Search

\nResearch highlightsThe study examines the impact of zinc ions on energy storage in solvothermal-synthesised graphene-zinc oxide nanocomposites. In recent years, there has been extensive research focus on graphene and metal oxides, particularly in heterostructures and composites. These materials have a broad range of applications, like energy storage. Faradaic processes were shown by the observation of redox peaks in the CV analysis of a three-electrode system. The estimated specific capacitances of graphene at scan rates of (1, 50, and 100) mVS−1 were (1250, 562.5, and 390.6) Fg−1. The G-ZnO (2 w%) and G-ZnO (3 w%) gave the specific capacitance of (1354, 750, and 520) Fg−1 and (1422, 818, and 568) Fg−1 at the same scan rates of 1, 50, and 100 mV/s. Applying a potential to the material reveals its pseudo-capacitive properties. The XRD results for G-ZnO (2 w%) and G-ZnO (3 w%) show diffraction peaks at 2θ = 20.56°, 32.95°, 40.69°, 47.41°, 59.02°, and 69.04°, which correspond to the diffraction planes 011, 100, 101, 102, 110, and 200, respectively. The study examines the impact of zinc ions on energy storage in solvothermal-synthesised graphene-zinc oxide nanocomposites.Faradaic processes were confirmed by the observation of redox peaks in the CV analysis of a three-electrode system.The estimation of specific capacitances of graphene was carried out at scan rates of (1, 50, and 100) mVS−1, and it yielded values of (1250, 562.5, and 390.6) Fg−1.The study examines the impact of zinc ions on energy storage in solvothermal-synthesised graphene-zinc oxide nanocomposites.Faradaic processes were confirmed by the observation of redox peaks in the CV analysis of a three-electrode system.The estimation of specific capacitances of graphene was carried out at scan rates of (1, 50, and 100) mVS−1, and it yielded values of (1250, 562.5, and 390.6) Fg−1. [ABSTRACT FROM AUTHOR]

Benefiting from high safety, low cost, and competitive energy density, aqueous zinc ion batteries (AZIBs) have emerged as very promising technology for grid energy storage. However, the lifetime of AZIBs is severely affected by uncontrolled zinc dendritic growth and undesirable side reaction. To address the problem, natural aluminum silicate hydroxide covered glass fibers separator (AlSi‐GF) is prepared herein using a simple spraying method. Aluminum silicate hydroxide is a complex oxide, where a large number of adsorption sites can adsorb Zn2+ and guide its deposition process. In particular, the Maxwell–Wagner polarization of aluminum silicate hydroxide under an applied electric field contributes to homogenizing the electric field distribution around the interface, thereby modulating zinc deposition and reducing the nucleation overpotential. Impressively, AlSi‐GF separator enables high‐performance zinc‐metal batteries. The symmetric battery with AlSi‐GF separator has a stable voltage polarization and an ultra‐long cycle life of 2280 h at a current density of 1 mA cm−2, and the Zn//V2O5 full cell based on AlSi‐GF separator can exhibit a high specific capacity of 123 mAh g−1 after 1500 cycles at 1 A g−1. This study provides new insights into the design of reliable and cost‐effective separators for metal anodes in energy storage devices. [ABSTRACT FROM AUTHOR]

The document is a contents list for the journal Chemical Society Reviews. It highlights various articles and reviews that have been published in the journal, covering topics such as colorimetric sensing, zinc-ion dehydration strategies, metal nanowire-based transparent electrodes, sodium layered oxide cathodes, one-pot chemo- and photo-enzymatic cascade processes, functionalized 2D membranes for separations, nucleic acid-based wearable and implantable electrochemical sensors, and catalytic asymmetric synthesis of 1,2-diamines. The journal aims to connect the world with the chemical sciences and reinvest its profits back into the chemistry community. [Extracted from the article]

Aqueous Zn–metal batteries have attracted increasing interest for large-scale energy storage owing to their outstanding merits in terms of safety, cost and production. However, they constantly suffer from inadequate energy density and poor cycling stability due to the presence of zinc ions in the fully hydrated solvation state. Thus, designing the dehydrated solvation structure of zinc ions can effectively address the current drawbacks of aqueous Zn–metal batteries. In this case, considering the lack of studies focused on strategies for the dehydration of zinc ions, herein, we present a systematic and comprehensive review to deepen the understanding of zinc-ion solvation regulation. Two fundamental design principles of component regulation and pre-desolvation are summarized in terms of solvation environment formation and interfacial desolvation behavior. Subsequently, specific strategy based distinct principles are carefully discussed, including preparation methods, working mechanisms, analysis approaches and performance improvements. Finally, we present a general summary of the issues addressed using zinc-ion dehydration strategies, and four critical aspects to promote zinc-ion solvation regulation are presented as an outlook, involving updating (de)solvation theories, revealing interfacial evolution, enhancing analysis techniques and developing functional materials. We believe that this review will not only stimulate more creativity in optimizing aqueous electrolytes but also provide valuable insights into designing other battery systems. [ABSTRACT FROM AUTHOR]

Periodontitis involves hyperactivated stromal cells that recruit immune cells, exacerbating inflammation. This study presents an ATP-responsive metal–organic framework (Mg/Zn-MOF) designed for periodontitis treatment, utilizing ion interference to modulate immune responses and prevent tissue destruction. Addressing the challenges of synergistic ion effects and targeted delivery faced by traditional immunomodulatory nanomaterials, the Mg/Zn-MOF system is activated by extracellular ATP—a pivotal molecule in periodontitis pathology—ensuring targeted ion release. Magnesium and zinc ions released from the framework synergistically inhibit membrane pore formation by attenuating Gasdermin D (GSDMD) expression and activation. This action curtails pyroptosis, lactate dehydrogenase and IL-1β release, thwarting the onset of inflammatory cascades. Mechanistically, Mg/Zn-MOF intervenes in both the NLRP3/Caspase-1/GSDMD and Caspase-11/GSDMD pathways to mitigate pyroptosis. In vivo assessments confirm its effectiveness in diminishing inflammatory cell infiltration and preserving collagen integrity, thereby safeguarding against periodontal tissue damage and bone loss. This investigation highlights the promise of ion-interference strategies in periodontitis immunotherapy, representing a significant stride in developing targeted therapeutic approaches. [ABSTRACT FROM AUTHOR]

Natural rubber (NR) is a complex material that is often discarded due to its three-dimensional structure. Recycling of rubber is difficult due to its complex structure, and only 1.7 million tonnes of waste, such as tyres and gloves, are considered recyclable. This study aims to develop self-healing rubber, which allows a product to recover without affecting structural reliability. Commercial NR was ionically crosslinked with zinc thiolate, forming an ionic crosslink network between rubber chains and zinc thiolate ions. The ionic crosslinks allow the rearrangement of rubber molecular chains under external heat, providing self-healing capabilities. The highest ionic crosslink density was found in NR with 35 phr zinc thiolate. The self-healing NR can recover 90 % of its initial properties at room temperature for 10 min and can be reprocessed and recycled three times without compromising its properties. It also shows excellent weldability, making it a promising material for repairing existing rubber products in heavy engineering applications. [ABSTRACT FROM AUTHOR]

A new quinoline‐based COF (covalent organic framework), obtained by Povarov reaction, containing 2,6‐diisopropylphenyl moieties as substituents over the heterocyclic ring is described for detecting Zn2+ in aqueous solution. The introduction of the mentioned bulky phenyl rings into the network favors an increase of the distance between the reticular sheets and their arrangement, obtaining a new material with an alternating AB type stacking. The new material exhibits good selectivity to detect Zn2+ by fluorescence emission in aqueous solutions up to a concentration of 1.2 × 10−4 m of the metal ion. In order to have a deeper insight into the interaction between the COF and the zinc cation, a thorough spectroscopical, microscopical, and theoretical study is also presented and discussed in this communication. [ABSTRACT FROM AUTHOR]

In recent years, aqueous zinc-ion batteries (AZIBs) have been rapidly developed and are favored by the public as a future large-scale energy storage system. Manganese-based compounds with multiple valence states and high electrochemical activity have been extensively investigated as cathodes for AZIBs due to their abundant reserves and high theoretical capacity. However, some problems hinder their application in AZIBs, such as low conductivity and sluggish kinetics. Defect engineering has been verified as an effective method to alleviate the above limitations. In this work, manganese oxide with oxygen defects (Od-MnO2) was successfully constructed and characterized by XRD, SEM, XPS, and TEM. Surface oxygen defects increase ion active transfer sites and improve electronic conductivity. Compared with MnO2, Od-MnO2 produced more localized electrons which could improve the electrochemical performance as cathodes for AZIBs. The discharge specific capacity of Od-MnO2 reaches 307.9 mAh g−1 in the first cycle at a current density of 0.1 A g−1 and maintains at 100.5 mAh g−1 at a current density of 10.0 A g−1. After 1000 cycles, the discharge specific capacity can still reach 82.5 mAh g−1 and the capacity retention rate is 82.1%. [ABSTRACT FROM AUTHOR]

Manganese dioxide has been significantly utilized in zinc ion batteries (ZIBs). However, in the rechargeable battery system, the manganese dioxide cathode suffers from poor conductivity, volume expansion, and substance dissolution, resulting in low capacity and poor stability. Herein, a 3D frame structure MnO2@CNTs cathode is proposed. In this system, the electrodeposited spherical MnO2 is anchored and interlinked via the in‐situ growth carbon nanotubes (CNTs) onto the carbon cloth. Benefiting the unique 3D frame structure, the MnO2 structure crush problem and the pathway of the electrons and ions are dramatically improved. The optimized MnO2@CNTs cathode demonstrate a high capacity of 256.35 mAh g−1 at 0.1 A g−1 and exceptional cycling stability. Furthermore, in‐situ Raman spectroscopy elucidates the energy storage mechanism of aqueous ZIBs (AZIBs). Moreover, COMSOL finite elements analysis demonstrates that the petal edge‐rich nanostructures of MnO2@CNTs generate a localized high electric field under constant current, accelerating ion/electron transfer. This work explains the rationale for CNTs to improve the properties of MnO2 cathodes, providing a new perspective for the design of high‐performance batteries. [ABSTRACT FROM AUTHOR]

Simple Summary: Numerous genetic mutations have been documented in HCC, and associated with clinical characters. Herein, we demonstrated that XIRP2 mutation is one of the high-frequency mutations in HCC, and is associated with poor prognosis and drug resistance. The presence of the XIRP2 mutation leads to enhanced stability of the XIRP2 protein, whereas its depletion significantly heightens sensitivity to oxaliplatin by inducing an excessive influx of zinc and calcium ions. XIRP2 mutation holds potential as a prognostic biomarker and that targeting the XIRP2 protein may offer therapeutic benefits in the management of HCC. Hepatocellular carcinoma (HCC) is a prevalent malignant digestive tumor. Numerous genetic mutations have been documented in HCC, yet the clinical significance of these mutations remains largely unexplored. The objective of this study is to ascertain the clinical value and biological effects of xin actin binding repeat containing 2 (XIRP2) mutation in HCC. The gene mutation landscape of HCC was examined using data from the Cancer Genome Atlas and the International Cancer Genome Consortium databases. The prognostic significance of the XIRP2 mutation was assessed through KM plot analysis. The association between drug sensitivity and the XIRP2 mutation was investigated using the TIDE algorithm and CCK-8 experiments. The biological effects of the XIRP2 mutation were evaluated through qRT-PCR, protein stability experiments, and relevant biological experiments. The XIRP2 mutation is one of the high-frequency mutations in HCC, and is associated with poor prognosis. A total of 72 differentially expressed genes (DEGs) were observed in HCC tissues with the XIRP2 mutation as compared to those with the XIRP2 wildtype, and these DEGs were closely related to ion metabolic processes. The XIRP2 mutation was linked to alterations in the sensitivity of fludarabine, oxaliplatin, WEHI-539, and LCL-161. CCK-8 assays demonstrated that HCC cells carrying the XIRP2 mutation exhibited increased resistance to fludarabine and oxaliplatin, but enhanced sensitivity to WEHI-539 and LCL-161 as compared with those HCC cells with the XIRP2 wildtype. The XIRP2 mutation was found to have no impact on the mRNA levels of XIRP2 in tissues and cells, but it did enhance the stability of the XIRP2 protein. Mechanically, the inhibition of XIRP2 resulted in a significant increase in sensitivity to oxaliplatin through an elevation in zinc ions and a calcium ion overload. In conclusion, the XIRP2 mutation holds potential as a biomarker for predicting the prognosis and drug sensitivity of HCC and serves as a therapeutic target to enhance the efficacy of oxaliplatin. [ABSTRACT FROM AUTHOR]

Matrix metalloproteinases (MMPs) are endopeptidases, and their activity depends on calcium and zinc metal ions. These enzymes are expressed originally in zymogenic form, where the active site of proteins is closed by a prodomain which is removed during activation. A homeostatic balance of their activity is primarily regulated by a 'cysteine switch' located on a consensus sequence of the prodomain and natural endogenous inhibitors, called tissue inhibitors of metalloproteinases (TIMPs). Breakage of this homeostasis may lead to various pathological conditions, which may require further activation and/or inhibition of these enzymes to regenerate that balance. Here, we report four modulators, more specifically, three inhibitors (I1, I2 and I3), and one exogenous activator (L) of the active form of human collagenase MMP-1 (without prodomain). The results were confirmed by binding studies using fluorescence-based enzyme assays. [Display omitted] • Four exogenous modulators to active forms of MMPs are reported. • Three molecules are determined to be regular competitive inhibitors and one novel activator to MMPs. • The binding of one of the reported inhibitors became weaker towards MMP-1 in the presence of the reported activator. • Docking Studies indicate inhibitors bind within the active site pocket. • Allosteric pocket for binding of activator is determined closer to omega loop connecting α2 and α3 helices. [ABSTRACT FROM AUTHOR]

Carvacrol and thymol are broad-spectrum natural antimicrobial agents. To reduce their volatility and improve their antimicrobial performance, synergistic systems were prepared loading the active molecules in zinc-modified clays. Montmorillonite (MMT) and zeolite (ZEO) were modified with zinc ions (ZnMMT and ZnZEO), with well-known antimicrobial properties, and then with carvacrol or thymol, reaching the 26 ± 3% and 33 ± 2% w/w of loading, respectively. The resulting hybrid materials were characterized by FT-IR, XPS, XRD, TGA, and GC-MS to evaluate carvacrol/thymol release in simulating food matrices. Antimicrobial assays carried out using spoiler and pathogenic bacterial strains showed that the antimicrobial activity of both thymol and carvacrol was largely preserved once they were loaded into Zn-modified clays. However, MMT hybrids showed an antibacterial activity significantly higher than ZEO hybrids at 50 mg/mL of thymol and carvacrol. For this reason, deeper antimicrobial evaluations were carried out only for ZnMMT composites. ZnMMT loaded with thymol or carvacrol produced inhibition zones against most of the target strains, also at 3.12 mg/mL, while the positive controls represented by the single molecule thymol or carvacrol were not active. The hybrid materials can be useful for applications in which the antimicrobial activity of natural molecules need to be displayed over time as requested for the control of microbial pathogens and spoilage bacteria in different applications, such as active packaging, biomaterials, and medical devices. [ABSTRACT FROM AUTHOR]

[Display omitted] • Novel urchin-like (NH 4) 2 V 10 O 25 ·8H 2 O are synthesized by solvothermal method. • The enlarged interlayer spacing speeds up the Zn2+ insertion/extraction. • The interlayer pillaring facilitates rapid and stable zinc ion storage. • NH 4 + provides a flexible framework structure. • The urchin-like morphology maintains the structural stability during (dis)charging. The practical application of zinc ion batteries (ZIBs) can be facilitated by designing cathode materials with unique structures that can overcome the critical problems of slow reaction kinetics and large volume expansion associated with the intercalation reaction of divalent zinc ions. In this study, a novel urchin-like (NH 4) 2 V 10 O 25 ·8H 2 O assembled from nanorods was synthesized by a simple hydrothermal method, noted as U-NVO. The interlayer organic pillar of cetyltrimethylammonium cation (CTAB) has been intercalated between layers to regulate the interlayer microstructure and expand the interlayer spacing to 1.32 nm, which effectively increased the contact between the electrode and electrolyte interface and shortened the diffusion path of electrolyte ions. The interlayer pillars of structural H 2 O and NH 4 + provide a flexible framework structure and enhance the cohesion of the layered structure, which helps to maintain structural stability during the charging and discharging process, resulting in long-term durability. These unique properties result in the U-NVO cathodes demonstrating high specific capacity (401.7 mA h g−1 at 0.1 A g−1), excellent rate capability (99.6 % retention from 0.1 to 5 A g−1 and back to 0.1 A g−1), and long-term cycling performance (∼87.5 % capacity retention after 2600 cycles). These results offer valuable insights into the design of high-performance vanadium oxide cathode materials. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Molecular Science is the property of Journal of Molecular Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Vanadium oxide cathode materials with stable crystal structure and fast Zn2+ storage capabilities are extremely important to achieving outstanding electrochemical performance in aqueous zinc‐ion batteries. In this work, a one‐step hydrothermal method was used to manipulate the bimetallic ion intercalation into the interlayer of vanadium oxide. The pre‐intercalated Cu ions act as pillars to pin the vanadium oxide (V‐O) layers, establishing stabilized two‐dimensional channels for fast Zn2+ diffusion. The occupation of Mn ions between V‐O interlayer further expands the layer spacing and increases the concentration of oxygen defects (Od), which boosts the Zn2+ diffusion kinetics. As a result, as‐prepared Cu0.17Mn0.03V2O5−□·2.16H2O cathode shows outstanding Zn‐storage capabilities under room‐ and low‐temperature environments (e.g., 440.3 mAh g−1 at room temperature and 294.3 mAh g−1 at −60°C). Importantly, it shows a long cycling life and high capacity retention of 93.4% over 2500 cycles at 2 A g−1 at −60°C. Furthermore, the reversible intercalation chemistry mechanisms during discharging/charging processes were revealed via operando X‐ray powder diffraction and ex situ Raman characterizations. The strategy of a couple of 3d transition metal doping provides a solution for the development of superior room‐/low‐temperature vanadium‐based cathode materials. [ABSTRACT FROM AUTHOR]

In response to the problem of additive zinc concentrate consumption and inefficient reduction of ferric ion (Fe3+) in the acid-leaching solution of zinc hydrometallurgy when employing zinc sulfide concentrate, various parameters were examined. These included particle size, temperature, addition coefficient of the concentrate, and sulfuric acid concentration, all aimed at enhancing the rate of Fe3+ reduction. The results indicated that increasing the temperature from 80 to 120°C enhanced the Fe3+ reduction rate from 93.3 to 98%, reducing the time from 180 to 60 min. Furthermore, enlarging the particle size of the concentrate from below − 58/+ 48 μm to − 246/+ 150 μm, lowering the Fe3+ concentration in the reduction solution to < 0.5 g/L, and decreasing the addition coefficient from 1.8 to 1.5 further enhanced the reduction process. Additionally, employing a pressure process to increase the reduction temperature proved to be an effective strategy for enhancing the utilization rate of the zinc sulfide concentrates and the Fe3+ reduction rate, thereby reducing the amount of reduction residue and facilitating its subsequent treatment. [ABSTRACT FROM AUTHOR]

Phosphorus recovery is essential, especially from wastewater containing high levels of phosphorus from the semiconductor industries, food companies, and livestock. This study aims to determine how pH, Fe/P molar ratio, and Zn/P molar ratio affect the crystallization of ferrous phosphate. Response surface methodology—central composite design was utilized to optimize the recovery efficiency of ferrous phosphate in a fluidized bed crystallization reactor. The pH and Fe/P molar ratio were adjusted within the ranges of 3.8 to 9.6 and 0.58 to 3.40, respectively, for the fluidized bed crystallization. The Zn/P molar ratio parameter was set between 0.1 and 1.0 to evaluate the impact of zinc. Following optimization by response surface analysis, the phosphorus removal efficiency was nearly 100% at pH 7.3, Fe/P molar ratio of 2.5, and the phosphate crystal efficiency was 60.3% at pH 6.8, Fe/P molar ratio of 1.9. In addition, the study discovered that zinc ion would significantly reduce the efficiency of ferrous phosphate recovery during the crystallization process, with the maximum phosphate crystal efficiency declines to 47% at Zn/P molar ratio of 0.5. [ABSTRACT FROM AUTHOR]

Aqueous zinc ion batteries (AZIBs) are thought to be emerging energy storage systems due to their features with high safety, low cost, and eco‐friendliness. They possess potential applications in smart grids and wearable devices. However, it is still a challenge to design suitable cathode materials that matches well with anode. Herein, graphene oxide (GO) coated VO2 nanobelts are prepared through a facile hydrothermal route. The Zn//VO2@GO batteries deliver a specific capacity of 323 mA h g−1 at a current density of 0.1 A g−1. It maintains an 88% of capacity retention rate at 5 A g−1 after 1000 times cycling. Moreover, the assembled flexible cells demonstrate excellent mechanical stability under different folding conditions. [ABSTRACT FROM AUTHOR]

Artificial interfaces provide a comprehensive approach to controlling zinc dendrite and surface corrosion in zinc‐based aqueous batteries (ZABs). However, due to consistent volume changes during zinc plating/stripping, traditional interfacial layers cannot consistently adapt to the dendrite surface, resulting in uncontrolled dendrite growth and hydrogen evolution. Herein, dynamic covalent bonds exhibit the Janus effect towards zinc deposition at different current densities, presenting a holistic strategy for stabilizing zinc anode. The PBSC intelligent artificial interface consisting of dynamic B−O covalent bonds is developed on zinc anode to mitigate hydrogen evolution and restrict dendrite expansion. Owing to the reversible dynamic bonds, PBSC exhibits shape self‐adaptive characteristics at low current rates, which rearranges the network to accommodate volume changes during zinc plating/stripping, resisting hydrogen evolution. Moreover, the rapid association of B−O dynamic bonds enhances mechanical strength at dendrite tips, presenting a shear‐thickening effect and suppressing further dendrite growth at high current rates. Therefore, the assembled symmetrical battery with PBSC maintains a stable cycle of 4500 hours without significant performance degradation and the PBSC@Zn||V2O5 pouch cell demonstrates a specific capacity exceeding 170 mAh g−1. Overall, the intelligent interface with dynamic covalent bonds provides innovative approaches for zinc anode interfacial engineering and enhances cycling performance. [ABSTRACT FROM AUTHOR]

Practical aqueous zinc‐ion batteries require low‐cost thin zinc anodes with long‐term reversible stripping/depositing. However, thin zinc anodes encounter more severe issues than thick zinc, such as dendrites and uneven stripping, resulting in subpar performance and limited lifetimes. Here, this work proposes a three‐in‐one zinc anode obtained by a large‐scale two‐step method to address the above issues. In a three‐in‐one zinc anode, the copper foil as an inactive current collector solves the gradual reduction of the active area when only the pure zinc as an active current collector. This work develops an automatic electroplating device that can continuously deposit a zinc layer on a conducting foil to meet the demand for zinc‐coated copper foils. The sodium carboxymethylcellulose (CMC)‐zinc fluoride (ZnF2) protective layer prevents direct contact between zinc and separator, and provides a uniform and sufficient supply of zinc ions. The CMC‐ZnF2‐coated copper foil performs up to 3000 reversible zinc deposition/stripping cycles with a cumulative capacity of 6 Ah cm−2 and an average Coulombic efficiency of 99.94%. The Zn||ZnVO cell using the three‐in‐one anode achieved a high capacity retention of over 70% after 15 000 cycles. The proposed three‐in‐one anode and the automatic electroplating device will facilitate industrialization of practical thin zinc anodes. [ABSTRACT FROM AUTHOR]

Low‐temperature rechargeable aqueous zinc metal batteries (AZMBs) as highly promising candidates for energy storage are largely hindered by huge desolvation energy barriers and depressive Zn2+ migration kinetics. In this work, a superfast zincophilic ion conductor of layered zinc silicate nanosheet (LZS) is constructed on a metallic Zn surface, as an artificial layer and ion diffusion accelerator. The experimental and simulation results reveal the zincophilic ability and layer structure of LZS not only promote the desolvation kinetics of [Zn(H2O)6]2+ but also accelerate the Zn2+ transport kinetics across the anode/electrolyte interface, guiding uniform Zn deposition. Benefiting from these features, the LZS‐modified Zn anodes showcase long‐time stability (over 3300 h) and high Coulombic efficiency with ≈99.8% at 2 mA cm−2, respectively. Even reducing the environment temperature down to 0 °C, ultralong cycling stability up to 3600 h and a distinguished rate performance are realized. Consequently, the assembled Zn@LZS//V2O5‐x full cells deliver superior cyclic stability (344.5 mAh g−1 after 200 cycles at 1 A g−1) and rate capability (285.3 mAh g−1 at 10 A g−1) together with a low self‐discharge rate, highlighting the bright future of low‐temperature AZMBs. [ABSTRACT FROM AUTHOR]

Aqueous zinc‐ion batteries are promising for next‐generation energy storage systems. However, the zinc dendrite growth, corrosion, and hydrogen evolution reaction at the electrochemical interface severely impede their further development. Herein, a Zn2+‐rich and H2O‐poor Helmholtz plane is constructed to regulate the electrochemical interface between the zinc anode and the electrolyte. Electrochemical and in situ spectroscopy characterizations reveal that the designed electric double layer with abundant Zn2+ coordination sites and less H2O content can facilitate rapid electron transfer, homogenize Zn2+ deposition, and alleviate the side reactions induced by active H2O. Benefiting from the high reversibility and stability of zinc anode, the Zn||Zn symmetric cell can be cycled over 1000 h at 1 mA cm−2 and the Zn||NH4V4O10 full cell can maintain a capacity of 85.23% for 1000 cycles at 3 A g−1. This work aims at Helmholtz plane reconfiguration and provides a realizable strategy in interface construction for other similar systems. [ABSTRACT FROM AUTHOR]

Aqueous zinc ion batteries hold promise as alternative systems to lithium‐based batteries. However, practical development faces critical challenges due to parasitic side reactions and dendrite growth in zinc anodes. While introducing electrolyte additives is promising, monofunctional additives offer limited protection to the zinc anode from a single aspect. Herein, a disodium succinate additive is presented to establish a hydrophobic and zincophilic dual electric layer structure on the Zn surface, regulate the solvation structure of Zn2+, and act as a pH buffer during cycling. As a result, the symmetrical cell with an electrolyte containing 0.2 m SADS shows a durable life of over 2200 h, and the Zn||MnO2 full cell still maintains an 80% capacity retention after 1000 cycles. In addition, SADS both show wide applicability in the match with NVO and I2 cathode. This work provides a low‐cost and multifunctional electrolyte additive, facilitating the development of high‐performance aqueous zinc ion batteries. [ABSTRACT FROM AUTHOR]

The energy storage mechanism of MnO2 in aqueous zinc ion batteries (ZIBs) is investigated using four types of MnO2 with crystal phases corresponding to α‐, β‐, γ‐, and δ‐MnO2. Experimental and theoretical calculation results reveal that all MnO2 follow the H+ and Zn2+ co‐intercalation mechanism during discharge, with ZnMn2O4, MnOOH, and Zn4(SO4)(OH)6·4H2O being the main products. ZnMn2O4 is formed from Zn2+ intercalation, while MnOOH and Zn4(SO4)(OH)6·4H2O are formed from H+ intercalation. Charging generates MnO2 through the extraction of Zn2+ and H+ from ZnMn2O4 and MnOOH, indicating reversible reactions. The study also reveals that H+ intercalation exhibits better kinetics than Zn2+ intercalation due to its higher diffusion ability and easier charge transfer. The crystal structures and diffusion energy barriers differences are responsible for the differences of H+ and Zn2+ diffusion in MnO2, with the layered δ phase exhibiting the lowest diffusion energy barrier and highest apparent diffusion coefficient, while the α phase exhibits the highest diffusion energy barrier and lowest apparent diffusion coefficient. These findings highlight the importance of crystal phases in determining the diffusion ability and energy storage of MnO2, which can inform strategies for design of multiphase MnO2 cathodes for high‐performance ZIBs. [ABSTRACT FROM AUTHOR]

Surface side reactions and time‐consuming modification methods hinder the practical application of zinc‐ion batteries. This study introduces an ultrathin protection layer for the Zn anode via a rapid sputtering method. The dopants on the CN10@Zn anode create surface dipoles and local variations in charge distribution, facilitating zinc ion migration to pyrrolic nitrogen dopant sites with reduced adsorption barriers. Additionally, hydroxyl oxygen dopants enhance the hydrophilicity of the sputtering layer, forming a strong adhesion with the zinc anode and improving ion accessibility. This results in dense nucleation sites for uniform zinc deposition. Consequently, the sputtered layer achieves a Coulombic efficiency of 99.8% over 2,700 cycles in Cu||Zn cells and a lifespan of up to 2,100 h in zinc symmetric cells. When paired with Na0.65Mn2O4 cathodes, the sputtered layer retains 89% capacity over 1,000 cycles at 1 A g−1. This study presents a promising method for rapidly fabricating ultrathin electrode materials. [ABSTRACT FROM AUTHOR]

Regulating the electric double layer (EDL) structure of the zinc metal anode by using electrolyte additives is an efficient way to suppress interface side reactions and facilitate uniform zinc deposition. Nevertheless, there are no reports investigating the proactive design of EDL‐regulating additives before the start of experiments. Herein, a functional group assembly strategy is proposed to design electrolyte additives for modulating the EDL, thereby realizing a long‐lasting zinc metal anode. Specifically, by screening ten common functional groups, N, N‐dimethyl‐1H‐imidazole‐1‐sulfonamide (IS) is designed by assembling an imidazole group, characterized by its high adsorption capability on the zinc anode, and a sulfone group, which exhibits strong binding with Zn2+ ions. Benefiting from the adsorption functionalization of the imidazole group, the IS molecules occupy the position of H2O in the inner Helmholtz layer of the EDL, forming a molecular protective layer to inhibit H2O‐induced side reactions. Meanwhile, the sulfone group in IS, acting as a binding site to Zn2+, promotes the de‐solvation of Zn2+ ions, facilitating compact zinc deposition. Consequently, the utilization of IS significantly extending the cycling stability of Zn||Zn and Zn||NaV3O8 ⋅ 1.5H2O full cell. This study offers an innovative approach to the design of EDL regulators for high‐performance zinc metal batteries. [ABSTRACT FROM AUTHOR]

A separator modification strategy was proposed by placing nitrogen-doped carbon fibers (NCF700) in the middle of the separator to prevent direct contact between the coating and the rigid zinc metal anode, resulting in coating cracks. The NCF700 coating can homogenize the electric field distribution and increase the transference number of zinc ions. Therefore, the battery assembled with the NCF700 coated separator exhibits superior cycling stability compared to the bare separator. [ABSTRACT FROM AUTHOR]

In this work, a SiO2 doped polyvinyl alcohol/polyethylene glycol (PVA/PEG) gel polymer electrolyte (PVA/PEG-SiO2) was constructed via an ice-crystal template for zinc-ion batteries. The SiO2 and the three-dimensional porous skeleton make it have excellent ionic conductivity and mechanical strength, and inhibit the growth of dendrites. The assembled ZIBs exhibit excellent rate performance and cycle stability, making it a promising electrolyte membrane candidate for flexible wearable electronics. [ABSTRACT FROM AUTHOR]

Carbon nanotubes (CNTs) have been used to prepare drug nanocarriers. Zinc (Zn) ions play a crucial role in biological processes. Polyethylene glycol (PEG) is a biopolymer used in the medical field. In this work, the synthesis of ion Zn-ion-functionalized CNTs/PEG nanocomposites is described. The prepared nanocomposites were characterized using the FE-SEM, FT-IR, XPS, and DSC techniques. The ability of the prepared nanocomposites to release the anticancer drug cisplatin (CP) was assessed. The cytotoxicity of the studied nanocomposites loaded or unloaded with CP toward HeLa cells was evaluated, and their capacity to inhibit the growth of the bacteria Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa was determined. The cytotoxicity tests show that HeLa cells showed considerably larger decrease in cell viability owing to exposure to CP compared to that owing to exposure to Zn-ion-functionalized CNTs/PEG nanocomposites. [ABSTRACT FROM AUTHOR]

Aqueous zinc ion batteries (ZIBs) are currently gaining a significant amount of attention as a low‐cost and high safety energy storage option. While mostly inorganic structures are used as cathode materials in aqueous zinc batteries, these materials undergo structural degradation, therefore, alternative organic cathodes are expected to be developed to replace inorganic materials in aqueous zinc ion batteries (AZIBs). In this work, pillar[5]quinone (P5Q) is used as a cathode in AZIBs for the first time. Besides investigating the charge storage mechanism and interfacial property evolution of P5Q by various ex situ analyses, electrochemical quartz crystal microbalance (EQCM) and density functional theory (DFT) demonstrates both Zn2+ and H+ incorporation. The P5Q exhibits >99 % Coulombic efficiency through 10000 cycles at ultra‐fast (500 °C) current density, yielding a capacity value of approximately 120 mAh g−1 at the end of the cycle. When the current density is changed from 500 °C to 120 °C, an initial discharge capacity of approximately 182 mAh g−1 is achieved, demonstrating outstanding performance with over 80 % capacity retention for the subsequent 7000 cycles. [ABSTRACT FROM AUTHOR]

Cadmium (Cd) and zinc (Zn) in seawater enter the human body through the food chain. Combined toxicity tests indicated that high concentrations of Cd(II) and low concentrations of Zn(II) had a synergistic effect on humans. Thus, there is an urgent need to prepare a sensor for rapid and simultaneous detection of Cd(II) and Zn(II) in seawater. Herein, a reduced graphene oxide/carboxylated multi-walled carbon nanotube (rGO/MWCNT-COOH)-modified glassy carbon electrode was prepared in the experiments using the dropping method. The synthesis of various materials achieved the purpose of expanding the surface area, and scanning electron microscopy was used to observe the structure of the composite membrane. Moreover, the large number of functional groups on the surface of the composite membrane can also increase the adsorption of ions. For the determination of trace cadmium (II) and zinc (II) in seawater, the method used was differential pulse voltammetry (DPV). The results show that the peak current, which was obtained in the range of 5–400 μg/L for Cd(II) and Zn(II), has a linear relationship with concentration, corresponding to the detection limits of 0.8 μg/L for Cd(II) and 0.98 μg/L for Zn(II). The modified electrode was used to determine the Cd(II) and Zn(II) content in the coastal seawater of the Maowei Sea, and the recovery rate was between 95.8 and 98.2% for Cd(II) and 96.7~99.4% for Zn(II), which provided a novel approach of detection to define trace Cd(II) and Zn(II) in seawater. [ABSTRACT FROM AUTHOR]

Developing vanadium-based cathode materials with high-capacity and long-term stability for aqueous zinc ion batteries still remains challenging. Herein, novel hierarchical durian-shaped vanadium trioxide@carbon (V2O3@C) hollow microspheres were prepared using a hydrothermal-carbonization strategy. In situ electrochemically induced phase conversion from V2O3@C to Zn3(OH)2(V2O7)·(H2O)2@C was confirmed during the first charging process via in situ and ex situ characterization techniques. The obtained Zn3(OH)2(V2O7)·(H2O)2@C cathode delivers reversible zinc de-intercalation/intercalation and exhibits a high reversible capacity of 562 mA h g−1 at 0.1 A g−1, superior rate performance and long cycle stability (191.4 mA h g−1 is maintained even after 2000 cycles at 10 A g−1). This strategy provides a promising approach to the development of high-performance storage zinc cathode materials. [ABSTRACT FROM AUTHOR]

Prussian blue analogs (PBAs) featuring with 3D open framework are recognized as promising cathode candidates for Zinc‐ion batteries (ZIBs). However, challenges such as unsatisfactory active site utilization, low conductivity, and abundant structural vacancies have impeded fulfillment of their potential. In this work, a conductive in‐plane porous MXene is for the first time adopted as a multifunctional host material to enhance cobalt hexacyanoferrate (CoHCF) growth and crystallinity. Particularly, the uniform surface charges on MXene are identified to induce anisotropic and highly crystalline CoHCF, which are critical to alleviating the practical drawbacks associated with the PBAs family. Empowered by the targeted modification, the CoHCF nanotube/MXene composite realizes high surface area and low defectiveness, resulting in an impressive capacity of 197 mAh g−1 at 0.1 A g−1 and capacity retention of 95.3% over 3000 cycles at 2.0 A g−1. X‐ray spectroscopy and density functional theory (DFT) reveal that Co─C bonds in the heterostructure facilitate rapid electron/Zn‐ion transfer, enhancing Zn storage kinetics. To validate practical applicability, pouch cells incorporating Zn|CoHCF/MXene are further examined. This composition strategy, utilizing MXene as a multifunctional template, enhances the surface area, conductivity, and crystallinity of PBAs as cathodes for ZIBs, showcasing the significant potential for large‐scale energy storage applications. [ABSTRACT FROM AUTHOR]

Zinc ion batteries (ZIBs) have emerged as promising candidates for renewable energy storage owing to their affordability, safety, and sustainability. However, issues with Zn metal anodes, such as dendrite growth, hydrogen evolution reaction (HER), and corrosion, significantly hinder the practical application of ZIBs. To address these issues, organic solid electrolyte interface (SEI) layers have gained traction in the ZIB community as they can, for instance, help achieve uniform Zn plating/stripping and suppress side reactions. This article summarizes recent advances in organic artificial SEI layers for ZIB anodes, including their fabrication methods, electrochemical performance, and degradation suppression mechanisms. [ABSTRACT FROM AUTHOR]

Mn‐based oxides promise high energy density and low toxicity cathodes for aqueous zinc‐ion batteries (ZIBs) but suffer from complex irreversible phase transitions, accompanied by continuous disproportionation reactions and manganese dissolution. Tailor‐made reversible and robust crystal structure in Mn‐based material is crucial and challenging. Here a controllable electrochemical oxidation induced crystal transition strategy is developed for the transformation of cubic α‐Mn2O3 into amorphous Zn0.17MnO2−n·0.52H2O, which serves as the host of Zn2+, empowering more highly accessible built‐in zincophilic sites whilst alleviating the lattice repulsion of Zn2+ (de)intercalation. As confirmed by crystal structure evolution characterizations and theoretical simulations, the amorphous Zn0.17MnO2−n·0.52H2O with excellent electronic properties and low zinc‐ion migration barrier can be reversibly converted into ZnMn3O7·3H2O. This stabilized dynamic electrochemical crystal transition equilibrium contributes ultrahigh capacity (558 mAh g−1), high‐energy density (696 Wh kg−1@6 kW kg−1), and superior stability (5000 cycles). The approach can also extend to Mn3O4 and α‐MnO2, opening new insights into electrochemical oxidation induced crystal conversion to build highly reversible and durable ZIBs. [ABSTRACT FROM AUTHOR]

A major bottleneck limiting the commercialization of aqueous zinc ion batteries (AZIBs) is dendrite formation on the zinc (Zn) anode during the plating/stripping process, which leads to rapid deterioration in performance and, consequently to the device failure. In this regard, researchers are trying to design more stable anodes toward suppressing dendrite formation. One possible solution to tackle this problem and to extend the cycling life of AZIBs is to modify the zinc anode surface by coating carbonaceous materials, enabling more controlled charge flux and uniform ion distribution. This work reports sustainable and bio‐derived polylactic acid (PLA) as a coating layer on the zinc anode. Carbonizing this polymer under ambient conditions using a high‐power nanosecond laser forms a carbon‐coated zinc foil, which was directly utilized as the anode in aqueous zinc ion batteries. The fabricated laser‐processed PLA‐derived carbon‐coated zinc anode demonstrated an extended cycling life of almost 1600 hours, significantly outperforming the bare zinc anode. A full aqueous zinc ion battery assembled from as‐modified anode and as‐prepared V2O5 nanofibers as cathode was able to deliver a specific capacity of 238 mAh g−1 at 1.0 A g−1 with a capacity retention of 70 % after 1000 cycles. [ABSTRACT FROM AUTHOR]

A novel metal–organic framework based on octa-nuclear zinc clusters, namely [Zn4(L)(OH)2(H2O)4] (Zn-MOF) (H6L = hexakis(4-carboxylatophenoxy)cyclotriphosphazene), has been synthesized and structurally characterized by a solvothermal method. Single-crystal X-ray diffraction shows that eight zinc ions form a linear octa-nuclear cluster via a μ3-OH group, and each hexakis(4-carboxylatophenoxy)-cyclotriphosphazene connects four octa-nuclear clusters to construct 3D frameworks with one-dimensional pore structures. Zn-MOF exhibits suitable fluorescence properties, water stability as well as thermal stability, and can be applied as a convenient fluorescent probe for the detection of radioactive uranyl cations (UO22+) and ferric ions (Fe3+) through fluorescence quenching behavior. The corresponding Ksv values can reach 7.44 × 103 M−1 and 1.49 × 104 M−1. Meanwhile, the theoretical calculations fully indicated that the introduction of UO22+ effectively inhibited the metal-to-ligand charge transfer (MLCT) of Zn-MOF, which in turn led to the fluorescence quenching phenomenon. Therefore, Zn-MOF prepared using crystal engineering can be used to construct an efficient and reliable fluorescent probe used in the fields of environmental monitoring and nuclear waste treatment. [ABSTRACT FROM AUTHOR]

A dual-additive-based aqueous electrolyte was designed with a pH-buffering additive (Zn(OAc)2) and an electrostatic shielding additive (TMAOAc) for high Zn plating/stripping efficiency. The buffering pair, OAc−/HOAc, can stabilize the pH value to suppress side hydrogen evolution reactions. Meanwhile, TMA+ acts as a competitive cation being preferentially adsorbed on the uneven surface of the Zn anode and exerts an electrostatic shielding effect to facilitate flat Zn deposition. Such a dual-additive-based electrolyte promotes an ultra-high Zn plating/stripping efficiency of 99.9% at 1 mA cm−2 and long-term cycling stability for 3600 h at 0.5 mA cm−2, offering valuable insights for advanced aqueous batteries. [ABSTRACT FROM AUTHOR]

A photorechargeable supercapacitor was constructed using vanadium pentoxide (V2O5), reduced graphene oxide hydrogel (rGH), and zinc trifluoromethanesulfonate (Zn(CF3SO3)2) as the photoanode, cathode, and electrolyte, respectively. The phase composition, microstructure, chemical structure, light absorption, and specific surface area of the synthesized products and the electrochemical performance of the rGH/V2O5 supercapacitor were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, UV-Vis spectroscopy, the Brunauer–Emmett–Teller (BET) method, and an electrochemical workstation, respectively. The results show that the device has a specific capacity of 164 F g−1 at 0.5 A g−1 under illumination with 95 mW cm−2 light intensity, which is 20.5% higher than that under normal electrical charging. The supercapacitor has a 75% capacity retention rate and 100% coulombic efficiency, respectively, after 10 000 testing cycles under photoelectric synergistic charging and discharging. The as-constructed rGH/V2O5 photorechargeable supercapacitor exhibits promising application potential in electric vehicles and wearable electronics. [ABSTRACT FROM AUTHOR]

Emerging energy storage devices are vital approaches towards peak carbon dioxide emissions. Zinc-ion energy storage devices (ZESDs), including zinc ion capacitors and zinc ion batteries, are being intensely pursued due to their abundant resources, economic effectiveness, high safety, and environmental friendliness. Carbon materials play their important role in the development of ZESDs, from cathode, electrolyte, to metallic Zn anode. Though thrilling development has been achieved in ZESDs, they still face the challenges of unsatisfactory capacity and kinetics for cathode, and irreversibility and low utilization rate of Zn anode. Hence, the roles of carbon materials in ZESDs are systematically discussed, starting with investigating carbons with different dimensions as cathodes and the corresponding strategies to improve their performance. Also, carbons as coatings or skeletons for other types of cathode materials are introduced. Besides, the functions of carbons in electrolyte development are explored. Further, the influence of carbon materials on Zn anode is elucidated with the corresponding operational mechanisms. Finally, an outlook for carbon materials in ZESDs is provided. We envision the presented minireview can pay way on exploring novel carbon research towards next-generation energy storage technologies. Highlights: • Zinc-ion energy storage devices (ZESDs) are powerful rechargeable alternatives towards sustainability. • Carbon materials play vital roles on addressing the critical challenges in ZESDs. • Incorporation of redox-active entities serve as a mainstream to enhance the performance of carbon nanostructures for cathodes in ZESDs. • Carbons with high chemical stability are imperative to explore new charge storage mechanism in ZESDs. • Reversibility of metallic Zn anode can be greatly improved by novel carbon coatings or hosts. [ABSTRACT FROM AUTHOR]

Aqueous zinc ion batteries coupling with conventional hydrogel electrolyte have the advantages of high safety, low cost, and simple manufacturing process while they are difficult for fast charging/discharging application scenarios due to the sluggish kinetics. Herein, a new strategy is developed for synthesizing a highly‐entangled polyacrylamide (HE‐PAM) hydrogel electrolyte to dramatically enhance the ion transportation and mechanical stability. The developed hydrogel electrolyte has lower ionic resistance and a strong elastic modulus. After being assembled into Zn/MnO2 batteries, the HE‐PAM hydrogel electrolyte exhibits excellent cycling stability and high‐rate capability under high current densities. Specifically, the Zn//HE‐PAM//MnO2 battery can resist the highest current of 35 A g−1, which outperforms previously reported works. Moreover, the HE‐PAM hydrogel electrolyte can also support the fast charging/discharging in proton ion batteries with a high capacity retention rate of 50% under 50 A g−1. This progress on hydrogel electrolytes can boost the development of quasi‐solid‐state batteries in the fast charging/discharging aspect. [ABSTRACT FROM AUTHOR]

Vanadium‐based oxides are promising candidates for use in aqueous zinc‐ion batteries owing to their open framework structure that facilitates rapid Zn2+ deintercalation. To improve the kinetics, a two‐dimensional nanoribbon‐shaped W‐VO2 cathode material was developed by pre‐embedding tungsten atoms into VO2(B) using a one‐step hydrothermal method. The large interlayer spacing in the W‐VO2 nanosheets aided in the deintercalation of hydrated Zn2+ ions. The 1 % W‐doped electrode exhibited stable cycling, reaching a high capacity of 365.8 mAh g−1 at 0.3 A g−1, with a 92.6 % capacity retention (338.8 mAh g−1) after 200 cycles. Impressively, 84.3 % of the capacity is retained after 1200 cycles at 1 A g−1. The zinc storage mechanism of W‐VO2 was elucidated through in situ X‐ray diffraction and X‐ray photoelectron spectroscopy, highlighting the benefits of tungsten doping on tunnel structure stability and Zn2+ deintercalation reversibility in VO2 electrodes. [ABSTRACT FROM AUTHOR]

Aqueous zinc‐ion batteries (AZIBs) based on vanadium oxides or sulfides are promising candidates for large‐scale rechargeable energy storage due to their ease of fabrication, low cost, and high safety. However, the commercial application of vanadium‐based electrode materials has been hindered by challenging problems such as poor cyclability and low‐rate performance. To this regard, sophisticated nanostructure engineering technology is used to adeptly incorporate VS2 nanosheets into the MXene interlayers to create a stable 2D heterogeneous layered structure. The MXene nanosheets exhibit stable interactions with VS2 nanosheets, while intercalation between nanosheets effectively increases the interlayer spacing, further enhancing their stability in AZIBs. Benefiting from the heterogeneous layered structure with high conductivity, excellent electron/ion transport, and abundant reactive sites, the free‐standing VS2/Ti3C2Tz composite film can be used as both the cathode and the anode of AZIBs. Specifically, the VS2/Ti3C2Tz cathode presents a high specific capacity of 285 mAh g−1 at 0.2 A g−1. Furthermore, the flexible Zn‐metal free in‐plane VS2/Ti3C2Tz//MnO2/CNT AZIBs deliver high operation voltage (2.0 V) and impressive long‐term cycling stability (with a capacity retention of 97% after 5000 cycles) which outperforms almost all reported Vanadium‐based electrodes for AZIBs. The effective modulation of the material structure through nanocomposite engineering effectively enhances the stability of VS2, which shows great potential in Zn2+ storage. This work will hasten and stimulate further development of such composite material in the direction of energy storage. [ABSTRACT FROM AUTHOR]

Aqueous zinc‐ion batteries (ZIBs) hold significant promise for large‐scale energy storage. While considerable strides have been made in modifying separators, the challenge of developing dendrite‐free, corrosion‐resistant, and cost‐effective separators for achieving extended cycling performance of Zn anodes persists. In light of this, a TiO2 coating separator to mitigate interfacial corrosion and passivation reactions, thereby facilitating high‐performance ZIBs is designed. This study delves into the influence of the loading amount and crystal phase of the TiO2 coating layers on separator modification. Zn symmetric cells employing the anatase TiO2‐modified glass fiber (A‐TiO2@GF) separator demonstrate superior Zn2+ ion transport kinetics in a mild ZnSO4 electrolyte, ensuring sustained long‐term stability and uniform Zn deposition. Furthermore, the reduced hydrogen evolution reaction (HER) activity of A‐TiO2 coatings curbs H+ ion migration, minimizing interfacial corrosion and HER. Consequently, the assembled Zn||CaV8O20 zinc‐ion full cells demonstrate outstanding long‐term durability and impressive specific capacity, boasting a discharge capacity of 142 mAh g−1 after 1000 cycles. This work introduces a straightforward interface engineering strategy for creating efficient separators in zinc‐ion batteries, promoting uniform Zn deposition. [ABSTRACT FROM AUTHOR]

We assigned the side-chain resonances of the Crimean–Congo hemorrhagic fever virus (CCHFV) glycoprotein n (Gn) cytosolic domain that is 69 amino acids long to complete the backbone resonances previously published by Estrada et al. (2011). The process was facilitated by three factors. First, sample preparation using cell-free protein synthesis (CFPS) was completed in less than 2 d and allowed for correct zinc finger formation by adding zinc ions to the reaction. Second, access to NMR platforms with standardized pulse sequences allowed for data acquisition in 18 d. Third, data analysis using the online platform NMRtist allowed sequential resonance assignments to be made in a day, and assignments were verified and finalized in less than a week. Our work thus provides an example of how NMR assignments, including side chains, of small and well-behaved proteins can be approached in a rapid routine, at protein concentrations of 150 µ M. [ABSTRACT FROM AUTHOR]

This thesis addresses the problem of grain growth preferential orientation in the preparation of zinc powder by electrolytic method, and selects new additives to study the effect of preferential orientation on the deposition process. Tetra-n-butylammonium chloride (TABCl) was used as the research object, and electrochemical analysis and DFT theoretical calculations were used to deduce the zinc deposition mechanism, and the crystal orientation, particle size distribution and microscopic morphology were characterized by means of SEM, XRD and particle size analysis. At a current density of 600 A/m², a temperature of 25 ℃, and an alkaline solution with a zinc concentration of 20 g/L, transient nucleation takes the reins of the zinc powder nucleation process, the adsorption energies of Zn(NH3)42+ on the (101) and (002) surfaces stand at -3.56 eV and -1.84 eV, respectively. These values tip the scale in favor of selective orientation along the (101) surface. The introduction of TABCl introduces a significant shift in the zinc deposition process. Aiding cathodic polarization, this additive exhibits a higher adsorption energy on the (101) surface. Its presence effectively isolates zinc adsorption on the (101) surface, yielding remarkable results. When the additive concentration reaches 20 mg/L, it ushers in the production of flaky zinc powders boasting a particle size of 32.44 μm and a remarkable texture coefficient of 66.73% on the (002) surface. This achievement holds substantial promise, particularly in the context of zinc ion batteries, where it offers a potential solution to the vexing problem of zinc dendrite formation. [ABSTRACT FROM AUTHOR]

Aqueous zinc‐ion batteries (AZIBs), recognized for their safety and environmental friendliness, hold significant promise for large‐scale energy storage. However, the rapid capacity degradation resulting from the dissolution of active cathode materials hampers the advancement of AZIBs. Here, Ru0.2V2O5∙0.41H2O (RuVO) is synthesized with remarkable capacity retention (98.2% over 5000 cycles at 10 A g−1). The pre‐intercalation of Ru3+ enhances the stability of both intrinsic and cycling structures, elevating the Gibbs free energy and suppressing V‐dissolution thermodynamically. Additionally, Ru3+ intercalation modulates the potential energy surface of Zn2+ migration, leading to the dominance of Zn2+ in the insertion/extraction mechanism, thereby kinetically impeding the dissolution reaction. This study elucidates the dissolution thermodynamics and kinetics of V‐based cathodes through a combination of experiments, mechanism analyses, and density functional theory (DFT) calculations. [ABSTRACT FROM AUTHOR]

Aqueous zinc‐ion batteries (AZIBs) attract attention due to their safety and high specific capacity. However, their practical applications are constrained by Zn anode corrosion, dendritic growth, and poor temperature adaptability induced by a strong hydrogen‐bond network in aqueous electrolytes. Herein, a universal strategy to design strong solvating electrolytes is proposed, in which the hydrogen‐bond network and solvation structures are reconstructed by regulating the dipolar‐dipolar and ion‐dipolar interactions simultaneously. Consequently, the hydrogen‐bond network in free water is largely weakened, and the water content in the Zn2+ solvated sheath is reduced, while the hydrogen‐bond network between solvents is strengthened, which effectively broadens the operating temperature range and suppresses Zn dendrites and corrosion. As a result, Zn anodes exhibit excellent platting/stripping efficiency with an average Coulombic Efficiency up to 99.89% after 2000 cycles at 0.5 mA cm−2, impressive cycling stability (5000 h, 0.5 mA cm−2/0.5 mA h cm−2), and a wide operating temperature range of 140 °C (−50–90 °C). Moreover, the Zn//V2O3 full cells also display enhanced temperature‐resistance, implying that the designed strong solvation electrolyte has practical application potential in extreme environments. This study suggests a promising strategy to design ideal electrolytes for high‐performance AZIBs with safety, ultralong cycling life, and satisfying temperature‐resistance. [ABSTRACT FROM AUTHOR]

Organic cathode materials for aqueous rechargeable zinc batteries (ARZBs) are rapidly gaining prominence, while the exploration of compounds with affordable synthesis, satisfactory electrochemical performance, and understandable mechanisms still remains challenging. In this study, 6,8,15,17‐tetraaza‐heptacene‐5,7,9,14,16,18‐hexaone (TAHQ) as an easily synthesized organic cathode material with novel quinone/pyrazine alternately conjugated molecule structure is presented. This organic electrode exhibits good capacity with highly reversible redox reactions, and the influence of multi‐active structures on the Zn2+/H+ loading behavior is systematically investigated by ex situ spectroscopy, electrochemical tests, and computation. Both experimental and theoretical studies effectively address the Zn2+/H+ intercalation/deintercalation kinetics. Benefitting from the fused active functionalities, the assembled Zn//TAHQ battery displays a maximum discharge specific capacity of 254.3 mAh g−1 at 0.5 A g−1, and it maintains remarkable cycle performance with 71% capacity retention after 1000 cycles under 5 A g−1. [ABSTRACT FROM AUTHOR]

Aqueous zinc ion batteries (AZIBs) show great potential in large‐scale energy storage systems. However, the inferior cycling life due to water‐induced parasitic reactions and uncontrollable dendrites growth impede their application. Electrolyte optimization via the use of additives is a promising strategy to enhance the stability of AZIBs. Nevertheless, the mechanism of optimal multifunctional additive strategy requires further exploration. Herein, sodium dodecyl benzene sulfonate (SDBS) is proposed as a dual‐functional additive in ZnSO4 electrolyte. Benefiting from the additive, both side reactions and zinc dendrites growth are significantly inhibited. Further, a synchrotron radiational spectroscopic study is employed to investigate SDB− adjusted electric double layer (EDL) near the Zn surface and the optimized solvation sheath of Zn2+. First‐principles calculations verify the firm adsorption of SDB−, and restriction of random diffusion of Zn2+ on the Zn surface. In particular, the SDBS additive endows Zn||Zn symmetric cells with a 1035 h ultra‐stable plating/stripping at 0.2 mA cm−2. This work not only provides a promising design strategy by dual‐functional electrolyte additives for high stable AZIBs, but also exhibits the prospect of synchrotron radiation spectroscopy analysis on surface EDL and Zn2+ solvation shell optimization. [ABSTRACT FROM AUTHOR]