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High electrochemical stability and safety make Na+ superionic conductor (NASICON)‐class cathodes highly desirable for Na‐ion batteries (SIBs). However, their practical capacity is limited, leading to low specific energy. Furthermore, the low electrical conductivity combined with a decline in capacity upon prolonged cycling (>1000 cycles) related to the loss of active material‐carbon conducting contact regions contributes to moderate rate performance and cycling stability. The need for high specific energy cathodes that meet practical electrochemical requirements has prompted a search for new materials. Herein, we introduce a new carbon‐coated Na3VFe0.5Ti0.5(PO4)3 (NVFTP/C) material as a promising candidate in the NASICON family of cathodes for SIBs. With a high specific energy of ∼457 Wh kg−1 and a high Na+ insertion voltage of 3.0 V versus Na+/Na, this cathode can undergo a reversible single‐phase solid‐solution and two‐phase (de)sodiation evolution at 28 C (1 C = 174.7 mAh g−1) for up to 10,000 cycles. This study highlights the potential of utilizing low‐cost and highly efficient cathodes made from Earth‐abundant and harmless materials (Fe and Ti) with enriched Na+‐storage properties in practical SIBs. [ABSTRACT FROM AUTHOR]

Zinc-ion batteries (ZIBs) have garnered substantial attention as a potential alternative to Li-ion batteries (LIBs) because of their low cost and high safety. However, commercialization challenges persist for ZIBs, which are primarily attributed to the absence of electrode materials with sufficient energy density. In this study, we initiate the exploration of β-LiVOPO4 as a high-energy and high-power ZIB cathode due to its robust 3D structural framework and elevated operating potential. Specifically, we achieved a high working voltage of 1.61 V vs. Zn/Zn2+ for β-LiVOPO4. The cathode delivered a discharge capacity of 114.1 mA h g−1 at a current density of 100 mA g−1 with considerable cyclability and rate performance. We explored the storage mechanism of the β-LiVOPO4 cathode using various characterization techniques, including in situ synchrotron X-ray diffraction (XRD), ex situ X-ray absorption spectroscopy, ex situ XRD, and theoretical calculations. During cycling, a reversible and stable phase transition through capacitive-based surface reactions and repeated Li+/Zn2+ (de)insertion were maintained. This contributed to the high electrochemical performance of β-LiVOPO4 when used as a ZIB cathode. [ABSTRACT FROM AUTHOR]

BACKGROUND: Literature evidence describes various treatment protocols that have been employed for the effectiveness in improving survival and addressing associated symptoms of cracked teeth. OBJECTIVE: This systematic review investigates the survivability of endodontically treated cracked teeth and associated assessments, focusing on various treatment protocols. METHODS: The PRISMA guidelines were utilised for guiding the article selection framework of this review. A comprehensive search of relevant literature was conducted in May 2023 across various databases, and studies meeting the inclusion criteria were selected. Data extraction, guided by a standardized form, captured crucial details, including study characteristics, treatment protocols, and treatment outcomes, enhancing the consistency and accuracy of information collection. Data extraction and synthesis was done by two reviewers independently. The Newcastle Ottawa tool was used to measure the methodological quality of the study. Six observational studies were eventually included. RESULTS: Mandibular molars are particularly prone to developing cracks, with research indicating a heightened susceptibility to this dental issue. Studies reveal that endodontically treated cracked teeth boast robust overall survival rates ranging from 75.8% to 100%. The risk of bias assessment, utilizing the Newcastle Ottawa scale, indicated a moderate risk across studies, highlighting the necessity for careful interpretation of findings. CONCLUSION: Endodontically treated cracked teeth show marked success in survival, with the incorporation of crowns post-endodontic treatment significantly enhancing longevity and resilience. [ABSTRACT FROM AUTHOR]

In this study, we present a Prussian white (Na2MnFe(CN)6)–carbon nanotube (PW–CNT) composite material with a carbon conductive network as a promising high energy cathode for sodium-ion batteries (SIBs). This cathode, which is prepared by a chelating-agent-assisted precipitation method to regulate defect crystallization, is showcased as a promising solution to the bottlenecks of high lattice defects, irreversible phase transitions, the resulting structural instability and hence unstable cycling usually present in the PW cathode for SIBs. Precisely, the PW–CNT composite formation highlights the effectively controlled moisture content achieved through the strategic integration of CNTs and a chelating agent during the material synthesis. Moreover, the electrochemical behavior and performance of PW–CNT composites, particularly in sodium-ion batteries, are explored within the context of controlled moisture environments. The intricate interplay between PW, CNTs, and the chelating agent, as well as their synergistic influence on moisture management and subsequent electrochemical performance, is thoroughly examined. At an extreme rate of 10C, the PW–CNT composite cathode exhibited a high reversible capacity of 133 mA h g−1, very close to the theoretical value (∼140 mA h g−1), and almost 30% higher than that of the PW (∼103 mA h g−1) and 1.2 times greater than that of a conventional Prussian blue (PB) cathode (∼58 mA h g−1), respectively. A coin-type full-cell configuration with a hard carbon (HC) anode exhibited ∼58% capacity retention after 1500 cycles at 1C thereby underscoring the potential of the PW–CNT composite cathode to advance the real-time applications for energy storage applications including SIBs. [ABSTRACT FROM AUTHOR]

The limited capacities and energy densities in zinc hybrid capacitors are due to the cathode materials and electrolytes that should be further improved to satisfy large-scale applications. To overcome this challenge, in this study, an aqueous zinc hybrid battery–capacitor (AZHBC) using low cost/concentration KI redox additive-added aqueous ZnSO4 as the electrolyte, Zn metal as the anode, and heteroatom-containing porous carbon (PC) derived from gelatin bio-polymer as the cathode material is developed. The AZHBC configured as Zn//ZnSO4 + KI//PC exhibited a high capacity of 399 mA h gC−1 and a high energy density of 479.1 W h kg−1 in the voltage range of 0.2–1.8 V, which were higher than those of the high-cost ZnI2 additive-containing Zn//ZnSO4 + ZnI2//PC AZHBC, respectively. This result can be attributed to the role of the KI additive, which enhances polyiodide redox reactions (3I−/I3−, 2I−/I2 and 2I3−/3I2) at the interfacial surface of the PC electrode, and the enhanced faradaic reaction. Additionally, 1 M ZnSO4 + 0.08 M KI is identified as the optimal electrolyte concentration as it exhibited the best performance (high capacity retention (∼94.5%) after 6000 prolonged cycles). The strategy proposed in this correlation study will provide insight into the exploration of suitable and best redox additives for high-energy low-cost redox active-AZHBCs. [ABSTRACT FROM AUTHOR]