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2. Functionalized Non-Glass Fiber Nanoporous Separator for High-Performance Aqueous Zinc Ion Batteries.

Author

Zhao, Dian, Luo, Yanzhu, Qi, He, Guo, Shaojie, Zheng, Ziyan, Wang, Bangju, and Mai, Liqiang

Abstract

The escalating demand for energy coupled with the escalating concerns over environmental pollution has propelled the advancement of renewable energy technologies. Among these, aqueous zinc ion batteries (AZIBs) stand out as the most promising energy system for large-scale storage, attributed to their high safety standards, cost-effectiveness, and substantial volumetric capacity. However, significant scientific challenges persist, encompassing issues such as the formation of zinc anode dendrites, hydrogen precipitation reactions, and the dissolution of anode materials in AZIBs. A critical component in this context is the separator, which serves as a pivotal barrier preventing direct contact between the positive and negative electrodes, thereby exerting a substantial influence on the reversible cycle life of AZIBs. Notably, commercial glass fiber (GF) separators are marred by insufficient mechanical toughness and considerable thickness, resulting in compromised electrochemical performance. Consequently, there exists an urgent imperative to explore and scrutinize alternative non-GF nanoporous separator materials to realize high-performance AZIBs. This paper provides a comprehensive review of recent non-GF nanoporous separator types and summarizes the current research status on their modification methods. Moreover, the paper offers a forward-looking perspective on the potential advancements in separators for AZIBs. [ABSTRACT FROM AUTHOR]

Published
2024
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13. Annual Direct Economic Burden and Influencing Factors of Dry Eye Diseases in Central China.

Author

Luo, Yanzhu, Yang, Wanju, Qi, Mengying, Wang, Yuhong, Li, Shaowei, Wang, Mingwu, and Zeng, Qingyan

Subjects
*DRY eye syndromes, *MULTIPLE regression analysis, *MEDICAL economics, *ECONOMIC research, *LINEAR statistical models
Abstract

To study the direct economic burden of dry eye diseases (DED) on Chinese residents and analyze the influencing factors of the direct economic burden of patients with DED. Two hundred and twenty-one Chinese adults with DED who underwent treatment in Wuhan Aier Hankou Eye Hospital were enrolled in this health economics research from January 2018 to August 2018 and followed for at least 1 year. Examination, pharmacological therapy, and nonpharmacological therapy costs were collected to calculate the annual direct economic burden of DED on patients through the outpatient medical record system. Annual direct economic burden caused by DED on each patient was $465.54 ± 303.08. The direct economic burden of female patients in the 40–49 years group was significantly higher than that of male patients (P <.05). Age, number of hospital visits and severity of DED were showed a significant influence on the direct economic burden both in univariate linear regression analysis and multiple linear regression analysis. Subtype of DED was showed a significant influence on the direct economic burden in multiple linear regression analysis after eliminating confounding factors. This study preliminarily analyzed the direct economic burden of Chinese DED patients. Age, number of hospital visits, severity of DED, mixed and evaporative dry eye (EDE) subtypes are shown to be the significant influencing factors of the direct economic burden and sex is a potential influencing factor. [ABSTRACT FROM AUTHOR]

Published
2023
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14. Estimated Annual Economic Burden of Dry Eye Disease Based on a Multi-Center Analysis in China: A Retrospective Study

Author

Yang, Wanju, primary, Luo, Yanzhu, additional, Wu, Shangcao, additional, Niu, Xiaoxia, additional, Yan, Yanshuang, additional, Qiao, Chen, additional, Ming, Wei, additional, Zhang, Ying, additional, Wang, Haoyu, additional, Chen, Dan, additional, Qi, Mengying, additional, Ke, Lan, additional, Wang, Ying, additional, Li, Liping, additional, Li, Shaowei, additional, and Zeng, Qingyan, additional

Published
2021
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28. Built-in oriented electric field facilitating durable Zn MnO2 battery

Author

Lian, Sitian, primary, Sun, Congli, additional, Xu, Weina, additional, Huo, Wangchen, additional, Luo, Yanzhu, additional, Zhao, Kangning, additional, Yao, Guang, additional, Xu, Wangwang, additional, Zhang, Yuxin, additional, Li, Zhi, additional, Yu, Kesong, additional, Zhao, Hongbin, additional, Cheng, Hongwei, additional, Zhang, Jiujun, additional, and Mai, Liqiang, additional

Published
2019
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31. Tailoring Oxygen Vacancies in CoMoO4 for Superior Lithium Storage.

Author

Tao, Yuanxue, Wang, Pei, Liang, Chennan, Yang, Nan, Huang, Dekang, Chen, Hao, and Luo, Yanzhu

Subjects
TRANSITION metal oxides, SUPERCAPACITORS, DENSITY functional theory, REFLECTANCE spectroscopy, OXYGEN, CHARGE transfer, ELECTRONIC structure
Abstract

The application of transition‐metal oxides in the energy storage field is hampered by its low electronic conductivity, sluggish Li+ diffusion, and huge volume changes. The construction of oxygen vacancy defects can effectively modify the electronic structure of the active materials, accelerating the charge transfer process. Herein, the CoMoO4 nanorods with different oxygen vacancy concentrations are synthesized through the facile calcination process under N2 and Air atmospheres. The ultraviolet‐visible diffuse reflectance spectroscopy (UV‐Vis DRS) analysis and Density Functional Theory (DFT) calculation results confirm that the bandgap reduces along with the increment of the oxygen vacancy content. The CoMoO4‐N2 with higher oxygen vacancy concentration exhibits more superior electrochemical performance than CoMoO4‐Air, which delivers an ultrahigh specific capacity (999 mA h g−1 after 500 cycles at 0.5 A g−1), remarkable rate capacity (477 mA h g−1 at 9 A g−1), and excellent cycling stability (650 mA h g−1 after 1000 cycles at 2 A g−1). [ABSTRACT FROM AUTHOR]

Published
2020
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32. Phosphorus‐Functionalized Fe2VO4/Nitrogen‐Doped Carbon Mesoporous Nanowires with Exceptional Lithium Storage Performance.

Author

Tao, Yuanxue, Yang, Nan, Liang, Chennan, Huang, Dekang, Wang, Pei, Cao, Feifei, Luo, Yanzhu, and Chen, Hao

Subjects
CARBON nanowires, BAND gaps, TRANSITION metal oxides, LITHIUM-ion batteries, SILICON nanowires, CHEMICAL kinetics, ENERGY density, VANADIUM
Abstract

The binary transition metal oxides have attracted great attention because of their considerable energy and power densities. However, they suffer from low reaction kinetics and large volume change, limiting their practical energy applications. The construction of a mesoporous structure with a large surface area, the development of a carbon matrix, as well as heteroatom doping can effectively overcome the above challenges. Herein, the synthesis of phosphorous‐containing Fe2VO4/nitrogen‐doped carbon mesoporous nanowires (P‐Fe2VO4/NCMNWs) is reported. In this unique structure, the atomic‐level P‐doping could increase the conductivity of Fe2VO4 by reducing its band gap, which is confirmed by DFT calculations. Furthermore, the phosphorus can covalently "bridge" the carbon layer and Fe2VO4 through P−C and Fe−O−P bondings. As a result, this anode material exhibits a high capacity (1002 mA h g−1 at 0.5 A g−1 after 250 cycles), excellent rate performance (448 mA h g−1 at 10 A g−1), and prominent long‐term cycling stability (533 mA h g−1 at 5 A g−1 after 500 cycles, 364 mA h g−1 at 10 A g−1 after 1000 cycles). All of these attractive features make the P‐Fe2VO4/NCMNWs a promising electrode material for high‐performance lithium‐ion batteries. [ABSTRACT FROM AUTHOR]

Published
2020
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40. Recent advances in tuning the electronic structures of atomically dispersed M–N–C materials for efficient gas-involving electrocatalysis

Author

HuangThese authors contributed equally to this work., Dekang, Luo, Yanzhu, Li, Shu, Liao, Li, Li, Yunxiang, Chen, Hao, and Ye, Jinhua

Abstract

Owing to the intriguing physical, chemical, and electronic properties, atomically dispersed M–N–C materials are emerging as the most promising alternatives to noble metals for many gas-involving electrochemical reactions, like the oxygen evolution reaction, hydrogen evolution reaction, oxygen reduction reaction, and carbon dioxide reduction reaction. Current research on achieving high performance M–N–Cs is based on two aspects: one is to increase the density of active sites through a selection of appropriate precursors and smart design of the synthetic method, and the other is to boost the intrinsic activity of active sites through electronic structure modulation. In this review, we focus on the latter one and comprehensively summarize the reported strategies, including a judicious choice of central metal ions, modification of the carbon basal plane, and adjustment of the coordination environment of central metal ions, for achieving the optimized electronic structures of M–N–Cs and further correlate these structures with improved electrocatalytic performances, providing an in-depth understanding of M–N–Cs at the atomic level. Finally, to promote the practical application of M–N–Cs in clean and renewable energy conversion and storage technologies, some remaining challenges and future opportunities are pointed out.

Published
2020
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41. Facile and Scalable Synthesis of Zn3V2O7(OH)2·2H2O Microflowers as a High-Performance Anode for Lithium-Ion Batteries

Author

Yan, Haowu, Luo, Yanzhu, Xu, Xu, He, Liang, Tan, Jian, Li, Zhaohuai, Hong, Xufeng, He, Pan, and Mai, Liqiang

Abstract

The employment of nanomaterials and nanotechnologies has been widely acknowledged as an effective strategy to enhance the electrochemical performance of lithium-ion batteries (LIBs). However, how to produce nanomaterials effectively on a large scale remains a challenge. Here, the highly crystallized Zn3V2O7(OH)2·2H2O is synthesized through a simple liquid phase method at room temperature in a large scale, which is easily realized in industry. Through suppressing the reaction dynamics with ethylene glycol, a uniform morphology of microflowers is obtained. Owing to the multiple reaction mechanisms (insertion, conversion, and alloying) during Li insertion/extraction, the prepared electrode delivers a remarkable specific capacity of 1287 mA h g–1at 0.2 A g–1after 120 cycles. In addition, a high capacity of 298 mA h g–1can be obtained at 5 A g–1after 1400 cycles. The excellent electrochemical performance can be attributed to the high crystallinity and large specific surface area of active materials. The smaller particles after cycling could facilitate the lithium-ion transport and provide more reaction sites. The facile and scalable synthesis process and excellent electrochemical performance make this material a highly promising anode for the commercial LIBs.

Published
2024
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48. Doping β-CoMoO4Nanoplates with Phosphorus for Efficient Hydrogen Evolution Reaction in Alkaline Media

Author

Li, Shu, Yang, Nan, Liao, Li, Luo, Yanzhu, Wang, Shengyao, Cao, Feifei, Zhou, Wei, Huang, Dekang, and Chen, Hao

Abstract

Mass production of hydrogen by electrolysis of water largely hinges on the development of highly efficient and economical electrocatalysts for hydrogen evolution reaction (HER). Though having the merits of high earth abundance, easy availability, and tunable composition, transition-metal oxides are usually deemed as poor electrocatalysts for HER. Herein, we demonstrate that doping β-CoMoO4nanoplates with phosphorus can turn them into active electrocatalysts for HER. Theoretical calculation and experimental studies unravel that enhanced electrical conductivity and optimized hydrogen adsorption free energy are major causes for the improvement of intrinsic activity. As a result, only an overpotential of 138 mV is required to drive hydrogen evolving at a current density of 10 mA cm–2in 1 M KOH for P-doped β-CoMoO4, which outstrips many recently reported transition-metal oxides and is just slightly inferior to commercial Pt/C. This work opens a new route to tune the HER performance of transition-metal oxides.

Published
2018
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