Dynamic Release Electrolyte Design for Stable Proton Batteries.

IF 7.5 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
ChemSusChem Pub Date : 2024-12-09 DOI:10.1002/cssc.202402105
Jian Zhang, Qing Lang, Jiayuan Yu, Yixiao Yang, Jiulong Che, Liang Chen, Gang Wang
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引用次数: 0

Abstract

Aqueous proton batteries (APBs) have recently demonstrated unprecedented advantages in the fields of ultralow temperature and high-power energy applications due to kinetically favorable proton chemistry. Proton acids (e. g. H2SO4, H3PO4) as the common proton-conducting electrolyte, however, seriously corrode electrode materials and current collectors, resulting in limited cycle life of APBs. Here we reported protonated amine as a feasible proton transport mediator and releasing source for APBs based on its dynamic chemical dissociation equilibrium. Free protons in the electrolyte are limited to a quite low level. Consequently, the optimized electrolyte with a nearly neutral pH value significantly suppresses corrosion and broadens material selection option for APBs. The CuFe-TBA electrode exhibited a long cycle performance over 40000 cycles with only ~0.0004 % attenuation rate per cycle in the optimized electrolyte. The WO3 and VO2(B) electrode also displayed high cycling stability. Benefiting from enhanced electrode stability in the optimized electrolyte, the resultant CuFe-TBA/WO3 and CuFe-TBA/VO2(B) full batteries display impressive long-term cycling performance with high-capacity retention. Our work presents a proton dynamic-release electrolyte for durable APBs which is highly promising for scalable energy systems.

稳定质子电池的动态释放电解质设计。
由于具有良好的质子化学动力学特性,水溶液质子电池(apb)近年来在超低温和高功率能源应用领域显示出前所未有的优势。质子酸(如H2SO4、H3PO4)作为常用的质子导电电解质,对电极材料和集流器的腐蚀严重,导致apb的循环寿命有限。基于质子化胺的动态化学解离平衡,我们报道了质子化胺作为质子转运介质和APBs释放源的可行性。电解质中的自由质子被限制在一个相当低的水平。因此,优化后的电解液具有接近中性的pH值,显著抑制了腐蚀,拓宽了apb的材料选择范围。在优化的电解液中,CuFe-TBA电极表现出超过40000次的长周期性能,每周期衰减率仅为~0.0004%。WO3和VO2(B)电极也表现出较高的循环稳定性。得益于优化后的电解质中电极稳定性的增强,得到的CuFe-TBA/WO3和CuFe-TBA/VO2(B)全电池表现出令人印象深刻的长期循环性能和高容量保持。我们的工作提出了一种用于耐用apb的质子动态释放电解质,它在可扩展的能源系统中非常有前途。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ChemSusChem
ChemSusChem 化学-化学综合
CiteScore
15.80
自引率
4.80%
发文量
555
审稿时长
1.8 months
期刊介绍: ChemSusChem Impact Factor (2016): 7.226 Scope: Interdisciplinary journal Focuses on research at the interface of chemistry and sustainability Features the best research on sustainability and energy Areas Covered: Chemistry Materials Science Chemical Engineering Biotechnology
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