稳定质子电池的动态释放电解质设计。

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

摘要

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。

Dynamic Release Electrolyte Design for Stable Proton Batteries

Dynamic Release Electrolyte Design for Stable Proton Batteries

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.

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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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