Dynamic Release Electrolyte Design for Stable Proton Batteries

Jian Zhang, Qing Lang, Jiayuan Yu, Yixiao Yang, Jiulong Che, Liang Chen, Gang Wang

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

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.

源语言英语
文章编号e202402105
期刊ChemSusChem
18
8
DOI
出版状态已出版 - 14 4月 2025
已对外发布

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