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为具有高速率和超稳定的循环能力的全固态质子电池提供双功能阴离子共价有机框架

Qiao Qiao^1,2, Xiao-Qin Ni¹, Xiaosong Xiong^2,3

¹College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, P.R. China.

Angewandte Chemie (International ed. in English)

|November 11, 2025

概括

本研究介绍了一种用于质子电池 (PB) 的新双功能策略,使用独特的共价有机框架 (EB-COF) 来稳定电极和电解质. 这一创新显著提高了全固态PBs的性能和稳定性.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
储能储能储能储能储能储能

背景情况:

质子电池 (PB) 提供高功率密度,但受到电解质不稳定性的限制.
液体电解质导致阳极溶解,而固体电解质的导电性低,兼容性差.

研究的目的:

开发一种稳定高性能全固态质子电池.
为了克服质子电池中常规电解质的局限性.

主要方法:

从乙基化物 (EB) 和2,4,6-三甲基 (TP) 合成了一种双功能阴离子共价有机框架 (EB-COF).
利用EB-COF稳定聚酸盐 (PMo12) 阳极,并将H3PO4限制在固态电解质中.
研究EB-COF:H3PO4电解质的电化学特性,包括导电性和稳定性.

主要成果:

该EB-COF:H3PO4电解质表现出高质子导电性 (>10^-2 S cm^-1) 和广泛的电化学稳定性窗口 (3.3 V与SCE).
组装的质子电池表现出了极好的速率能力和循环稳定性,在15000个循环中保持了91%的容量,在10 A g^-1.
实现的性能超过了以前报告的所有固态质子电池.

结论:

双功能EB-COF战略有效地提高了质子电池中的电极-电解质兼容性和结构稳定性.
这种方法为开发可靠和高性能全固态质子电池提供了有希望的途径.
为未来研究先进的储能系统提供了宝贵的见解.

关键词:

所有固态质子电解质.阴离子共价有机框架质子电池的阳极是质子电池的阳极

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