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Updated: Jun 26, 2025

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空气稳定和低成本的高电压水合式乳学电解质,用于具有广泛温度范围的高性能水性离子可充电电池

Xiansheng Luo¹, Rui Wang¹, Longhai Zhang¹

¹Institutes of Physical Science and Information Technology, Leibniz Research Center of Materials Sciences of Anhui Province, Anhui University, Hefei 230601, China.

|May 8, 2024

概括

一种新型的水化电解质通过抑制副作用和腐蚀来提高水性离子电池的性能. 这种电解质能够在广泛的温度范围内稳定循环,为离子电池提供更安全,更低成本的替代品.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
储能储能储能储能储能储能

背景情况:

水性离子电池 (AAIB) 具有高的理论容量,安全性和低成本,但面临着不均沉积,进化和腐蚀等挑战.
恶劣的环境加剧了当前AAIB系统的性能问题.

研究的目的:

设计一种新型的水合欧电解质 (AATH40),在广泛的温度范围内提高AAIB性能.
调查电解质的结构性质关系及其对电池稳定性和反应抑制的影响.

主要方法:

用分子动力学模拟和光谱学 (包括同步FTIR) 来分析电解质结构和溶解度.
使用电化学技术 (循环,XPS,XRD,DEMS,EQCM-D) 来评估电池性能和接口形成.

主要成果:

AATH40电解质呈现出较少水溶解的结构,[Al(AN) ₂(TEP) 2(H₂O) ]³⁺,抑制了副作用反应并延长了电化学窗口.
一个稳定的固体电解质接口有效地抑制了进化反应和腐蚀.
在 Al//polyaniline 全细胞中发现了一种三电子储存机制.

结论:

开发的AATH40电解质显著提高了AAIBs在-10°C至50°C之间的循环稳定性.
这项工作提出了一个可行的策略,用于创建在不同温度条件下运行的安全,稳定和具有成本效益的AAIBs的电解质.

关键词:

水性离子电池是水性离子电池.含有水合的欧特克斯电解质的电解质气演化反应反应的反应固体电解质接口接口温度范围广泛的温度范围.

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