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控制稳定和低温电池的层结构阴极之间的竞争扩张和收缩

Xuelian Liu¹, Quan Zong², Keyi Chen¹

¹College of Materials and Chemistry, China Jiliang University, Hangzhou 310018, Zhejiang, People's Republic of China.

Journal of colloid and interface science

|September 4, 2025

概括

将离子预先插入到化氧化物阴极中可以提高结构完整性和离子传输. 这一策略提高了水性离子电池的电化学性能和稳定性.

科学领域:

材料科学
电化学
能量储存

背景情况:

水性离子电池 (AZIB) 为储能提供了一个可持续的替代方案.
提高阴极结构完整性和离子动力学对于AZIB的性能至关重要.
预插入策略有望改善阴极材料.

研究的目的:

调查离子预插入对酸阴极的影响.
了解预间接如何影响平面间距和电化学性质.
评估阴极电解质相间层 (CEI) 的形成和功能.

主要方法:

离子预间接氧化物 (2Zn-VOH) 的合成.
电化学特性包括容量,循环稳定性和低温性能.
分析结构变化和CEI层的形成.

主要成果:

预间隔诱导平面间距的竞争扩张和收缩,增强电化学性质.
在现场形成Zn3OH2V2OCEI层抑制了溶解并调节了离子溶解.
2Zn-VOH阴极实现了高容量 (395 mAh g$^{-1}$在0.1 A g$^{-1}$),卓越的循环稳定性,以及显著的低温性能 (295 mAh g$^{-1}$在-10 °C).

结论:

离子预插入是改善AZIB中的氧化物阴极的有效策略.
优化的结构和CEI层有助于提高容量,稳定性和低温操作.
这项工作为开发水性能量存储的高性能阴极材料提供了途径.

关键词:

水性离子电池阴极电解质间相具有竞争力的平面间距有层的阴极

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