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阴离子工程梯度接口结构向无树和无穿的水性电池

Jiayi Li¹, Xiao Zhang², Xinming Xu²

¹School of Chemistry and Chemical Engineering, Hainan University, Haikou, 570228, P. R. China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|July 28, 2025

概括

使用乙胆 (ACh+) 的新接口策略修改了水性电池的电双层 (EDL). 这种方法抑制了树的生长和副作用,提高了电池的稳定性和性能.

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Zn-电池 (AZIB) 面临的挑战包括不受控制的树枝状物生长,水侧反应和聚酸穿.
这些问题限制了AZIB的周期寿命和效率,阻碍了它们的实际应用.
优化阳极接口对于克服这些局限性至关重要.

研究的目的:

开发一种有效的策略来调节AZIBs中Zn阳极的电双层 (EDL).
通过界面修改来抑制有害的副作用并提高AZIB的稳定性.
为了提高水性Zn-电池的整体性能和周期寿命.

主要方法:

用了一种两性乙胆酸盐 (ACh+) 作为 Zn 阳极的界面修饰剂.
在 Zn 阳极表面设计了一种疏水-疏水性渐变界面结构.
研究了修改后的EDL对沉积,离子运输和聚酸穿抑制的影响.

主要成果:

经ACh+修改的EDL结构有效地减少了直接的Zn电解质接触,并抑制了副作用.
该策略显著降低了Zn2+溶解能量屏障,并抑制了聚胺转运.
达到了高库伦比克效率 (99.82%) 和 Zn 阳极显著的长期稳定性.
在25000个周期内,Zn-I2全细胞表现出超低容量衰变率.

结论:

使用ACH+的"EDL导向调节器"战略为AZIB中的接口工程提供了一种有效的方法.
优化 Zn 阳极界面化学是提高水性 Zn-电池性能和耐久性的关键.
这项工作为开发用于储能应用的高性能和稳定的AZIB提供了有前途的方法.

关键词:

水性Zn-电池的使用方法沉积行为沉积行为电气双层的电气双层.梯度界面结构的梯度界面结构.离子解溶离离子解溶

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