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通过高性能水性离子电池的接口结网协调离子沉积动力学
Lin Qin1, Dengqiao Xiao2, Miaomiao Qiu1
1School of Microelectronics and Integrated Circuits (Jiangsu Key Laboratory of Semi. Dev. & IC Design, Package and Test), Nantong University 226019, Nantong, Jiangsu, China.
Journal of colloid and interface science
|December 14, 2025
概括
乳醇 (LACT) 稳定水性离子电池 (AZIB) 中的阳极,通过抑制树突的生长和减轻水引起的腐蚀. 这种添加剂提高了电池的性能和寿命,为实际的AZIB应用铺平了道路.
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:
- 由树突沉积和水诱导的副作用引起的阳极的界面降解,阻碍了水性离子电池 (AZIB) 的实际使用.
- 有效稳定阳极对于改善AZIBs的周期寿命和性能至关重要.
研究的目的:
- 研究乳醇 (LACT) 作为一种多功能添加剂,用于稳定AZIB中的阳极.
- 阐明LACT提高界面稳定性和电化学性能的机制.
主要方法:
- 理论计算 (例如,密度函数理论) 以了解LACT与阳极和Zn2+离子的相互作用.
- 实验电化学测试,包括对称Zn//Zn细胞循环和全细胞性能评估 (Zn//AVO).
- 表面分析技术,以描述由LACT形成的保护层.
主要成果:
- 通过基组,LACT强烈吸附到Zn阳极上,形成一个统一的界面层,指导Zn2+沉积并抑制树突的生长.
- LACT层有效地阻断了Zn表面的水,减轻了腐蚀,并通过与水的结合抑制了演变反应 (HER).
- LACT修改了Zn2+溶解,降低了核化能量并增强了沉积动力学,从而提高了速率性能.
- Zn//Zn对称细胞经过3840个小时的稳定循环. 在高电流密度下,Zn//AVO电池表现出高容量保留率 (例如,在10Ag-1下2000个循环后91.66%).
结论:
- 乳醇是一种高效的添加剂,用于稳定AZIB中的阳极.
- 拉克特为界面调节提供了一个简单有效的策略,大大提高了AZIB的性能和周期寿命.
- 这项工作为开发高性能水性离子电池提供了宝贵的见解.
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