在全固态电池中双层合金阳极的堆叠依赖序列性能和界面故障机制
Mingqi Wang1, Zengjie Fan1, Bing Ding1,2
1Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China.
Small methods
|December 8, 2025
概括
在复合阳极中优化和的堆叠顺序可显著提高全固态电池 (ASSB) 的性能. 将作为顶层增强了可逆性和循环稳定性.
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:
- 合金阳极为全固态电池 (ASSB) 提供高容量,但体积变化会导致接口故障.
- 具有多层设计的复合合金阳极可以提高导电性和稳定性.
研究的目的:
- 研究堆叠序列如何影响Si-Al复合阳极的结构演变和电化学性能.
- 确定稳定和高性能复合阳极的合理设计的关键因素.
主要方法:
- 复合电极的制造和电化学测试,具有不同的Si和Al层排列.
- 在循环条件下分析结构演变和界面特性.
主要成果:
- 电极性能严重依赖于上层的塑料可变性和电化学潜力.
- Si-上层配置实现了87.3%的初始库伦比克效率,超过了Al-上层 (59.3%).
结论:
- 组件堆叠序列对于减轻复合合金阳极的动力限制至关重要.
- 阳极架构的战略设计增强了ASSB的可逆性,速率能力和整体稳定性.
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