探测空隙扩散对金属-固体电解质接口空隙动力学的影响
Sourim Banerjee1, Bairav S Vishnugopi1, Partha P Mukherjee1
1School of Mechanical Engineering, Purdue University, West Lafayette, IN, 47907, USA.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 24, 2025
概括
这项研究揭示了表面扩散机制和温度控制如何控制固态电池中的金属阳极稳定性. 了解这些因素是防止空隙形成和提高电池性能的关键.
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:
- 金属固态电池 (SSB) 提供高能量密度和安全性.
- 在固体电解质接口的接口空隙形成阻碍了SSB的性能.
研究的目的:
- 研究电溶动力学和表面扩散如何影响剥离过程中的金属阳极形态.
- 探索维护界面稳定性和克服SSB中接触损失的机制.
主要方法:
- 分析了三个表面扩散模式:露台,台阶和层间扩散.
- 量化了金属阳极表面粗度,并检查了动态接口演变.
- 研究了温度对表面扩散率的影响.
主要成果:
- 根据扩散机制和电化学动力学,确定了基于接口稳定性的独特制度.
- 证明了主导的表面扩散如何减轻因高反应动力学引起的接触损失.
- 展示了温度在增强的扩散性和稳定接触方面的关键作用.
结论:
- 表面扩散模式和温度对于SSB中稳定的固体电解质接口至关重要.
- 了解这些动态为设计强大的接口和改善电池寿命提供了原则.
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