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在全固态电池中,通过顺序引导和限制动态控制树的生长

Longbang Di^1,2, Zongji Huang³, Lei Gao¹

¹School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen 518055, China.

Science advances

|August 20, 2025

概括

研究人员使用分级化物颗粒开发了一种新型结构层,以引导固态电解质 (SSEs) 中的树脂生长. 这种策略控制了树突的形成,提高了全固态金属电池的安全性.

科学领域:

材料科学
电化学
能量储存

背景情况:

固态电解质 (SSEs) 对于抑制金属电池中的树脂透至关重要.
然而,由于SSE的特性,树脂的生长仍然是一个固有的挑战.
控制树的生长比完全预防更实用.

研究的目的:

设计一个结构层, 可以控制树的生长.
开发一个双层的SSE系统,用于动态的树管理.
提高完全固态金属电池的安全性和性能.

主要方法:

用分级的化物颗粒制造结构层.
这个层与不太稳定的电解质的整合.
在电池循环过程中对界面压力和状物行为的分析.

主要成果:

这种分级化物层成功地限制了特定区域内的树生长.
双层SSE系统在接口上显示了自我限制的树突生长.
在循环中产生的界面压力有效地用于动态状物控制.

结论:

设计的界面结构为调节树突提供了可行的策略.
这种方法在改进全固态金属电池方面具有广泛的应用.
动态控制树生长可以提高电池的安全性和寿命.

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