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用于全固态离子电池的多相微观结构的纸负电极

Yuhgene Liu¹, Congcheng Wang², Sun Geun Yoon²

¹School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.

Nature communications

|July 18, 2023

概括

研究人员为固态离子电池开发了先进的-合金负电极. 这项创新提高了充电存储能力和循环稳定性,为下一代高能电池铺平了道路.

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:

有的金属合金为可充电电池提供了高的理论容量.
这些合金在液体电解质中的有限可逆性阻碍了性能.

研究的目的:

为了研究所有固态离子电池中的非预先化-合金负电极.
为了提高高能电池负电极的可逆性和速率能力.

主要方法:

在纸上制造-合金微结构.
实验室规模的全固态离子电池组装使用固态电解质和分层氧化物正极.
电化学测试以评估在高电流密度下循环稳定性和容量.

主要成果:

在数百个循环中实现稳定的循环,实际上具有相关的面积容量.
高电流密度 (6.5 mA cm−2) 显示出更好的速率行为和增强的可逆性.
多相 Al-In 微结构与分布式 LiIn 网络是性能的关键.

结论:

负电极的金设计为改进全固态电池提供了一条道路.
通过这种方法,可以简化制造工艺.
-合金显示出下一代储能解决方案的前景.

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