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电池的高温长期循环能力是通过释放局部约束来实现的

Yajie Song^1,2,3,4, Zinan Zhou^1,2,3, Binghan Cui⁴

¹MOE Engineering Research Center for Electrochemical Energy Storage and Carbon Neutrality in Cold Regions, Harbin Institute of Technology, Harbin, 150001, China.

Angewandte Chemie (International ed. in English)

|August 8, 2025

概括

开发用于太空探索的高温二次电池需要稳定的阳极. 这项研究引入了一种新型的耐热阳极,可以防止降解,在固态电池中可在120°C下进行超过1000个循环.

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:

高温二次电池技术对于太空探索和商业太空飞行至关重要.
金属/半金属阳极虽然具有高容量,但受到高温爬行的影响,损害了安全性和性能.
高温电池中的阳极降解与由于接口问题而形成不稳定的丰富相有关.

研究的目的:

为了确定高温电池中的降解机制.
设计一种新型的耐热阳极,以提高高温性能和安全性.
用设计的阳极展示固态电池的功能.

主要方法:

在高温电池中研究了阳极降解机制.
设计了一种耐热阳极,具有类似Zintl的相芯和符合性涂层.
用新型阳极在各种温度条件下组装和测试固态电池 (SSB).

主要成果:

确定了丰富的相生成在阳极作为一个关键的降解途径.
开发了一种耐热阳极,可以减轻接口收缩和关闭.
在120°C (2C) 达到1000多个周期的稳定循环,使用340 Wh kg-1 SSB.
证明了从-40°C到150°C的温度适应性.

结论:

设计的阳极有效地抑制了固态电池的高温降解.
这项技术为要求苛刻的应用中可靠的高温储能提供了有前途的解决方案.
与传统的盐高温电池相比,SSB具有优越的热稳定性.

关键词:

在高温的高温环境下.长周期的长周期阳极是一种阳极.固态电池是一种固态电池.

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