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在现场建造富含NaF的固体电解质介面与金属Ce站点,用于稳定的无阳极金属电池

Peng Xu¹, Fei Huang¹, Zhexuan Liu²

¹School of Materials Science and Engineering, Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, Central South University, Changsha, Hunan, 410083, P.R. China.

Angewandte Chemie (International ed. in English)

|October 3, 2025

概括

这项研究引入了一种新的现场富含化的固体电解质间相 (SEI) 与金属位,用于稳定的无阳极金属电池 (AFSMB). 这一突破使得超长周期的稳定性,即使在高深度的放电.

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:

稳定的金属电池需要强大的固体电解质介面 (SEI) 来进行可逆的涂/剥离.
目前的SEI策略经常使用不切实际的高度盐或化溶剂,限制无阳极金属电池 (AFSMB) 的性能.

研究的目的:

开发一个在现场生成的,稳定的SEI,用于高排放深度AFSMBs.
为了研究一种新的SEI组成,提高界面稳定性和离子传输.

主要方法:

操作同步射线X射线吸收光谱和飞行时间二次离子质谱 (TOF-SIMS) 用于分析SEI.
使用CeF3@NC基板,以促进与金属位的NaF丰富的SEI在现场形成.

主要成果:

成功地形成了具有金属位的in situ NaF丰富的SEI,防止电解质分解.
设计的SEI表现出卓越的界面稳定性,使得极长时间的阳极稳定性 (5800小时在20%的DOD,1600小时在90%的DOD).
完整电池和袋式电池表现出极好的循环稳定性,即使在高阴极负载下,也保持了超过90%的容量.

结论:

基板驱动的现场SEI形成是增强AFSMB稳定的可行策略.
金属位促进Na+溶解,改善电池的整体性能.
这种方法通过提供强大而稳定的接口来加速AFSMB的实际应用.

关键词:

活跃的网站活跃的网站没有阳极的金属电池.排放的深度排放的深度在现场固体电解质相间阶段.沉积是一种沉积.

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