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实现高度稳定的金属电池,具有自适应性和高离子流动性的陶纤维膜

Weijing Bai¹, Jianhui Zhu², Yanlong Wang³

¹School of Materials and Energy, Southwest University, No. 2 Tiansheng Road, BeiBei District, Chongqing 400715, PR China.

Journal of colloid and interface science

|January 20, 2024

概括

一种新型的Al2SiO5陶纤维膜使沉积均,并抑制金属电池中树的生长. 这一突破为实际应用增强了电池的稳定性和寿命.

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:

金属电池 (SMB) 面临的挑战是,树的生长和液体电解质中的阳极可逆性差.
现有的陶纤维 (CF) 膜提供热稳定性和离子流动性,但需要增强以获得最佳性能.

研究的目的:

开发一种自我适应的Al2SiO5陶纤维 (CF) 膜,用于在中小企业中均的沉积和树抑制.
为了提高金属电池的循环稳定性和电压两极化.

主要方法:

制造和表征Al2SiO5陶纤维膜.
用新型膜测试对称的细胞.
使用Na3V2(PO4) 3阴极和Na阳极组装和电化学评估全面的中小企业.
固体电解质介相 (SEI) 层的现场检测和死后分析.

主要成果:

CF膜显示高Na+转移数 (0.65) 和电解质可湿性,导致对称细胞的低电压极化 (14mV) 和长周期寿命 (>600小时).
CF膜中的性成分与基于电解质的F分子相互作用,在SEI层中形成基于Al/F的无机物.
完全使用CF膜的SMB显示出卓越的周期稳定性,在1C的600个周期后保持超过78.7%的容量.

结论:

开发的Al2SiO5陶纤维膜有效地抑制了树的生长,并提高了阳极的可逆性.
在现场形成的基于Al/F的SEI层对于保护金属阳极至关重要.
这一战略为推进高能金属电池提供了可行的解决方案.

关键词:

陶纤维膜是一种陶纤维膜.高的Na(+) 流动性自适应功能自适应功能.金属电池中的金属电池稳定阳极接口稳定阳极接口

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