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基于聚乙烯化物-六烯 (PVDF-HFP) 的复合聚合物电解质,用于固态电池

Zhongran Yao¹, Fen Qi², Lin Ye¹

¹School of Automobile and Transportation, Wuxi Institute of Technology, Wuxi, 214121, China.

|March 27, 2024

概括

这项研究开发了用于固态离子电池的复合聚合物电解质,提高了安全性和性能. 这种新材料表现出高离子导电性和稳定性,抑制了树的生长.

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:

固态离子电池 (SSLIB) 与液体电解质电池相比,提供了更高的安全性.
在单个电解质中同时实现高离子导电性,低接口电阻和电极稳定性是具有挑战性的.

研究的目的:

为SSLIBs开发一个复合聚合物电解质 (CPE) 膜.
通过结合无机和有机成分来提高电化学性能和稳定性.

主要方法:

通过造,使用无机Li1.3Al0.3Ti1.7(PO4) 3 (LATP) 和有机聚乙烯化物-化) (PVDF-HFP) 制备一个复合聚合物电解质膜 (CPE).
使用Li-Li对称细胞和Li/CPE-10/NCM622细胞研究了电化学性能.

主要成果:

使用10%重量LATP (CPE-10) 的CPE膜显示出高离子转移数 (0.60) 和电化学窗口 (4.94 V).
CPE-10表现出优异的Li-金属稳定性,使稳定的Li-Li对称细胞运行超过300小时,同时抑制树.
/CPE-10/NCM622电池在0.2C时实现了152 mAh/g的特异性放电容量,在50个循环中实现了100%的库伦比效率.

结论:

开发的CPE-10为高性能SSLIB提供了一个有前途的设计策略.
复合方法有效地平衡了离子导电性,接口稳定性和电化学性能.

关键词:

复合聚合物电解质的复合聚合物电化学性能电化学性能电化学性能离子电池是一种离子电池.固态电解质固态电解质

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