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在LLZTO上采用协同作用的环氧德克斯特林-LiTFSI涂层,以向具有高离子导电性的PVA基复合电解质

Meng Meng¹, Renli Fu¹, Keke Ma¹

¹College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.

ACS applied materials & interfaces

|February 18, 2026

概括

在陶颗粒上使用循环德克斯-LiTFSI复合物的新涂层策略改善了离子电池的聚乙醇复合电解质,提高了电离电导率和电池性能.

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
聚合物科学聚合物科学

背景情况:

基于聚乙醇 (PVA) 的复合电解质,其中包含Li6.75La3Zr1.75Ta0.25O12 (LLZTO),由于其高离子导电性,对离子电池表示有希望.
在PVA中聚合LLZTO颗粒阻碍了离子运输,限制了电解质性能.

研究的目的:

为LLZTO颗粒制定表面修改策略,以改善它们在PVA电解质中的分散性和兼容性.
调查环极-LiTFSI (C-T) 复合涂层对LLZTO的影响及其对复合电解质的电化学特性的影响.

主要方法:

在LLZTO纳米颗粒的表面涂层中,使用循环德克斯-LiTFSI复合体 (C-T).
制造具有不同LLZTO@C-T含量的聚乙醇-离子液-LLZTO@C-T (PIL@C-T) 复合电解质.
电化学表征包括离子导电量测量和电池循环性能评估.

主要成果:

该PIL@C-T复合电解质在60重%的LLZTO含量下实现了4 × 10^-3 S/cm的离子导电性.
C-T涂层有效地改善了PVA矩阵中的LLZTO分散,并促进了快速的离子运输路径.
一个LiFePO4 PIL@C-T 电池展示了162 mAh/g的放电容量,稳定循环200个循环.

结论:

C-T涂层是一种有效的策略,可以提高复合电解质中的陶填充剂和聚合物矩阵之间的兼容性.
开发的PIL@C-T复合电解质为高性能离子电池提供了一个有前途的途径.
这种方法为设计用于储能应用的先进复合电解质提供了一种新方法.

关键词:

界面修改界面修改界面修改离子导电性的离子导电性.离子液体是一种离子液体.离子电池是一种离子电池.离子运输道的离子运输道

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