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Updated: Jul 22, 2025

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用于室温离子电池的β-PbSnF₄电解质具有高内在离子导电性的构建和界面修改

Jiali Liu¹, Lingguang Yi¹, Xiaoyi Chen¹

¹National Base for International Science & Technology Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage & Conversion, School of Chemistry, Xiangtan University, Xiangtan 411105, China.

ACS applied materials & interfaces

|July 24, 2023

概括

将少量的液态电解质 (LE) 引入固态离子电池 (FIB) 显著降低了接口电阻. 这种增强提高了电池性能,提高了先进的储能应用的容量和周期寿命.

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
固态电池固态电池是什么

背景情况:

固态离子电池 (FIB) 提供了高的理论能量密度和安全性.
固体电极和电解质之间的显著界面电阻阻碍了FIB的性能.
开发有效的策略来缓解接口问题对于推进FIB技术至关重要.

研究的目的:

研究引入微量液态电解质 (LE) 对固态离子电池 (FIB) 界面性能的影响.
为了最大限度地降低界面电阻,提高FIB的电化学性能和周期寿命.
探索使用LE作为改善FIB的可行策略的界面修改的潜力.

主要方法:

制备具有高室温离子导电性的β-PbSnF4固态电解质.
在电极和电解质之间引入微量液态电解质 (LE) 作为接口湿化剂.
使用艾伦-希克林模拟来分析界面电荷和质量转移动力学.

主要成果:

添加LE通过降低电荷和质量转移的能量屏障,显著降低了界面电阻.
经过修改的FIB显示出较高的初始放电容量 (210.5 mAh g-1),与未经修改的FIB相比 (170.9 mAh g-1).
容量保留有了显著的改善,在50个周期后,已修改的FIB达到82.6%,而未经修改的FIB仅为22.1%.

结论:

用微量LE进行界面修改是提高固态离子电池性能的有效策略.
该LE作为湿剂,改善界面接触和动力学,导致更好的电化学性能.
这种方法为开发高性能和可靠的FIB提供了一个有希望的方向.

关键词:

界面的修改是界面的修改.接口电阻的介面电阻.在室温室温.固态离子电池固态离子电池 β-PbSnF4 的情况.

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