材料科学与工程学报2025，Vol.43Issue(3)：379-388,10.DOI:10.14136/j.cnki.issn1673-2812.2025.03.006
PVDF-HFP基多元柔性复合固态电解质的制备、表征与电化学性能
Synthesis,Characterization,and Electrochemical Performance for PVDF-HFP-based Multicomponent Flexible Composite Solid Electrolytes
李一桦 1胡子怡 1徐诺 1吴勇军 1黄玉辉 1洪子健1
作者信息
- 1. 浙江大学材料科学与工程学院,浙江 杭州 310058
- 折叠
摘要
Abstract
Composite electrolytes have important research value due to high flexibility,safety,good contact with electrodes,high ionic conductivity,and many other advantages.In this study,a flexible composite solid electrolyte film was synthesized using poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP)as the matrix and Li6.4La3Zr1.4Ta0.6O12(LLZTO)and Li10GeP2S12(LGPS)as inorganic fillers.The effect of LLZTO and LGPS content on the thermal stability,mechanical properties,electrochemical stability,and ionic conductivity of the electrolyte was studied.The electrochemical properties of cells were characterized.The results showed that adding LLZTO was conducive to the enhancement of thermal stability,electrochemical window,mechanical properties,and transference number,while the addition of LGPS could significantly improve the ionic conductivity and reduce the interfacial polarization.When the mass fractions of LLZTO and LGPS were both 10wt％,the composite solid electrolyte had good flexibility,excellent mechanical properties(Young's modulus＞180 MPa,tensile strength over 14 MPa),a wide electrochemical stability window(4.489 V),high ionic conductivity(0.6 mS/cm at 25℃),and good electrochemical properties(208.1 mAh/g at 0.1 C and above 99％coulombic efficiency after 200 cycles).关键词
锂离子电池/柔性复合固态电解质/离子电导率Key words
Lithium-ion batteries/Flexible composite solid electrolyte/Ionic conductivity分类
通用工业技术引用本文复制引用
李一桦,胡子怡,徐诺,吴勇军,黄玉辉,洪子健..PVDF-HFP基多元柔性复合固态电解质的制备、表征与电化学性能[J].材料科学与工程学报,2025,43(3):379-388,10.
