福建师范大学学报（自然科学版）2025，Vol.41Issue(1)：30-38,9.DOI:10.12046/j.issn.1000-5277.2024070020
PEO复合PVDF-HFP基聚合物电解质的离子传导及电化学性能调制研究
Modulation of Ionic Conductivity and Electrochemical Performance in PEO-modified PVDF-HFP-based Polymer Electrolytes
摘要
Abstract
Polyvinylidene fluoride-co-hexafluoropropylene(PVDF-HFP)-based polymer elec-trolytes suffer from issues such as low ionic conductivity and poor interfacial stability with lithium(Li)metal at room temperature,which limit their range of applications.To address this,poly(ethylene oxide)(PEO),which possesses elasticity and viscosity,is incorporated into the PVDF-HFP-based electrolyte to enhance its ionic conductivity and interfacial compatibility with electrodes.The electrolyte,mixed with PVDF-HFP and PEO in a 3∶1 mass ratio,exhibits the highest ionic conductivity(5.618×10-4 S·cm-1)and lithium ion(Li+)transport number(0.403)at room tem-perature.The Li-Li symmetric cells assembled with this electrolyte can stably undergo electroplating-stripping for up to 650 h under a current density of 0.10 mA·cm-2 at 25℃.Full batteries,as-sembled with a LiCoO2 cathode and lithium anode,maintain a specific capacity of 115.9 mA·h·g-1 after 50 cycles at 0.2 C-rate.关键词
固态电池/固体电解质/聚氧化乙烯/PVDF-HFP/离子传导Key words
solid-state batteries/solid electrolyte/PEO/PVDF-HFP/ion conduction分类
动力与电气工程引用本文复制引用
龚炜梁,文浪,蔡燕煌,姜晗,陶剑铭,林应斌..PEO复合PVDF-HFP基聚合物电解质的离子传导及电化学性能调制研究[J].福建师范大学学报（自然科学版）,2025,41(1):30-38,9.基金项目
国家自然科学基金项目(12174057) （12174057）
福建省自然科学基金项目(2023J01522) （2023J01522）
