广西科技大学学报2024，Vol.35Issue(3)：107-113,7.DOI:10.16375/j.cnki.cn45-1395/t.2024.03.014
不同烘干温度下PVDF-HFP基准固态电解质的制备与性能研究
Preparation and performance of PVDF-HFP benchmark solid-state electrolytes at different drying temperatures
摘要
Abstract
Solid-state batteries are of great interest to researchers due to their excellent performance.However,the preparation time of the electrolyte film is long in most current studies.Therefore,the method of increasing the fabrication temperature was used to shorten the preparation time.Firstly,a solid-state electrolyte film based on polyvinylidene fluoride-hexafluoropropylene(PVDF-HFP)was prepared,and the effects of three drying temperatures of 60℃,70℃and 80℃on the electrochemical performance of the electrolyte film were investigated.Secondly,a solid-state battery was assembled with lithium iron phosphate(LiFePO4)as the positive electrode and lithium wafer as the negative electrode.Then,the charging and discharging performances of the solid-state battery were investigated.The results showed that the electrolyte film under 80℃drying condition exhibited excellent electrochemical performance,with the lithium ion mobility number reaching 0.53 and the ionic conductivity reaching 3.26×10-4 S/cm;and the assembled lithium iron phosphate battery had a specific capacity of 137 mA·h/g for the first turn charging at 0.1C,and the specific capacity of 129 mA·h/g for the first turn discharging,and the charging and discharging efficiency was 94%after 20 cycles,which had a good cycling performance.关键词
烘干温度/紫外光固化/PVDF-HFP/LATPKey words
drying temperatures/UV curing/PVDF-HFP/LATP分类
信息技术与安全科学引用本文复制引用
卢炫安,罗建国,梁兴华,王玉莹,浑前坤,贠淑宏,史雪利,沈鹏程..不同烘干温度下PVDF-HFP基准固态电解质的制备与性能研究[J].广西科技大学学报,2024,35(3):107-113,7.基金项目
国家自然科学基金项目(52161033) （52161033）
广西自然科学基金项目(2020GXNSFAA297082)资助 （2020GXNSFAA297082）
