电池2023，Vol.53Issue(6)：652-656,5.DOI:10.19535/j.1001-1579.2023.06.014
原位聚合制备基于聚离子液体的聚合物固态电解质
Preparation of poly(ionic liquid)-based solid polymer electrolytes by in situ polymerization
摘要
Abstract
Liquid electrolyte had the hidden danger of leakage and deflagration,its practical application in lithium metal battery was limited.Solid polymer electrolyte(SPE)prepared using ionic liquids had several advantages,including good flame-retardant property,good thermal stability and high chemical and electrochemical stability,thus had good potential for use in lithium metal battery.A novel ion-liquid monomer(IL)was designed and synthesized,which was copolymerized with vinyl ethylene carbonate(VEC)using a free radical polymerization reaction to prepare P(IL-VEC)-based SPE.The SPE exhibited good thermal stability and flame-retardant property and demonstrated high ionic conductivity at room temperature,which could inhibit the growth of lithium dendrite and achieve stable electrolyte-electrode interface.The all solid-state lithium battery using a lithium iron phosphate cathode and the SPE exhibited good cycling stability and rate capability.It could deliver an initial specific discharge capacity of 154 mAh/g at a rate of 0.2 C cycled in 2.8-3.8 V,with stable cycling for more than 200 times and a remaining capacity of 118 mAh/g at the 230th cycle.关键词
聚离子液体/聚合物固态电解质(SPE)/固态锂电池Key words
poly(ionic liquid)/solid polymer electrolyte(SPE)/solid-state lithium battery分类
信息技术与安全科学引用本文复制引用
谢思思,王海燕..原位聚合制备基于聚离子液体的聚合物固态电解质[J].电池,2023,53(6):652-656,5.基金项目
国家自然科学基金(11404099) （11404099）
