光致聚合物
电解质
单体
聚合
材料科学
高分子化学
丙烯酸酯
聚合物
锂(药物)
离子电导率
乙二醇
季戊四醇
化学工程
自由基引发剂
化学
有机化学
电极
复合材料
医学
物理化学
阻燃剂
工程类
内分泌学
作者
Myung‐Hyun Ryou,Yong Min Lee,Kuk Young Cho,Gui Young Han,Je-Nam Lee,Dong Jin Lee,Jang Wook Choi,Jung-Ki Park
标识
DOI:10.1016/j.electacta.2011.10.072
摘要
Highly ion-conductive gel polymer electrolyte (GPE) with mechanical flexibility is developed by incorporating liquid electrolyte into polymer films that are fabricated by initiator-free photopolymerization of poly(ethylene glycol) dimethacrylate (acrylate monomer) and pentaerythritol tetrakis (3-mercaptopropionate) (thiol monomer) blend. When UV is irradiated on the blend, the thiol monomers themselves produce radicals to initiate the polymerization. GPEs with 40–50 wt.% of thiol monomer content show mechanically free standing characteristics with sufficient flexibility. The ionic conductivity of the GPE reaches1.1 × 10−3 S cm−1 at 25 °C and is thus high enough to be applied for lithium secondary batteries. The GPE is electrochemically stable up to 4.4 V versus Li/Li+ and the unit cells consisting of LiCoO2/GPE/lithium metal show good cycling performance. This GPE is thus considered a good electrolyte candidate for future flexible and wearable lithium secondary batteries.
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