锂(药物)
甲基丙烯酸甲酯
乙二醇
丙烯酸酯
电解质
共聚物
甲基丙烯酸酯
苯乙烯
化学
高分子化学
聚合物
材料科学
有机化学
电极
物理化学
内分泌学
医学
作者
Li‐Ping Yu,Yong Zhang,Jirong Wang,Hu Gan,Shaoqiao Li,Xiaolin Xie,Zhigang Xue
出处
期刊:Macromolecules
[American Chemical Society]
日期:2021-01-11
卷期号:54 (2): 874-887
被引量:29
标识
DOI:10.1021/acs.macromol.0c02032
摘要
Herein, polymer electrolytes (PEs) were designed and fabricated through lithium salt-induced in situ living radical copolymerization of poly(ethylene glycol) methacrylate (PEGMA) and various (meth)acrylates monomers (methyl methacrylate (MMA), n-butyl acrylate (BA), n-butyl methacrylate (BMA), or styrene) with 18-crown-6-ether (18CE6) as both the solvent of copolymerization and the plasticizer of PEs. The lithium salt plays a dual role of activator for alkyl halides (R–X, X = Br or I) initiators, and lithium-ion source. The polymer electrolyte in situ formed in the Li/LiFePO4 cell with a cellulose membrane showed excellent compatibility with electrode materials. The Li/P(PEGMA-co-MMA)-based PE/LiFePO4 cell possessed an initial discharge capacity of 166.5 mAh g–1 at 0.2C and maintained a capacity of 155.3 mAh g–1 at 0.2C after 290 cycles. The lithium salt-induced in situ polymerization offers a new strategy toward polymer electrolytes for high-performance lithium-ion batteries.
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