An in-situ cross-linked network PMMA-based gel polymer electrolyte with excellent lithium storage performance  

作　　者：Shaopan Qin Min Wu Hongshun Zhao Jianbin Li Maoyin Yan Yurong Ren Yanli Qi 

机构地区：[1]School of Materials Science and Engineering,Jiangsu Province Engineering Research Center of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery,Changzhou Key Laboratory of Intelligent Manufacturing and Advanced Technology for Power Battery,Changzhou University,Changzhou 213164,China

出　　处：《Journal of Materials Science & Technology》2024年第32期197-205,共9页材料科学技术(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.U22A20420);the Science and Technology Plan Project of Changzhou(No.CJ20235017);In addi-tion,the authors thank Jiangsu Development&Reform Commis-sion for their support.

摘　　要：Gel polymer electrolytes(GPEs)effectively combine the advantages of high ionic conductivity and re-duce the risk of leakage associated with liquid.In this study,a chemically cross-linked gel polymer electrolyte was prepared by in-situ polymerization using polymethyl methacrylate(PMMA)as a matrix and neopentyl glycol diacrylate(NPGDA)as cross-linking agent.The cross-linked structure of the GPE was preliminarily investigated,as well as the influence of the degree of cross-linking on its phys-ical properties.The GPE exhibited a superior conductivity of 1.391 mS cm^(-1) at 25℃.Herein,the Li|GPE|LiNi_(0.8) Co_(0.1) Mn_(0.1) O_(2) cell has an excellent capacity retention rate of 80.7%after 150 cycles at 0.5 C in addition to a high discharge specific capacity of 203 mAh g^(-1).The structure of the cathode ma-terial is shielded from the production of byproducts during the charging and discharging of lithium-ion batteries by the cross-linked PMMA GPE.

关 键 词：Lithium-ion batteries In-suit polymerization Gel polymer electrolyte Polymethyl methacrylate Cross-linked network 

分 类 号：O63[理学—高分子化学]