In situ preparation of gel polymer electrolyte for lithium batteries: Progress and perspectives

作     者：Chao Ma Wenfeng Cui Xizheng Liu Yi Ding Yonggang Wang 

作者机构：Tianjin Key Laboratory of Advanced Functional Porous MaterialsInstitute for New Energy Materials and Low-Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjinChina Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsInstitute of New EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Fudan UniversityShanghaiChina 

出 版 物：《InfoMat》 (信息材料（英文）)

年 卷 期：2022年第4卷第2期

页      面：110-125页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Harbin Engineering University Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education National Natural Science Foundation of China,Grant/Award Number:U1804255 National Key Research and Development Program of China,Grant/Award Numbers:2018YFE0124500,2018YFE0201702。 

主　　题：cross-linking gel electrolytes in situ preparation Li-metal batteries polymerization 

摘      要：The practical applications of Li-ion batteries(LIBs)are challenged by their safety concerns when using liquid electrolytes(LEs).Solid-state gel polymer electrolytes(GPEs)can address this challenge and have drawn increased attention recently.Normally,GPEs are prepared separately and then assembled into cells,which undoubtedly result in dissatisfactory solid/solid interfacial compatibility and low ionic conductivity.Fortunately,in situ GPEs are proposed to address the above challenges and simplify the preparation process.Typically,LE precursor is injected into the cells and gradually transformed into a quasisolid gel state under the conditions of thermal or chemical initiators.Consequently,the obtained in situ GPEs could fully infiltrate the electrode and better interface contact of gel electrolyte/electrode is thus inherited.In this review,the authors focus on the in situ GPEs used in lithium batteries(LBs),and summarize recent progress of the design,synthesis,and applications of in situ GPEs.Based on the different ways of triggering polymerization,there are mainly three methods:thermochemical gelation,polymerization by additional chemical initiators,and cross-linking initiated by Li O bond.Composite GPEs based on in situ solidification method are introduced as a promising strategy to improve the electrochemical performances.Finally,up-to-date research progresses are discussed,and perspectives are provided on the development and challenges of in situ GPEs to meet the requirements for their practical applications in LBs.