文献类型：期刊文献

英文题名：A general strategy for all-solid-state batteries with agglomeration-free and high conductivity achieved by improving the interface compatibility of fillers and polymer matrix

作者：Wang, Jiamin[1];Ma, Xiang[1];Liu, Mian[1];Wu, Qingping[2];Guan, Xiang[3];Wang, Fei[1];Liu, Hongmei[1];Xu, Jun[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China;[3]Univ Manchester, Dept Mat, Oxford Rd, Manchester M13 9PL, England

年份：2024

卷号：671

起止页码：248

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;EI(收录号：20242216178413);WOS:【SCI-EXPANDED(收录号:WOS:001247068900001)】；

基金：Financial support by the project of China Petroleum Engineering Corp., Ltd. (CPEC) with grant number of 2021ZYGC-01-01 is gratefully acknowledged.

语种：英文

外文关键词：Composite solid electrolyte; Graft polymerization; Fillers modification; Interface compatibility; Ionic conductivity

摘要：Composite solid electrolytes (CSEs) composed of polymer matrix and inorganic fillers show considerable potential for applications in all-solid-state lithium (Li) metal batteries. However, challenges such as fillers agglomeration and low lithium ion transference number (t(Li+)) remain significant obstacles to the practical application of CSEs. Herein, a general strategy of graft polymerization on the fillers surface to modulate the interface compatibility with the polymer matrix is proposed, and CSEs are prepared to verify the feasibility. The microstructure and composition of the surface coating of the fillers are analyzed, with subsequent studies of the fillers distribution within the CSEs confirming the improved interface compatibility. The enhancement of interface compatibility facilitates uniform dispersion of fillers, thereby greatly improving the utilization of fillers. CSEs exhibits high ionic conductivity (0.163 mS.cm(-1) at 30 degrees C) and t(Li+) (0.77), which gives the battery excellent rate performance and cycle stability. Therefore, chemical grafting of polymer onto the fillers surface to enhance the interface compatibility with the polymer matrix represents a promising strategy for the practical application of solid-state batteries.