Lithium bis(oxalate)borate crosslinked polymer electrolytes for high-performance lithium batteries

作     者：Xiao Wang Jujie Sun Changhao Feng Xiujuan Wang Minghan Xu Jingjiang Sun Ning Zhang Jun Ma Qingfu Wang Chengzhong Zong Guanglei Cui Xiao Wang;Jujie Sun;Changhao Feng;Xiujuan Wang;Minghan Xu;Jingjiang Sun;Ning Zhang;Jun Ma;Qingfu Wang;Chengzhong Zong;Guanglei Cui

作者机构：Key Laboratory of Rubber-plasticsMinistry of EducationSchool of Polymer Science and EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101ShandongChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2021年第30卷第4期

页      面：228-235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）] 080502[工学-材料学] 

基　　金：supported by funding from the Shandong Natural Science Excellent Youth Fund(ZR2019YQ22) the Research Initiation Fund of Qingdao University of Science and Technology 

主　　题：Self-formed Crosslinking structure Polymer electrolyte Lithium batteries 

摘      要：Solid electrolytes play a vital role in solid-state Li secondary batteries,which are promising high-energy storage devices for new-generation electric ***,obtaining a suitable solid electrolyte by a simple and residue-free preparation process,resulting in a stable interface between electrolyte and electrode,is still a great challenge for practical ***,we report a self-crosslinked polymer electrolyte(SCPE)for high-performance lithium batteries,prepared by a one-step method based on 3-methoxysilyl-terminated polypropylene glycol(SPPG,a liquid oligomer).It is worth noting that lithium bis(oxalate)borate(Li BOB)can react with SPPG to form a crosslinked structure via a curing *** self-formed polymer electrolyte exhibits excellent properties,including high roomtemperature ionic conductivity(2.6×10^(-4) S cm^(-1)),wide electrochemical window(4.7 V),and high Li ion transference number(0.65).The excellent cycling stability(500 cycles,83%)further highlights the improved interfacial stability after the in situ formation of SCPE on the electrode ***,this self-formation strategy enhances the safety of the battery under mechanical ***,the present self-crosslinked polymer electrolyte shows great potential for applications in high-performance lithium batteries.