Enhanced Li+migration in solid polymer electrolyte driven by anion-containing polymer-chains

作     者：Xingyi Zhang Modeste Venin Mendieev Nitou Wenjun Li Zhao Wan Longfei Liu Zhaohui Luo Sohail Muhammad Wu Qin Liang An Yinghua Niu Weiqiang Lv Xingyi Zhang;Modeste Venin Mendieev Nitou;Wenjun Li;Zhao Wan;Longfei Liu;Zhaohui Luo;Sohail Muhammad;Wu Qin;Liang An;Yinghua Niu;Weiqiang Lv

作者机构：Yangtze Delta Region Institute(Huzhou)University of Electronic Science and Technology of ChinaHuzhou 313001China School of physicsUniversity of electronic Science and Technology of ChinaChengdu 611731China X-Energy Systems Co.Ltd.Jiaxing 314000China National Engineering Laboratory for Biomass Power Generation EquipmentSchool of Renewable Energy EngineeringNorth China Electric Power UniversityBeijing 102206China Department of Mechanical Engineeringthe Hong Kong Polytechnic UniversityHong KongChina Zhejiang Humo Polishing Grinder Manufacture Co.Ltd.Huzhou 313012China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2023年第34卷第11期

页      面：342-345页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.51972043 and 52102212) the Sichuan-Hong Kong Collaborative Research Fund(No.2021YFH0184) the Foundation of Yangtze Delta Region Institute(Huzhou)of UESTC,China(Nos.U03210010 and U03210028) Huzhou Science and Technology Special Representative Project(No.2021KT54) 

主　　题：Solid polymer electrolyte Lithiated perfluorinated sulfonic acid Polyvinylidene fluoride Solid-state battery Anion containing polymer 

摘      要：Li-ion batteries with solid polymer electrolytes(SPEs)are safer than conventional liquid electrolytes due to the absence of highly flammable liquid ***,their performance is limited by the poor Li+transport in SPEs at room ***-containing polymer-chains incorporated SPEs(ASPEs)are therefore developed to enhance Li^(+) diffusion ***,we propose a novel and feasible strategy to incorporate the anion-containing polymer-chains,such as lithiated perfluorinated sulfonic acid(PFSA),into polyvinylidene fluoride(PVDF)polymer-based *** immobile anion groups from the PFSA-chains impede the migration of mobile anion groups dissociated from the Li *** transference number is thus raised from∼0.3 to 0.52 with the introduction of anion-containing polymer-chains into *** electrostatic repulsion among anion-containing chains also reduces the close chain stacking and brings 159%increase in the ionic conductivity to 0.83×10^(−3) S/cm at 30℃ in contrast with the pure PVDF-based *** addition,LiFeO_(4)/Li batteries with ASPEs exhibit 55%capacity boost at 0.5 C in contrast to the capacity of batteries with pure-PVDF SPEs,and also offer more than 1000 charge/discharge *** research findings potentially offer a facile strategy to design thermal stable SPEs with superior Li^(+) transport behaviors towards developing high-performance SPEs-based batteries.