P(VDF-HFP)-poly(sulfur-1,3-diisopropenylbenzene) functional polymer electrolyte for lithium–sulfur batteries

作     者：Jiang-Hui Jiang An-Bang Wang Wei-Kun Wang Zhao-Qing Jin Li-Zhen Fan Jiang-Hui Jiang;An-Bang Wang;Wei-Kun Wang;Zhao-Qing Jin;Li-Zhen Fan

作者机构：Beijing Advanced Innovation Center for Materials Genome EngineeringInstitute of Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Military Power Sources Research and Development CenterResearch Institute of Chemical DefenseBeijing 100191China 

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

年 卷 期：2020年第29卷第7期

页      面：114-122,I0004页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：Financial supports from the National Natural Science Foundation of China(51532002 and 51872027) Beijing Natural Science Foundation(L172023) National Basic Research Program of China(2016YFA0202500,2017YFE0113500,and 2018YFB0104300) 

主　　题：Organosulfide cathode Functional polymer electrolyte Stable SEI layer Quasi-solid-state Li–S batteries 

摘      要：Lithium–sulfur(Li–S)battery as a high-energy density electrochemical energy storage system has attracted many researchers’***,the shuttle effect of Li–S batteries and the challenges associated with lithium metal anode caused poor cycle *** this work,the organosulfide poly(sulfur-1,3-diisopropenylbenzene)(PSD)was prepared as cathode material and additive of P(VDFHFP)polymer electrolyte(P(VDF-HFP)).It was verified that P(VDF-HFP)polymer electrolyte with 10%PSD(P(VDF-HFP)-10%PSD)showed a higher ionic conductivities than that of liquid electrolyte up to2.27×10-3 S cm-1 at room *** quasi-solid-state Li-S batteries fabricated with organosulfide cathode material PSD and P(VDF-HFP)based functional polymer electrolyte delivered good cycling stability(780 m Ah g-1 after 200 th cycle at 0.1 C)and rate performance(613 m Ah g-1 at 1 C).The good cycling performance could be attributed to the synergistic effect of components,including the interaction between polysulfides and polymer main chain in the organosulfide cathode,the sustained organic/inorganic hybrid stable SEI layer formed by polymer electrolyte additive PSD,the improved cathode/electrolyte interface and the good affinity between P(VDF-HFP)based functional polymer electrolyte and Li metal *** strategy herein may provide a new route to fabricate high-performance Li–S batteries through the organosulfide cathode and functional polymer electrolyte.