New redox-mediating polymer binder for enhancing performance of Li-S batteries

作     者：Soochan Kim Misuk Cho Chalathorn Chanthad Youngkwan Lee Soochan Kim;Misuk Cho;Chalathorn Chanthad;Youngkwan Lee

作者机构：School of Chemical EngineeringSungkyunkwan UniversitySuwon 16419Republic of Korea National Nanotechnology Center(NANOTEC)National Science and Technology Development Agency(NSTDA)Pathum Thani 12120Thailand 

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

年 卷 期：2020年第29卷第5期

页      面：154-161页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：the Basic Science Research Program of the National Research Foundation of Korea(NRF)funded by the Ministry of Science and ICT(NRF-2019R1A2C1003594 and NRF-2019R1A2C1003551) the Ministry of Education(NRF-2016R1D1A1B03930806) 

主　　题：Lithium-sulfur battery Redox mediator BPI Binder Cyclic stability 

摘      要：Lithium-sulfur(Li-S)batteries are promising energy storage devices owing to their high energy density and the low cost of ***,they are still far from being applied commercially because of the detrimental capacity fade caused by the dissolution of lithium polysulfide(LPS)in liquid *** this study,we introduced a new polymer binder having a redox-mediating function that assists in the reduction of soluble LPS to Li2S at the cathode to suppress the shuttle effect as well as enhance sulfur *** amine group containing benzo(ghi)perylene imide(BPI)was synthesized and grafted onto poly(acrylic acid)to produce a redox-mediating polymer *** Li-S cell fabricated using the new redox-mediating polymer binder demonstrated a capacity decay retention of 0.036%per cycle up to 500 cycles at 0.5 C with a coulombic efficiency of 98%.