Manufacturing N,O-carboxymethyl chitosan-reduced graphene oxide under freeze-dying for performance improvement of Li-S battery  

作　　者：Zhibin Jiang Lujie Jin Xiying Jian Jinxia Huang Hongshuai Wang Binhong Wu Kang Wang Ling Chen Youyong Li Xiang Liu Weishan Li 

机构地区：[1]School of Chemistry,Engineering Research Center of MTEES(Ministry of Education),Research Center of BMET(Guangdong Province),Engineering Laboratory of OFMHEB(Guangdong Province),Key Laboratory of ETESPG(GHEI),and Innovative Platform for ITBMD(Guangzhou Municipality),South China Normal University,Guangzhou,People’s Republic of China [2]Shenzhen School Affiliated to Sun Yat-Sen University,Shenzhen,People’s Republic of China [3]Institute of Functional Nano&Soft Materials(FUNSOM),Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices,Soochow University,Suzhou,People’s Republic of China [4]Macao Institute of Materials Science and Engineering,Macao University of Science and Technology,Macao SAR,People’s Republic of China [5]College of Energy Science and Engineering,Nanjing Tech University,Nanjing,People’s Republic of China

出　　处：《International Journal of Extreme Manufacturing》2023年第1期282-305,共24页极端制造（英文）

基　　金：supported by the National Key Research and Development Project (Grant No. 2018YFE0124800);the National Key Research Program of China (Grant No.2022YFA1503100);Science and Technology Project of Jiangsu Province (Grant No. BZ2020011);National Natural Science Foundation of China (Grants No. 22173067);the Science and Technology Development Fund;Macao SAR(FDCT No. 0052/2021/A);Collaborative Innovation Center of Suzhou Nano Science&Technology;the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD);the 111 Project;Joint International Research Laboratory of Carbon-Based Functional Materials and Devices

摘　　要：Lithium-sulfur(Li-S) batteries can provide far higher energy density than currently commercialized lithium ion batteries, but challenges remain before it they are used in practice.One of the challenges is the shuttle effect that originates from soluble intermediates, like lithium polysulfides. To address this issue, we report a novel laminar composite, N,O-carboxymethyl chitosan-reduced graphene oxide(CC-rGO), which is manufactured via the self-assembly of CC onto GO and subsequent reduction of GO under an extreme condition of 1 Pa and-50°C. The synthesized laminar CC-rGO composite is mixed with acetylene black(AB) and coated on a commercial polypropylene(PP) membrane, resulting in a separator(CC-rGO/AB/PP) that can not only completely suppress the polysulfides penetration, but also can accelerate the lithium ion transportation, providing a Li-S battery with excellent cyclic stability and rate capability. As confirmed by theoretic simulations, this unique feature of CC-rGO is attributed to its strong repulsive interaction to polysulfide anions and its benefit for fast lithium ion transportation through the paths paved by the heteroatoms in CC.

关 键 词：composite manufacturing N O-carboxymethyl chitosan reduced graphene oxide SEPARATOR lithium-sulfur battery 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ127.11[化学工程—无机化工]