Enhanced cycle performance of Li/S battery with the reduced graphene oxide/activated carbon functional interlayer

作     者：Haipeng Li Liancheng Sun Yongguang Zhang Taizhe Tan Gongkai Wang Zhumabay Bakenov 

作者机构：School of Materials Science&EngineeringResearch Institute for Energy Equipment MaterialsHebei University of TechnologyTianjin 300130China Synergy Innovation Institute of GDUTHeyuan 517000GuangdongChina Nazarbayev UniversityInstitute of Batteries LLC53 Kabanbay Batyr AvenueAstana 010000Kazakhstan 

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

年 卷 期：2017年第26卷第6期

页      面：1276-1281页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0827[工学-核科学与技术] 0703[理学-化学] 

基　　金：financial support from the National Natural Science Foundation of China(grant no.21406052 the Program for the Outstanding Young Talents of Hebei Province(grant no.BJ2014010) the Scientific Research Foundation for Selected Overseas Chinese Scholars,Ministry of Human Resources and Social Security of China(grant no.CG2015003002) 

主　　题：Lithium/sulfur battery Shuttle effect Functional interlayer Reduced graphene oxide/activated carbon composite 

摘      要：The high-energy lithium/sulfur(Li/S) battery has become a very popular topic of research in recent years due to its high theoretical capacity of 1672 m Ah/g. However, the polysulfide shuttle effect remains of great concern with a great number of publications dedicated to its mitigation. In this contribution, a three-dimensional(3D) reduced graphene oxide/activated carbon(RGO/AC) film, synthesized by a simple hydrothermal method and convenient mechanical pressing, is sandwiched between the separator and the sulfur-based cathode, acting as a functional interlayer to capture and trap polysulfide species. Consequently, the Li/S cell with this interlayer shows an impressive initial discharge capacity of 1078 m Ah/g and a reversible capacity of 655 m Ah/g even after 100 cycles. The RGO/AC interlayer impedes the movement of polysulfide while providing unimpeded channels for lithium ion mass transfer. Therefore, the RGO/AC interlayer with a well-designed structure represents strong potential for high-performance Li/S batteries.