Origin of Excellent Charge Storage Properties of Defective Tin Disulphide in Magnesium/Lithium-Ion Hybrid Batteries

作     者：Xin Fan Mike Tebyetekerwa Yilan Wu Rohit Ranganathan Gaddam Xiu Song Zhao Xin Fan;Mike Tebyetekerwa;Yilan Wu;Rohit Ranganathan Gaddam;Xiu Song Zhao

作者机构：School of Chemical EngineeringThe University of QueenslandSt LuciaBrisbaneQLD 4072Australia School of Material Science and TechnologyNorth University of ChinaTaiyuan 030051ShanxiPeople’s Republic of China Dow Centre for Sustainable Engineering InnovationSchool of Chemical EngineeringThe University of QueenslandSt LuciaBrisbaneQLD 4072Australia Department of Chemical EngineeringIndian Institute of Science Education and ResearchBhopalIndia 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2022年第14卷第11期

页      面：87-106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：supported by The Australian Research Council (Project ARC FL170100101) the Research Project Supported by Shanxi Scholarship Council of China (2021-128) Supported by the Fundamental Research Program of Shanxi Province (20210302124356) 

主　　题：Defects Tin disulphide Magnesium/lithium-ion hybrid batteries 2D materials 

摘      要：Lithium-ion batteries(LIBs)are excellent electrochemical energy sources,albeit with existing challenges,including high costs and safety ***-ion batteries(MIBs)are one of the potential ***,the performance of MIBs is poor due to their sluggish solid-state Mg^(2+) diffusion kinetics and severe electrode *** magnesium-ion/lithium-ion(Mg^(2+)/Li^(+))hybrid batteries(MLHBs)with Mg^(2+) and Li+as the charge carriers create a synergy between LIBs and MIBs with significantly improved charge transport kinetics and reliable safety ***,MLHBs are yet to reach a reasonable electrochemical performance as *** work reports a composite electrode material with highly defective two-dimensional(2D)tin sulphide nanosheets(SnS_(x))encapsulated in three-dimensional(3D)holey graphene foams(HGF)(SnS_(x)/HGF),which exhibits a specific capacity as high as 600 mAh g^(−1) at 50 mA g^(−1) and a compelling specific energy density of~330 Wh kg^(−1).The excellent electrochemical performance surpasses previously reported hybrid battery systems based on intercalation-type cathode materials under comparable *** role played by the defects in the SnS_(x)/HGF composite is studied to understand the origin of the observed excellent electrochemical *** is found that it is closely related to the defect structure in SnS_(x),which offers percolation pathways for efficient ion transport and increased internal surface area assessable to the charge *** defective sites also absorb structural stress caused by Mg^(2+) and Li+*** work is an important step towards realizing high-capacity cathode materials with fast charge transport kinetics for hybrid batteries.