SnO_(2)/Graphene Composite with High Lithium Storage Capability for Lithium Rechargeable Batteries

作     者：Haegyeom Kim Sung-Wook Kim Young-Uk Park Hyeokjo Gwon Dong-Hwa Seo Yuhee Kim Kisuk Kang 

作者机构：Graduate School of EnergyEnvironmentWaterand SustainabilityKorea Advanced Instituteof Science and Technology(KAIST)335 GwahangnoYuseong-guDaejeon 305-701Republic of Korea Department of Materials Science and EngineeringKAIST335 GwahangnoYuseong-guDaejeon 305-701Republic of Korea KAIST Institute for Eco-energyNanocenturyKAIST335 GwahangnoYuseong-guDaejeon 305-701Republic of Korea Korea Institute of Science and Technology(KIST)39-1 Hawolgok-dongWolsong-gil 5Seongbuk-guSeoul 136-791Republic of Korea 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2010年第3卷第11期

页      面：813-821页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：This work was supported by a grant from the Korea Science and Engineering Foundation(KOSEF)(WCU program,No.31-2008-000-10055-0) a grant from the National Research Foundation of Korea(No.NRF-2009-0094219)funded by the Ministry of Education and Science and Technology(MEST) the Energy Resources Technology R&D program(No.20092020100040)under the Ministry of Knowledge Economy 

主　　题：Graphene SnO_(2) surface charge nanocomposite rechargeable batteries lithium 

摘      要：SnO_(2)/graphene nanocomposites have been fabricated by a simple chemical *** the fabrication process,the control of surface charge causes echinoid-like SnO_(2)nanoparticles to be formed and uniformly decorated on the *** electrostatic attraction between a graphene nanosheet(GNS)and the echinoid-like SnO_(2)particles under controlled pH creates a unique nanostructure in which extremely small SnO_(2)particles are uniformly dispersed on the *** SnO_(2)/graphene nanocomposite has been shown to perform as a high capacity anode with good cycling behavior in lithium rechargeable *** anode retained a reversible capacity of 634 mA·h·g^(–1)with a coulombic efficiency of 98%after 50 *** high reversibility can be attributed to the mechanical buffering by the GNS against the large volume change of SnO_(2)during delithiation/lithiation ***,the power capability is significantly enhanced due to the nanostructure,which enables facile electron transport through the GNS and fast delithiation/lithiation reactions within the echinoid-like nano-SnO_(2).The route suggested here for the fabrication of SnO_(2)/graphene hybrid materials is a simple economical route for the preparation of other graphene-based hybrid materials which can be employed in many different fields.