Hierarchical structured graphenemetal oxideporous carbon composites as anode materials for lithium-ion batteries》.pdf

Materials Research Bulletin 73 (2016) 102–110 Contents lists available at ScienceDirect Materials Research Bulletin journa l homepage: /locate/matresbu Hierarchical structured graphene/metal oxide/porous carbon composites as anode materials for lithium-ion batteries a a,* b c Rong Guo , Wenbo Yue , Yu Ren , Wuzong Zhou a Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, PR China b National Institute of Clean-and-Low-Carbon Energy, Beijing 102209, PR China c School of Chemistry, University of St. Andrews, St. Andrews, Fite KY16 9ST, United Kingdom A R T I C L E I N F O A B S T R A C T Article history: As a novel anode material for lithium-ion batteries, CeO2 displays imperceptible volumetric and Received 12 May 2015 morphological changes during the lithium insertion and extraction processes, and thereby exhibits good Accepted 22 August 2015 cycling stability. However, the low theoretical capacity and poor electronic conductivity of CeO2 hinder Available online 28 August 2015 its practical application. In contrast, Co O possesses high theoretical capacity, but undergoes huge 3 4 volume change during cycling. To overcome these issues, CeO and Co O nanoparticles are formed inside