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Reticulated carbon nanofiber-encapsulated SnO2 hollow spheres as high performance anode material for lithium-ion
Ya Chen1, Lingling Wang1, Bozhi Yang1
1Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), 100083, China. minx@cugb.edu.cn.
Abstract:
A novel anode material comprising SnO2 hollow spheres encapsulated within carbon nanofibers (SnO2@CF) is presented for LIBs. The hollow sphere architecture accommodates inward volume changes, while the carbon nanofiber shell mitigates outward volume expansion and enhances electrical conductivity. This unique structure enables SnO2@CF to achieve superior electrochemical performance, delivering a high reversible capacity of 1304.3 mA h g-1 after 250 cycles at 0.2C and 548.8 mA h g-1 after 1000 cycles at 5C.
