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Preparation and characterization of core–shell structure Fe3O4/C nanoparticles with unique stability and high electrochemical performance for lithium-ion battery anode material
Authors:Yudai Huang  Zhifang Dong  Dianzeng Jia  Zaiping Guo  Won Il Cho
Affiliation:aKey Laboratory of Clean Energy Material and Technology of Ministry of Education, People's Republic of China;bKey Laboratory of Advanced Functional Materials of Autonomous Region, People's Republic of China;cInstitute of Applied Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, People's Republic of China;dInstitute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW 2522, Australia;eEnergy Storage Research Center, Korea Institute of Science and Technology, 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Republic of Korea
Abstract:Core–shell structure carbon coating Fe3O4 nanoparticles are prepared by a two-step method. The crystalline structure and the electrochemical performance of the prepared samples are investigated. The results indicate that a uniform and continuous carbon layer is formed on the surface of Fe3O4 nanoparticles. The core–shell structure Fe3O4/C nanoparticles show a high initial discharge capacity of 1546 mAh g−1 and a specific stable discharge capacity of about 800 mAh g−1 at 0.5 C with no noticeable capacity fading up to 100 cycles.
Keywords:Core&ndash  shell structure  Carbon coating  Fe3O4 nanoparticles  Lithium-ion battery  Anode material
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