Facile synthesis of CoFe2O4 nanoparticles anchored on graphene sheets for enhanced performance of lithium ion battery |
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Authors: | Wen Qi Pei Li Ying Wu Hong Zeng Liting Hou Chunjiang Kuang Pei Yao and Shaoxiong Zhou |
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Institution: | Beijing Key Laboratory of Energy Nanomaterials, Advance Technology & Materials Co., Ltd, China Iron & steel Research Institute Group, Beijing 100081, China;School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;Beijing Key Laboratory of Energy Nanomaterials, Advance Technology & Materials Co., Ltd, China Iron & steel Research Institute Group, Beijing 100081, China;Beijing Key Laboratory of Energy Nanomaterials, Advance Technology & Materials Co., Ltd, China Iron & steel Research Institute Group, Beijing 100081, China;Beijing Key Laboratory of Energy Nanomaterials, Advance Technology & Materials Co., Ltd, China Iron & steel Research Institute Group, Beijing 100081, China;Beijing Key Laboratory of Energy Nanomaterials, Advance Technology & Materials Co., Ltd, China Iron & steel Research Institute Group, Beijing 100081, China;School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;Beijing Key Laboratory of Energy Nanomaterials, Advance Technology & Materials Co., Ltd, China Iron & steel Research Institute Group, Beijing 100081, China |
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Abstract: | Recently, metal oxides as high capacity anode materials had been investigated for lithium ion batteries.However, the fast capacity fading upon cycling leaded poor durability, which hindered their application as higher energy density of lithium ion battery. In this paper, a nanostructured nanocomposite with graphene supported CoFe_2O_4 nanoparticles(NPs) was prepared via simple hydrothermal reaction. The uniform CoFe_2O_4 NPs were anchored on graphene sheets, which brought a good performance on cyclability. Combined with the optimization of graphene content, the anode delivered a better capacity retention of 944 m A h g~(-1)over 50 cycles at current density of 100 m A g~(-1)and the good reversible capacity as 990 m A h g~(-1)when the rate returned from 5 A g~(-1)to 0.1 A g~(-1)after 60 cycles. The present work provided a desired structure for conversion anode materials or other electrode materials of large volume change. |
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Keywords: | Graphene-based anode Cobalt ferrites Lithium ion battery |
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