Hybrid materials of graphene anchored with CoFe₂O₄ for the anode in sodium-ion batteries

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• 作者：Jian-Min Feng ; Xia-Hua Zhong ; Gui-Zhi Wang ; Lei Dong…
• 刊名：Journal of Materials Science
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：52
• 期：6
• 页码：3124-3132
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics;
• 出版者：Springer US
• ISSN：1573-4803
• 卷排序：52

文摘

Hybrid materials of CoFe₂O₄ nanoparticles anchored on graphene prepared by a facile hydrothermal process was developed to be anode material for sodium-ion battery. The hybrid nano-structure of CoFe₂O₄/graphene not only could be useful to buffer electrode volume accompanying with Na+ insertion–extraction, but also could be beneficial to improve electrode electric conductivity and further keep graphene sheet separated to improve ion diffusion rate. Electrochemical measurements showed that the hybrid material anode displayed an excellent performance with a large reversible capacity of 330 mAh g−1 after 75 cycle times and a satisfactory rate capability of 170 mAh g−1 at 1 A g−1.