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电化学(中英文) ›› 2014, Vol. 20 ›› Issue (2): 101-104.  doi: 10.13208/j.electrochem.130722

• 研究论文 • 上一篇    下一篇

纳米CoFe2O4/GNS负极制备及其电化学性能研究

蔡默超,蔡森荣,郑明森,董全峰*   

  1. 厦门大学 固体表面物理化学国家重点实验室,化学化工学院化学系,福建 厦门 361005
  • 收稿日期:2013-07-22 修回日期:2013-08-01 出版日期:2014-04-28 发布日期:2014-04-17
  • 通讯作者: 董全峰 E-mail:qfdong@xmu.edu.cn
  • 基金资助:

    国家自然科学基金项目(No. 200933005,No. 21021002)、国家973计划项目(No. 2009CB220102)、厦门市纯电动汽车重大专项(Ⅰ期)(No. 3502Z20121002)和国家基础科学人才培养基金项目(No. J1210014)资助

Preparation and Electrochemical Performances of CoFe2O4/GNS Nanocomposites as Anode Material for Lithium Ion Battery

CAI Mo-chao, CAI Sen-rong, ZHENG Ming-sen, DONG Quan-feng*   

  1. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen 361005, Fujian, China
  • Received:2013-07-22 Revised:2013-08-01 Published:2014-04-28 Online:2014-04-17
  • Contact: DONG Quan-feng E-mail:qfdong@xmu.edu.cn

摘要: 采用溶剂热法一步合成纳米尺寸CoFe2O4/GNS复合材料(直径约为15 nm),其颗粒尺寸均一,且均匀分散于石墨烯表面. 电化学测试结果表明,该复合物电极具有良好的循环和倍率性能,500 mA·g-1电流密度下100周期循环比容量稳定在709 mAh·g-1, 容量保持率高达95.8%;2 A·g-1电流密度,其比容量仍高达482 mAh·g-1.

关键词: 溶剂热法, CoFe2O4, 负极材料, 纳米材料

Abstract: The CoFe2O4/GNS was synthesized by a simple one-pot solvothermal method. The results obtained by X-ray diffraction (XRD) and transmission electron microscopy (TEM) showed that the CoFe2O4 particles with sizes of 15 nm dispersed on the surface of graphene uniformly. Electrochemical tests indicated that the CoFe2O4/GNS nanocomposite exhibited excellent cyclic stability with almost 95.8% capacity retention after 100 cycles at the current density of 500 mA·g-1 and delivered a high reversible capacity of 482 mAh·g-1 at the current density of 2 A·g-1.

Key words: solvothermal method, CoFe2O4, anode material, nanoparticle

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