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

doi:10.13208/j.electrochem.130722

电化学 >

2014 , Vol. 20 >Issue 2: 101 - 104

DOI: https://doi.org/10.13208/j.electrochem.130722

研究论文

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

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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

网络出版日期: 2014-04-17

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

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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

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State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen 361005, Fujian, China

Received date: 2013-07-22

Revised date: 2013-08-01

Online published: 2014-04-17

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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

本文引用格式

蔡默超 , 蔡森荣 , 郑明森 , 董全峰 . 纳米CoFe₂O₄/GNS负极制备及其电化学性能研究[J]. 电化学, 2014 , 20(2) : 101 -104 . DOI: 10.13208/j.electrochem.130722

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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