物理化学学报 >> 2012, Vol. 28 >> Issue (04): 837-842.doi: 10.3866/PKU.WHXB201202074

电化学和新能源 上一篇    下一篇

有序介孔碳负载NiCo2O4电极的制备及其超电容性能

车倩, 张方, 张校刚, 卢向军, 丁兵, 朱佳佳   

  1. 南京航空航天大学材料科学与技术学院, 南京 210016
  • 收稿日期:2011-10-31 修回日期:2012-02-01 发布日期:2012-03-21
  • 通讯作者: 张校刚 E-mail:azhangxg@163.com
  • 基金资助:

    国家自然科学基金(20873064), 江苏省自然科学基金(BK2011030)及高等学校博士学科点专项科研基金(20060287026)资助项目

Preparation of Ordered Mesoporous Carbon/NiCo2O4 Electrode and Its Electrochemical Capacitive Behavior

CHE Qian, ZHANG Fang, ZHANG Xiao-Gang, LU Xiang-Jun, DING Bing, ZHU Jia-Jia   

  1. College of Material Science & Engneering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
  • Received:2011-10-31 Revised:2012-02-01 Published:2012-03-21
  • Contact: ZHANG Xiao-Gang E-mail:azhangxg@163.com
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20873064), Natural Science Foundation of Jiangsu Province, China (BK2011030), and Specialized Research Fund for the Doctoral Program of Higher Education of China (20060287026).

摘要: 以有序介孔碳(OMC)为载体, 采用共沉淀法制备了OMC/NiCo2O4复合物. 用X射线衍射(XRD)、傅里叶变换红外(FT-IR)光谱和透射电镜(TEM)研究其结构与形貌, 发现NiCo2O4纳米颗粒均匀地负载在有序介孔碳上. 循环伏安和恒流充放电测试表明, NiCo2O4质量分数为40%时, 在1 A·g-1的电流密度下, 复合物电极的比电容可以达到577.0 F·g-1, 电流密度为8 A·g-1时, 比电容可以达到470.8 F·g-1, 并具有良好的循环稳定性. 在2A·g-1的电流密度下, 经过2000次循环后, 比电容还可达到508.4 F·g-1, 电容保持率为92.7%.

关键词: 超级电容器, 有序介孔碳, NiCo2O4, 共沉淀法

Abstract: OMC/NiCo2O4 composite was prepared by co-precipitation with ordered mesoporous carbon (OMC) as a support. The crystalline structure and morphology of the composite were investigated by X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, and transmission electron microscopy (TEM). TEM images showed that NiCo2O4 was uniformly coated on the OMC. Cyclic voltammetry and galvanostatic charge-discharge were used to investigate the electrochemical performance of the OMC/ NiCo2O4 composite. The specific capacitances of the OMC/NiCo2O4 composite with a mass fraction of 40% NiCo2O4 were 577.0 F·g-1 at a current density of 1 A·g-1 and 470.8 F·g-1 at 8 A·g-1. The specific capacitance remains at 508.4 F·g-1 after 2000 cycles at a current density of 2 A·g-1, with a capacitance retention of 92.7%.

Key words: Supercapacitor, Ordered mesoporous carbon, NiCo2O4, Co-precipitation method

MSC2000: 

  • O646