Capacitive characteristics of Ni-Co oxide nano-composite via coordination homogeneous co-precipitation method

被引:20
作者
Deng, Jing-Jing [1 ]
Deng, Jian-Cheng [1 ]
Liu, Zi-Ling [1 ]
Deng, Hui-Ren [1 ]
Liu, Bo [1 ]
机构
[1] Xiangtan Univ, Coll Chem, Minist Educ, Key Lab Environm Friendly Chem & Applicat, Xiangtan 411105, Hunan, Peoples R China
关键词
MESOPOROUS NICKEL-OXIDE; ELECTRODE MATERIAL; ELECTROCHEMICAL CAPACITORS; SUPERCAPACITOR APPLICATIONS; FILMS; PERFORMANCE; MNO2;
D O I
10.1007/s10853-009-3373-3
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A series of Ni-Co oxide nano-composites were prepared by thermal decomposition of the precursors obtained via coordination homogeneous co-precipitation method. Thermogravimetric analysis (TGA), powder X-ray diffraction (XRD), and transition electron microscopy (TEM) tests were applied to investigate the thermal behavior, crystalline. and morphology of the Ni-Co oxide composites. The electrochemical properties of Ni-Co oxide electrodes were evaluated by cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance measurements. Results showed that the calcination temperature had great effect on morphology and specific capacitance of product. The effect of the molar ratios of Ni2+/Co2+ in the reaction system on the electrochemical properties of Ni-Co oxide electrodes was also discussed.
引用
收藏
页码:2828 / 2835
页数:8
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