Electrodeposition of Co(OH)2 Film and its Conversion into Co3O4 Film for Supercapacitors

被引：0
|
作者：
Li, Yanhua [1 ,2 ]
Chen, Qiyuan [1 ]
机构：
[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
[2] Changsha Aeronaut Vocat & Tech Coll, Dept Chem Engn & Informat Engn, Changsha 410019, Hunan, Peoples R China
来源：
ASIAN JOURNAL OF CHEMISTRY | 2012年 / 24卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Supercapacitors; Co3O4; film; Electrodeposition; Capacitive properties; COBALT HYDROXIDE; ELECTROCHEMICAL CAPACITORS; THIN-FILM; PERFORMANCE; DEPOSITION; BEHAVIOR; CARBON;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Co(OH)(2) film is prepared by electrodeposition and then Co3O4 film is obtained by calcining Co(OH)(2) film. Capacitive properties of these films are measured. The results show that the specific capacitance of Co(OH)(2) film, Co3O4 film obtained by calcining at 200 and 300 degrees C at the current density of 0.2 A g(-1) are 153.4, 150.4 and 129.1 F g(-1), respectively. The specific capacitance retention ratio of three film electrodes is above 97 % at the current density range from 0.2-1.0 g(-1). The specific capacitance retention ratio of above 88 % is obtained in three film electrodes when the current density increases from 0.2-2.0 A g(-1). These values are higher than those of Co3O4 film prepared by chemical bath deposition.
引用
收藏
页码：4736 / 4740
页数：5
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