期刊
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷 15, 期 9, 页码 2005-2011出版社
SPRINGER
DOI: 10.1007/s10008-010-1222-6
关键词
Nickel oxide (NiO) nanotubes; AAO template; Supercapacitors
资金
- National Science Foundation of China [21003015]
- Natural Science Foundation of Jiangsu Province [BK2008543]
- Fine Petroleum Chemical Key Laboratories Foundation of Jiangsu Province [KF0701]
Nickel oxide (NiO) nanotubes for supercapacitors were synthesized by chemically depositing nickel hydroxide in anodic aluminum oxide templates and thermally annealing at 360 A degrees C. The synthesized nanotubes have been characterized by scanning electron microscopy, transmission electron microscopy, and X-ray diffraction. The capacitive behavior of the NiO nanotubes was investigated by cyclic voltammetry, galvanostatic charge-discharge experiment, and electrochemical impedance spectroscopy in 6 M KOH. The electrochemical data demonstrate that the NiO nanotubes display good capacitive behavior with a specific capacitance of 266 F g(-1) at a current density of 0.1 A g(-1) and excellent specific capacitance retention of ca. 93% after 1,000 continuous charge-discharge cycles, indicating that the NiO nanotubes can become promising electroactive materials for supercapacitor.
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