期刊
BULLETIN OF MATERIALS SCIENCE
卷 42, 期 6, 页码 -出版社
INDIAN ACAD SCIENCES
DOI: 10.1007/s12034-019-1961-7
关键词
Nickel oxide; supercapacitor; ionic liquid
资金
- UGC
- Brain Pool Program through the National Research Foundation (NRF) of Korea - Ministry of Science and ICT [NRF-2018H1D3A2002154]
- Human Resources Development Grant from the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korean Government Ministry of Trade, Industry and Energy [20164030201310]
- National Research Foundation of Korea [2018H1D3A2002154] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
NiO nanosheets were deposited on the surface of a stainless steel substrate by using a facile, environmentally friendly, reflux deposition approach for supercapacitor (SC) applications. X-ray diffraction patterns and field emission scanning electron microscopy images revealed the formation of a face centred cubic crystal structure with a uniform, compact, smoothly ordered nanosheet like structure. This study focuses on the electrochemical supercapacitive properties of NiO nanosheets with respect to cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy techniques in a 1-(2',3'-dihydroxypropyl)-3-methylimidazolium hydroxide [DHPMIM][OH] ionic liquid (IL) as an electrolyte. The electrochemical study revealed that NiO (0.3 M) showed a high-specific capacitance of 205.5 F g(-1) and an excellent cycling stability (80% specific capacitance retention after 5000 cycles) in the [DHPMIM][OH] IL electrolyte. Thus, the result showed that NiO nanosheets act as an active electrode material hold for SCs.
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