Journal
SYNTHETIC METALS
Volume 160, Issue 11-12, Pages 1299-1302Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2010.04.003
Keywords
Cobalt oxides; Thin films; Chemical synthesis; Energy-storage
Funding
- Korean Federation of Science and Technology Societies (KOFST), Korea
- Ministry of Science and Technology of Korea
- Department of Science and Technology (DST), New Delhi [SR/S2/CMP-82/2006]
- Ajou University, Suwon, Korea [20072650]
- Ministry of Education, Science and technology
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Cobalt oxide thin film electrode was grown on copper substrate from an aqueous alkaline bath containing cobalt chloride as a cobalt source by adopting simple and inexpensive chemical deposition method and characterized for structural and morphological studies. The supercapacitive properties of cobalt oxide electrode were studied in aqueous KOH electrolyte solution. The effect of electrolyte concentration on specific capacitance and the stability of cobalt oxide electrode were studied. The highest specific capacitance achieved with cobalt oxide films was 118 F g(-1). The specific energy (E), specific power (P) and coulomb efficiency (eta%) were 5.8 Wh kg(-1), 0.33 kW kg(-1) and 93.44%, respectively. (C) 2010 Elsevier B.V. All rights reserved.
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