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Effect of Pt nanostructures on the electrochemical properties of Co3O4 electrodes for micro-electrochemical capacitors
- Authors
- Ahn, Hyo-Jin; Seong, Tae-Yeon
- Issue Date
- 10-Jun-2009
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Electrode materials; Nanostructured materials; Eelectrochemical reactions
- Citation
- JOURNAL OF ALLOYS AND COMPOUNDS, v.478, no.1-2, pp.L8 - L11
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ALLOYS AND COMPOUNDS
- Volume
- 478
- Number
- 1-2
- Start Page
- L8
- End Page
- L11
- ISSN
- 0925-8388
- Abstract
- We report on the formation and electrochemical properties of Co3O4/Pt nanocomposite electrodes, which were fabricated by an RF magnetron co-sputtering system, for micro-electrochemical capacitors. High-resolution electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy examinations are performed to characterize the structural and chemical properties of the Co3O4/Pt nanocomposite electrodes. It is shown that the Co3O4/Pt6020 nanocomposite electrodes where RF powers of 60 and 20 W were applied to Co3O4 and Pt targets, respectively, give capacitance of 391.6 F/cm(3) at 100 mV/s along with superb high-rate performance, which is much higher that those of Co3O4 only and other nanocomposite electrodes. The improvement is explained in terms of the formation of Co3O4-Pt combined nanostructures and their good electrical conductivity. (C) 2008 Elsevier B.V. All rights reserved.
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Related Researcher
- SEONG, TAE YEON
- College of Engineering (Department of Materials Science and Engineering)