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Effect of Pt nanostructures on the electrochemical properties of Co3O4 electrodes for micro-electrochemical capacitors

Authors
Ahn, Hyo-JinSeong, Tae-Yeon
Issue Date
10-6월-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
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/119831
DOI
10.1016/j.jallcom.2008.11.144
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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SEONG, TAE YEON
공과대학 (신소재공학부)
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