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/cm3 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.
Original language | English |
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Pages (from-to) | L8-L11 |
Journal | Journal of Alloys and Compounds |
Volume | 478 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2009 Jun 10 |
Keywords
- Eelectrochemical reactions
- Electrode materials
- Nanostructured materials
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry