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In relation to this article, we declare that there is no conflict of interest.
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Received March 8, 2001
Accepted June 8, 2001
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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The Effects of Cu-doping in V2O5 Thin Film Cathode for Microbattery

Battery and Fuel Cell Research Center, Korea Institute of Science and Technology, P.O.Box 131,Cheongryang, Seoul 130-650, Korea 1Thin Film Technology Research Center, Korea Institute of Science and Technology, P.O.Box 131,Cheongryang, Seoul 130-650, Korea
scnam@kist.re.kr
Korean Journal of Chemical Engineering, September 2001, 18(5), 673-678(6), 10.1007/BF02706385
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Abstract

Copper-doped vanadium oxide (CuxV2O5) thin film cathode materials for a thin film microbattery have been prepared by DC reactive magnetron co-sputtering with O2/Ar ratio of 10/90 and compared with pure V2O5 thin film. The film structures have been characterized by x-ray diffraction analysis, transmission electron microscopy, Auger electron spectroscopy and X-ray photoelectron spectroscopy. X-ray diffraction and TEM studies show that the Cu(x)V2O5 film was amorphous and phenomenal behavior of copper present in thin film with substrate has been explained by thermodynamical model. Copper doping helps to increase the thickness of the film more than 1 micrometer resulting increase of total capacity. Cycling behavior of the Cu(x)V2O5/Lipon/Li configuration cell system was beyond 500 cycles with average capacity of 50 mAh/cm(2)-μm, which is higher than the pure V2O5 thin film system.

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