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Issue
Korean Journal of Chemical Engineering,
Vol.18, No.5, 673-678, 2001
The Effects of Cu-doping in V2O5 Thin Film Cathode for Microbattery
Nam SC, Lim YC, Park HY, Jeon EJ, Yoon YS, Cho WI, Cho BW, Yun KS
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.
Keywords: Microbattery; Copper-Vanadium Oxide; Lithium Batteries; All-Solid-State; Thin Film Batteries
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[Cited By]
  1. Lee SI, Jung UH, Kim YS, Kim MH, Ahn DJ, Chun HS, Korean Journal of Chemical Engineering, 19(4), 638, 2002
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