ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 50, Number 3
JKCSEZ 50(3)
June 20, 2006 

The LiCoO₂ thin films were prepared on the Pt/Ti/SiO₂/Si substrate by spin coating using citrate sol. The citrate sol was spin-coated on substrate and dried at 380 ^oC for 15 min. to evaporate the solvents and remove the organic materials. The as-deposited films were annealed at 750 ^oC for 10 min. in air for crystallization. The X-ray diffraction patterns for the film have been indexed hexagonal system with space group R3m. The active area of LiCoO₂ films for electrochemical test was about 1×1 cm². A Li foil and 1M LiClO₄ in propylene carbonate(PC) and ethylene carbonate(EC) (1:1)were used as an anode and an electrolyte, respectively. The galvanostatic charge-discharge test was carried out at constant current density ranging from 5 A/cm² in the voltage window between 4.2 and 3.0 V. The first discharge capacity of the film is 0.35 μAh/cm²-μm. The cycling behavior of the LiCoO₂ film is also reported.