Structural and Electrochemical Properties of Spin Coated LiCoO2 Cathode Thin Film in Lithium Secondary Batteries 


Vol. 50,  No. 3, pp. 243-0, Jun.  2006
10.5012/jkcs.2006.50.3.243


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  Abstract

LiCo2 박막은 Pt/Ti/Si2/Si 기판 위에 구연산 졸을 이용하여 spin coating에 의해 제작하였다. 기판위에 코팅된 구연산 졸을 380 oC에서 15분간 건조시킨 후 750 oC에서 10분간 열처리하여 박막을 얻었다. 얻어진 박막은 X-선 회절분석 결과 R3m의 결정구조를 가짐을 알수 있었고, 전기화학적 특성의 측정결과 1차 방전용량은 0.35 μAh/cm2-μm로 측정되었다. The LiCo2 thin films were prepared on the Pt/Ti/Si2/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 LiCo2 films for electrochemical test was about 1×1 cm2. A Li foil and 1M LiCl4 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 LiCo2 film is also reported.

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  Cite this article

[IEEE Style]

K. C. Yoo and S. Kang, "Structural and Electrochemical Properties of Spin Coated LiCoO2 Cathode Thin Film in Lithium Secondary Batteries," Journal of the Korean Chemical Society, vol. 50, no. 3, pp. 243-0, 2006. DOI: 10.5012/jkcs.2006.50.3.243.

[ACM Style]

Ki Cheon Yoo and Seong-Gu Kang. 2006. Structural and Electrochemical Properties of Spin Coated LiCoO2 Cathode Thin Film in Lithium Secondary Batteries. Journal of the Korean Chemical Society, 50, 3, (2006), 243-0. DOI: 10.5012/jkcs.2006.50.3.243.