Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Fabrication and Characterization of ${LiMn_2}{O_4}$ Cathode for Lithium Rechargeable Battery by R.F.Magnetron Sputtering

R.F. Magnetron Sputtering을 이용한 리튬이차전지 정극용 ${LiMn_2}{O_4}$의 제조 및 특성

  • 우태욱 (부산대학교 생산기술연구소(재료공학부)) ;
  • 손영국 (부산대학교 생산기술연구소(재료공학부))
  • Published : 2000.06.01
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Abstract

LiMn2O4 thin fiolm cathodes for Li-ion secondary battery were fabricated by r.f. magnetron sputtering technique. As-deposited films were amorphous. A spinel structure could not be obtained LiMn2O4 films by in-situ thermal annealing. After post thermal annealing over $700^{\circ}C$ in oxygen atmosphere, LiMn2O4 films prepared above 100 W r.f. power could be crystallized into a spinel structure. The electrochemical property of the LiMn2O4 film cathodes was tested in a Li/1 M LiClO4 in PC/LiMn2O4 cell. From cyclic voltammetry at scan rate of 2mV/sec of 2.5~4.5V, LiMn2O4 electrode prepared by post annealing at 75$0^{\circ}C$ showed good initial capacity. LiMn2O4 electrode prepared by post annealing at 80$0^{\circ}C$ showed the best crycling performance.

Keywords

References

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