한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)

한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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리튬 2차 전지용 정극 활물질 LiMn$_2$O$_4$의 X-선 회절 분석 및 전기화학적 특성

X-ray diffraction and electrochemical properties of cathode active material LiMn$_2$O$_4$ for Lithium rechargeable batteries

  • 정인성 (전남대학교 전기공학과) ;
  • 성창호 (전남대학교 전기공학과) ;
  • 박계춘 (목포대학교 전기공학과) ;
  • 박복기 (전북산업대학 전기공학과) ;
  • 구할본 (전남대학교 전기공학과)
  • 발행 : 1997.04.01
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초록

LiMn$_2$O$_4$ is prepared by reacting stoichiometric mixture of LiOH . $H_2O$ and MnO$_2$ (mole ratio 1 ; 1) and heating at 80$0^{\circ}C$, $700^{\circ}C$ for 24h, 36h, 48h, 60h and 72h. We obtained through X-ray diffraction that lattice parameter varied as function of calcined temperature and time. Cathode active materials calcined at 80$0^{\circ}C$ for 36h, (111)/(311) peak ratio was 0.37. It showed good charge/discharge characteristics. When (111)/(311) peak ratio was 0.37, it was that crystal structure is formed very well. In the result of charge/discharge test, when heated at 80$0^{\circ}C$ for 36h, charge/discharge characteristics of LiMn$_2$O$_4$ is the best.

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