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

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The crystal growth and the electrochemical property of $LiZn_xMn{2-x}O_4(0\leqq x \leqq$ 0.15) cathode material

$LiZn_xMn{2-x}O_4(0\leqq x \leqq$ 0.15) 정극 활물질의 결정 성장 변화와 전기 화학적 특성

  • Jeong, In-Seong (Dept.of Electrical Eng., Chonnam National Univ.) ;
  • Gu, Hal-Bon (Dept.of Electrical Eng., Chonnam National Univ.) ;
  • Lee, Jin (Dept.of Electrical Eng., Mokpo National Univ.) ;
  • Park, Gye-Choon (Dept.of Electrical Eng., Mokpo National Univ.)
  • 정인성 (전남대학교 전기공학과) ;
  • 구할본 (전남대학교 전기공학과) ;
  • 이진 (목포대학교 전기전자컴퓨터공학부 전기공학전공) ;
  • 박계춘 (목포대학교 전기전자컴퓨터공학부 전기공학전공)
  • Published : 1999.05.01
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Abstract

We report on the electrochemical properly of LiZ $n_{x}$Mn $_{2-x}$ $O_4$ for different degrees of Zn substitution(x) Though all cathode material showed spinel phase based on cubic phase in X-ray diffraction, other peaks(M $n_2$ $O_3$ or M $n_3$ $O_4$) gradually exhibited and became intense with the increase of x vague in LiZ $n_{x}$Mn $_{2-x}$ $O_4$. In addtion, TG-DTA analysis exhibited that both LiM $n_2$ $O_4$ and LiZ $n_{0.1}$ M $n_{1.9}$ $O_4$ occurred the weight loss(TG) and the endothermic and exothermic reaction(DTA) until 80$0^{\circ}C$ When x=0.1 in LiZ $n_{x}$Mn $_{2-x}$ $O_4$ cathode materials showed the charge and discharge capacity of about 100mAh/g at first cycle and about 70mAh/g after tooth cycle.cle.e.cle.e.e.e.

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