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정극 활물질 Li(Cr0.4Mn0.6)O2의 충ㆍ방전 특성

Charge-discharge Properties of Positive Active Material Li(Cr0.4Mn0.6)O2

  • 위성동 (전남대학교 전기공학과) ;
  • 정인성 (전남대학교 전기공학과) ;
  • 구할본 (전남대학교 전기공학과)
  • 발행 : 2004.10.01

초록

An impedance properties of the positive active material Li(Cr$_{0.4}$Mn$_{0.6}$)O$_2$ are measured by the changeable trend to the time. The charge-discharge capacities of 297 mAh(g)$^{-1}$ 175 mAh(g)$^{-1}$ are obtained by the made cell with the active material that the Cr was added to LiMnO$_2$ to prevent structural degradation of an electrode active material with impedance of 75 Ω to get at an initial hour. Resultantly, these variations which the impedances enhanced continually, were not watched the impeditive variations as the results of the delay time that the positive thin films and the references have been soaked all together in the solution of electrolyte of 1M LiPF$_{6}$ EC/DEC(l/2). Accordingly, it means an amount increased of the discharged capacities in the view of the results that the impeditive values were decreased are known already through a authorized paper.per.

참고문헌

  1. Sung-Dong Wee, Jong-Uk Kim, Hal-Bon Gu, 'Electrochemical properties and estimation on active material $LiMnO_{2}$ synthesis for secondary batteries', Trans. EEM, Vd. Vol. 4 No. 2 p. 35, 2003
  2. J. U. Kim, Y. J. Jo, and H. B Gu, 'Electrochemical properties of $LiMnO_{2}$ organic composite cathodes with hight capacity for lithium ion polymer battery', Journal of KiEEME. Vol. 15, No. 2, p. 162, 2002
  3. Seung-Taek Myung, Shinichi Komaba, and Naoaki, 'Orthorhombic $LiMnO_{2}$ as high capacity catgode for Lithium-Ion battery by hydrothermal route at 170 °C', Chemistry Letters. p. 80. 2001
  4. 위성동, 구할본, '이차전지용 $LiMnO_{2}$ 활물질합성과 전기 화학적 특성 평가', 추계학술대회논문집, 15권, p. 210, 2002
  5. Seung-Taek Myung, Shinichi Komaba, and Naoak, 'Synthesis of orthorhombic $LiMnO_{2}$ as a high capacity cathode for Li Ion battery by emulsion drying method', Chemistry Letters, p. 574. 2001
  6. Shin-ichi Tobishima, Yoshihiko Ogino, and Yuwatanabe, 'Influence of additives in electrolyte solutions on safety and cycle life of lithium cells', Department of Chemistry, Faculty of Engineering, Gunma University. Aug. 6, 2002
  7. Yukio Sasaki, Hayato Miura, Kazuhiro Tominaga, and Noritoshi Nanbu, 'Electric properties and application to a lithium battery of ternary solvent electrolyes with ethylene carbonate-dimethyl cabonate-3 ethylaydnone and 3_Ethylsydnone', Department of Applied Chemistry, Faculty of Engineering, Tokyo Institute of Polytechnics (1583 Liyma, Atsugi, Kanagawa 243-0297, Japan), February 21, 2002