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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Charge/discharge Properties As a Function of Synthetic Conditions of LiMnO$_2$ for Lithium Polymer Batteries

리튬 폴리머 전지용 LiMnO$_2$의 합성조건에 따른 충방전 특성

  • 조영재 (전남대학교 전기공학과) ;
  • 김종욱 (전북대학교 전자정보사업단) ;
  • 박계춘 (목포대학교 전기제어공학부) ;
  • 위성동 (전남대학교 전기공학과) ;
  • 구할본 (전남대학교 전기공학과)
  • Published : 2001.11.01
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Abstract

Orthorhombic LiMnO$_2$ was synthesized by solid-state reaction using LiOH$.$H$_2$O and Mn$_2$O$_3$ as starting material. Its electrochemical properties as cathode in lithium batteries were examined. X-ray diffraction revealed that the LiMnO$_2$ compound showed a well-defined orthorhombic phase of a space group with Pmnm. The capacity of LiMnO$_2$ agreed well with its specific surface area and grinding treatment was effective in improving cycling performance. For lithium polymer battery applications, the LiMnO$_2$ cell was characterized electrochemically by charge-discharge experiments. And the relationship between the characteristics of powder and electrochemical properties was studied in this research. A maximum discharge capacity of 160-170mAhg$^{-1}$ for LiMnO$_2$/Li cell was achieved

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