Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Thermal Stability of Delithiated LiCoO2-organic Electrolyte for Lithium-Ion Rechargeable Batteries

리튬이온이차전지용 LiCoO2-유기전해액의 충전상태에 따른 열적 안정성

  • 김동훈 (한국전기연구원 전지연구그룹) ;
  • 이영호 (한국전기연구원 전지연구그룹) ;
  • 신혜민 (한국전기연구원 전지연구그룹) ;
  • 정영동 (한국전기연구원 전지연구그룹) ;
  • 도칠훈 (한국전기연구원 전지연구그룹) ;
  • 진봉수 (한국전기연구원 전지연구그룹) ;
  • 김현수 (한국전기연구원 전지연구그룹) ;
  • 문성인 (한국전기연구원 전지연구그룹) ;
  • 오대희 (부경대학교 공업화학과) ;
  • 김기원 (경남대학교 IT용 에너지 저장 및 변환센터)
  • Published : 2007.05.01
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Abstract

Thermal behavior of $Li_{1-x}CoO_2$ has been investigated employing DSC (Differential Scanning calorimetry) and TGA (Thermogravimetry Analyzer), and the crystal parameters were calculated from XRD (X-ray diffraction).for the commercial rectangular pouch cell(1000 mAh).The cathode materials coated over aluminium foil current collector is made up of a blend consisting of active material $LiCoO_2$(size $20\;{\mu}m$, 94 wt%), conducting material super p black (SPB, 3 wt%) and binder polyvinylidene fluoride (PVDF, 3 wt%). The anode is a mix consisting of carbon (92 wt%) and PVDF(8 wt%) coated over copper foil. The cells for the experiments were first preconditioned by cycling three times and stabilized at OCV=3.0, 3.5, 4.2, 4.35 and 4.5 V. The stabilized cathode material was used for thermal and crystal parameter investigations.

Keywords

References

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