Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Synthesis of LiCoO2 Powders using Recycled Cobalt Precursors from Waste WC-Co Hard Metal

폐 WC-Co계 초경합금에서 추출된 코발트 재생 원료를 이용한 LiCoO2 입자 합성 연구

  • Yang, Hee-Seung (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Pee, Jae-Hwan (Ceramicware Technology Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Yoo-Jin (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology)
  • 양희승 (한국세라믹기술원 엔지니어링 세라믹센터) ;
  • 피재환 (한국세라믹기술원 도자기술센터) ;
  • 김유진 (한국세라믹기술원 엔지니어링 세라믹센터)
  • Received : 2011.04.08
  • Accepted : 2011.05.24
  • Published : 2011.06.28
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Abstract

[ $LiCoO_2$ ] a cathode material for lithium rechargeable batteries, was prepared using recycled $Co_3O_4$. First, the cobalt hydroxide powders were separated from waste WC-Co hard metal with acid-base chemical treatment, and then the impurities were eliminated by centrifuge method. Subsequently, $Co_3O_4$ powders were prepared by thermal treatment of resulting $Co(OH)_2$. By adding a certain amount of $Li_2CO_3$ and $LiOH{\cdot}H_2O$, the $LiCoO_2$ was obtained by sintering for 10 h in air at $800^{\circ}C$. The synthesized $LiCoO_2$ particles were characterized by X-ray diffraction (XRD) and Scanning Electron Microscope (SEM) analysis.

Keywords

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