Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Cathode Characteristics of Co3(PO4)2-Coated [Co0.1Ni0.15Li0.2Mn0.55]O2 for Lithium Rechargeable Batteries

Co3(PO4)2로 표면코팅한 Li[Co0.1Ni0.15Li0.2Mn0.55]O2의 리튬 2차전지용 양극재 특성

  • Lee, Sang-Hyo (Department of Materials Engineering, Hanbat National University) ;
  • Kim, Kwang-Man (Ionics Devices Team, IT-NT Group, Electronics and Telecommunications Research Institute (ETRI)) ;
  • Koo, Bon-Keup (Department of Materials Engineering, Hanbat National University)
  • 이상효 (한밭대학교 재료공학과) ;
  • 김광만 (한국전자통신연구원 IT-NT 그룹 이오닉스소자팀) ;
  • 구본급 (한밭대학교 재료공학과)
  • Published : 2008.02.29
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Abstract

To prepare the high-capacity cathode material with improved electrochemical performances, nanoparticles of $C0_3(PO_4)_2$ were coated on the powder surface of $Li[Co_{0.1}Ni_{0.15}Li_{0.2}Mn_{0.55}]O_2$, which was already synthesized by simple combustion method. The coated powders after the heat treatment at >$700^{\circ}C$ surely showed well-structured crystalline property with nanoscale surface coating layer, which was consisted of $LiCOPO_4$ phase formed from the reaction bwtween $CO_3(PO_4)_2$ and lithium impurities. In addition, cycle performance was particularly improved by the $CO_3(PO_4)_2$-coating for the cathode material for lithium rechargeable batteries.

Keywords

References

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