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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Solid-state Synthesis of $LiFePO_4$ Cathode Materials for Lithium Ion Batteries Controling Particles Size of Precuror

  • Jun, Dae-Kyoo (Dept. of Electrical Eng., Chonnam National Univ.) ;
  • Li, Hu (Dept. of Electrical Eng., Chonnam National Univ.) ;
  • Park, Kyung-Hee (Dept. of Electrical Eng., Chonnam National Univ.) ;
  • Gu, Hal-Bon (Dept. of Electrical Eng., Chonnam National Univ.) ;
  • Park, Bok-Kee (Dept. of Electrical Eng., Howon National Univ.)
  • Published : 2007.06.21
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Abstract

The $LiFePO_4$ as cathode materials for lithium ion batteries was synthesized by the solid-state reaction using ballmiller and employed one step heat treatment at $650^{\circ}C$. The influence of the heating time on the structure, particle size and cycle performance was investigated. $LiFePO_4$ heated at $650^{\circ}C$ for 3 h exhibited higher discharge capacity of 140 mAh/g and excellent cycle performance.

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