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http://dx.doi.org/10.4313/JKEM.2006.19.6.519

Electrochemical Properties of LiFePO4 Cathode Materials for Lithium Polymer Batteries  

Kong Ming-Zhe (한국전기연구원 전지연구그룹)
Kim Hyun-Soo (한국전기연구원 전지연구그룹)
Gu Hal-Bon (전남대학교 전기공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.19, no.6, 2006 , pp. 519-523 More about this Journal
Abstract
$LiFePO_4$ has been received attention as a potential cathode material for the lithium secondary batteries. In our study, $LiFePO_4$ cathode active materials were synthesized by a solid-state reaction. It was modified by coating $TiO_2$ and carbon in order to enhance cyclic performance and electronic conductivity. $TiO_2$ and carbon coatings on $LiFePO_4$ materials enhanced the electronic conductivity and its charge/discharge capacity. For lithium polymer battery applications, $LiFePO_4$/solid polymer electrolyte (SPE)/Li and $LiFePO_{4}-TiO_{2}/SPE/Li$ cells were characterized by a cyclic voltammetry and charge/discharge cycling. The electrode with $LiFePO_{4}-carbon-TiO_{2}$ in PVDF-PC-EC-$LiClO_{4}$ electrolyte showed promising capacity of above 100 mAh/g at 1C rate.
Keywords
Cathode; Coating; Polymer battery; $LiFePO_4$; $LiFePO_{4}-TiO_{2}$;
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