Synthesis and Electrochemical Properties of Carbon-Mixed LiEr_(0.02)Fe_(0.98)PO_4 Cathode Material for Lithium-ion Batteries

查看全文 作　　者：Hüseyin G[1]ktepe;Halil [2]Sahan;Ahmet [2]lgen;Saban [2]Patat

机构地区：[1]Department of Chemistry, M krkǒglu Vocational High School, University of Erciyes;[2]Department of Chemistry, Science of Faculty, University of Erciyes

出　　处：《Journal of Materials Science & Technology》索引2011年第27卷第9期,共4页

基　　金：supported by the Research Foundation of Erciyes University FBA-08-440 (Kayseri, Turkey) 摘　　要：LiEr0.02Fe0.98PO4/C composite cathode was synthesized by a simple solution method with polyethylene glycol (PEG) as the reductive agent and carbon source. The effect of erbium doping on the electrochemical behavior of LiFePO4 was studied in this paper. The samples were characterized by X-ray powder diffraction and scanning electron microscopy and the electrochemical properties were investigated by the charge-discharge test. An initial discharge capacity of 149 mAh·g-1 was achieved for the LiEr0.02Fe0.98PO4/C composite cathode with a rate of 0.1 C. The electronic conductivity of Er doped LiFePO4/C was measured as 10-2 S·cm-1. The results indicated that erbium doping did not destroy the lattice structure of LiFePO4 and enlarge the lattice volume. These changes are beneficial to the improvement of the electrochemical performance of the LiFePO4 cathode. 关键词：电化学性能正极材料锂离子电池合成碳源 LIFEPO4 扫描电子显微镜混合

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Synthesis and Electrochemical Properties of Carbon-Mixed LiEr_(0.02)Fe_(0.98)PO_4 Cathode Material for Lithium-ion Batteries

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