Study on Carbon-coating Li3V2(PO4)3 Cathode Materials Prepared with Different Carbon Sources

摘要：

　　Lithium-ion battery cathode materials,Li3V2(PO4)3/C,were prepared via rheological phase method.Li2CO3,NH4H2PO4,V2O5 were employed as raw materials,and citric acid or polyethylene glycol (PEG) was used as the chelating agent (carbon source).The structure,morphology characters and the electrochemical performances of the samples were tested.The results show that modification by carbon-coating is favorable for the growth of particles.The primary particle size obviously decreases with PEG added,while the agglomeration of primary particles could be inhibited using the citric acid as carbon source,which makes particle size more uniform.Moreover,the electrochemical test results show that both the two kinds of carbon sources can effectively improve the specific capacity and the cycling performance compared with the uncoated sample.

关键词： Power Li-Ion Batteries Cathode Material Lithium vanadium phosphate Rheological phase method Carbon-coating

作者: Li Yuejiao Hong Liang Sun Jingqiu Wu Feng

作者单位: Beijing Key Laboratory of Environmental Science and Engineering, School of Chemical Engineering and Beijing Key Laboratory of Environmental Science and Engineering, School of Chemical Engineering and

会议类型: 国际会议

会议名称: 2012 International Conference on Chemical Engineering,Metallurgical Engineering and Metallic Materials(2012化工、冶金和金属材料国际会议(CMMM2012))

会议地点: 昆明

会议语种:英文

页码: 565-569

在线出版日期: 2012-10-12（万方平台首次上网日期，不代表论文的发表时间）