Synthesis Mechanism of LiFePO4 with Different Carbon Content
LiFePO4(LFP)has been widely used as cathode materials for electric vehicle(EV)batteries.FePO4,Li2CO3 and glucose are commonly used as raw materials to synthesize carbon coated LFP(LFP/C).There are three basic reactions during the sintering process of LFP/C,including the carbonization of carbon source,reduction of Fe3+and decomposition of the Li2CO3 using the raw materials above.These reactions connect with each other and all release gas.In this paper,we have studied the generation of gas during the synthesizing of LFP using in-situ MS.We find different gas releasing process with different carbon content.The particle size and the electrochemical performance have significant differences between two kinds of LFP/C with different carbon content.The results indicate that the carbon content should be carefully controlled to ensure perfect performance.
Lithium-ion batteries LiFePO4 Synthesis mechanism Carbon content
Tian Na Huang Yongping Zhou Henghui
Beijing National Laboratory for Molecular Sciences,College of Chemistry and Molecular Engineering,Pe Pulead Technology Industry Co.,Ltd.,No.35,Chuangxin Road,Changping Science Park,Beijing,China
国际会议
北京
英文
1769-1772
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）