Synthesis and characterization of LiFeP04/PPy composite powders
A series of lithium iron phosphate/polypyrrole (LiFePO4/PPy) composite powders were synthesized by chemical oxidation method with different doping agent and oxidation agent. The composite powders were characterized by scanning electron microscopy (SEM), Fourier Transform Infrared Spectrum (FTIR), and X-ray diffraction (XRD). The results showed that the composite powders composed of PPy and LiFePO4. And the doping of polypyrrole in LiFePO4 could weaken the XRD intensity of LiFePO4, but could not destroy its crystallization. With the increase of pyrrole in LiFePOd PPy composite powders, the polypyrrole on the surface of LiFePO4 increased and dispersed more homogeneously. Thermogravimetric analysis (TGA) data indicated the heat-stability of LiFePOa/PPy was very good that the composite powders would not oxidate till 300℃ in the air flow.
LiFePO4 Polypyrrole Lithium ion battery doping composite powders
Xiang-zhong Ren Xi Li Pei-xin Zhang Jian-hong Liu Qian-ling Zhang Zhong-kuan Luo
School of chemistry and chemical engineering,Shenzhen University,Shenzhen 518060,China
国际会议
2008国际粉体技术与应用论坛暨全国粉体产品与设备应用技术交流大会
北京
英文
205-210
2008-04-01（万方平台首次上网日期，不代表论文的发表时间）