A sol-gel method based on citric acid to synthesize LiMnPO4/C composite material for lithium ion batteries
The LiMnPO4/C composite material was synthesized via a sol-gel method based on citric acid.The X-ray diffraction (XRD),scanning electron microscope (SEM) and electrochemical performance tests were adopted to characterize the properties of LiMnPO4/C.The XRD studies show that the pure olivine phase LiMnPO4 can be obtained at a low temperature of 500 ℃.The SEM images illustrates that citric acid used as the chelating reagent and carbon source can restraint the particle size of LiMnPO4/C well.The LiMnPO4/C sample synthesized at 500 ℃ for 10 h performs the highest initial discharge capacity of 122.6 mAh/g,retaining 112.4 mAh/g over 30 cycles,at 0.05C rate.The citric acid based sol-gel method is favor to synthesize the high electrochemical performance of LiMnPO4/C.
Lithium-ion battery cathode material sol-gel method LiMnPO4/C
Liu Jiequn Zhong Shengkui Wu Ling Wan Kang Wang Jian
Shagang School of Iron and Steel, Soochow University, Suzhou 215021 Shagang School of Iron and Steel, Soochow University, Suzhou 215021; College of Chemistry and Chemic College of Chemistry and Chemical Engineering, Central South University, Changsha 410083
国际会议
上海
英文
100-100
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）