Effect of Heating Time on the Structural and Electrochemical Properties of LiFePO4 by Molten Salt Method

摘要：

　　Well-crystallized LiFePO4 cathode materials were synthesized by NaCl-KCl molten salt method.The effect of heating time on the structure,morphology and electrochemical properties of the materials were studied in detail.Single olivine-type LiFePO4 phase was obtained,and the morphology and particle size of the powders could be controlled by changing the synthesis conditions.It was shown that LiFePO4 cathode material synthesized at 680℃ for 3h with the salt content N=2 (defining the molar ratio of NaCl-KCl/LiFePO4 as N) had a narrow particle-size distribution and spherical or quasi-spherical shape.Meanwhile,the tap density of the cathode material reached the maximum of 1.501gcm-3.The charge-discharge test indicated that the initial charge and discharge specific capacity reached 138mAhg-1 and 125mAhg-1 respectively at the current density of 0.3mAcm-2.

关键词： Lithium iron phosphate Cathode material Molten salt method Heating time

作者: Zhengguang Zou Xiaomin Li Yi Wu Fei Long Dongye Yao

作者单位: Key Laboratory of New Processing Technology for Nonferrous Metals and Materials,Ministry of Educatio Key Laboratory of New Processing Technology for Nonferrous Metals and Materials,Ministry of Educatio

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 299-301

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）