Effect of Acticarbon on the Electrochemical Characteristics of LiFePO4 Battery Powder by Microwave Hydrothermal

摘要：

　　Olivine LiFePO4 and LiFePO4-C composite cathode materials were prepared by microwave hydrothermal process using FeC2O4·2H2O,NH4H2PO4,LiOH·H2O and acticarbon as source materials.The effect of acticarbon on the structure and charge-discharge property of LiFePO4 crystallites was investigated.The as-prepared battery powders were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM) and energy dispersive spectrometer(EDS).The charge-discharge behavior was investigated for the characterization of the electrochemical performances of the powder.Results show that the introduction of acticarbon will not change the LiFePO4 crystal structure,but achieve more uniform and fine crystallites and result in better electrochemical performance.Initial discharge capacity of the as-prepared LiFePO4 is 103.4 mAh·g-1 at 0.1 C rate.The discharge capacity of LiFePO4-C is 136.1 mAh·g-1 at the first cycle and 133.9 mAh·g-1 after 30 cycles at 0.1 C rate.

关键词： LiFePO4 Acticarbon Microwave hydrothermal Electrochemical property

作者: Sun Ying Huang Jian-feng Cao Li-yun Wu Jian-peng

作者单位: Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry,Ministry of Education,Shaanxi University of Science & Technology,Xian Shaanxi 710021,China

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 199-202

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）