【作者】 张静； 黄可龙； 赵裕鑫；

【Author】 ZHANG Jing , HUANG Ke-long, ZHAO Yu-xin(Institute of functional materials & chemistry, college of chemistry and chemical engineering, central southuniversity, changsha,410083)

【机构】 中南大学化学化工学院功能材料研究所；

【摘要】 LiFePO4是一种新型的锂离子电池的活性正极材料,本实验采用水热法制备了纯相的LAFePO4粉体并对其进行了电化学性能研究。实验发现,合成的LiFePO4结晶性良好,平均粒径为2.147μm而且粒径分布窄。电池充放电测试表明,该LAFePO4具有良好的电化学性能:首次充放电比容量分别为131mAh/g和124mAh/g,充放效率为94.7%,循环50次后,放电比容量仍高达112mAh/g,容量损失仅为10.7%。更多还原

【Abstract】 LiFePO4 is a new type cathode material of lithium-ion betery. LiFePO4 was synthesized by hydrothermal methods and its electrochemical performance was investigate 1 in terms of cycling behavior. It was found that the LiFePO4had better crystalline structure and particle size was 2.147um.In the charge-discharge test, the LiFePO4 showed better electrochemical performance. Its first specific charge and discharge capacities were 131mAh/g and 124mAh/g. The efficient was 94.7%. After 50 cycles, its discharge capacity was 112mAh/g, the loss of the capacity was 10.7%.更多还原