Cu_2V_2O_7的合成及电化学性能

Synthesis and Electrochemical Performance of Cu_2V_2O_7

采用溶胶凝胶法制备了锂离子电池负极材料Cu2V2O7,分别用X射线衍射仪,电子扫描电镜对产物的结构和微观形貌进行表征。结果表明,合成产物纯度高,微粒形貌规整、表面光滑、粒径小。用其组装的电池经恒流充放电测试表明,样品初始放电比容量为682.8mAh/g,具有良好的循环性能。

Cu2 V2O7 was prepared by sol gel method as cathode materials for Li-ion battery. The structure and morphology of the sample were characterized by XRD and SEM. The results show that the powder is the spherical particle with high purity, smooth surface, and small particle size. The electrochemical prop- erties of the sample are also investigated with charge and discharge tests. Synthesized by sol-gel method, Cu2 V2 O7 cathode materials present a good cycling performance with the initial specific discharge capacity of 682.8 mAh/g.