锂离子电池正极材料LiV_3O_8的研制

以NH4VO3、LiOH.H2O为原料用固相合成法制备了LiV3O8锂电池正极材料,采用XRD、TEM、EDS、粒度分析方法进行该材料的微观结构研究,测试了LiV3O8样品的电化学性能。在0.1C倍率下材料的首次充放电容量为302mA.h/g、283mA.h/g,前10次循环的平均放电容量为272mAh/g。同时进一步指出了改进循环性能的研究方向。

Preparation of Positive Material LiV3O8 for Li-ion Battery

The positive material LiV3O8 for Li-ion battery was prepared by the solid reaction with NH4VO3 and LioH H2O as raw materials at high temperature. The micro-structure of as-received samples were studied to employed XRD,TEM,EDS and the test of particles size. The electrochemical performance of as-received samples were monitored. The results show that the initial charge-discharge capacities were 302 mAh/g and 283 mAh/g respectively. The average discharge capacity was 272 mAh/g at the front 10 cycles. And meanwhile,the improvement way of increasing cycle capacity was indicated.