超声波对锂离子正极材料LiCoO_2性能的影响  

Influence of Ultrasonic on Characteristics of LiCoO_2 Cathode Material

作　　者：王晓宇[1] 翟金玲[1] 栗欢欢[1] 叶茂[1] 孙欣[1] 杨晓亮[1] 魏进平[1] 阎杰[1] 

机构地区：[1]南开大学新能源材料化学研究所,天津300071

出　　处：《南开大学学报（自然科学版）》2008年第5期87-90,95,共5页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家973计划项目(2002CB211800);天津市应用基础研究计划项目(06YFJMJC13300)

摘　　要：在电解法的基础上,提出了一种新的改进方法来制备锂离子电池正极材料.经超声波与相转移后,采用电解液中析出的L i2CO3和电解中间产物Co(OH)2作为前驱物制备得到了锂离子正极材料L iCoO2.通过X射线衍射,扫描电镜对所合成的材料进行了表征.实验结果证明,该前驱物在850℃下反应仅3 h就能得到性能优异的L iCoO2正极材料,大大缩短了反应时间.A new method based on electrolysis was developed to prepare LiCoO2 cathode material. After ultrasonic and phase-transfer, the LiCoO2 was synthesized by the reaction of Li2CO3 and the Co（OH）2 which was a product from the electrolysis of cobalt. The prepared material was characterized by XRD and SEM. The result showed that LiCoO2 with favorable electrochemical properties was synthesized at 850℃ for just 3 h, and the solid-state reaction time decreased greatly.

关 键 词：锂离子电池 正极材料 电解 超声波 

分 类 号：TM911[电气工程—电力电子与电力传动]