Synthesis and electrochemical performance of nanosized Co3O4
Synthesis and electrochemical performance of nanosized Co3O4
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DOI：
10.1016/s0254-0584(02)00442-x
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发表时间：
2003-03
影响因子：
4.6
通讯作者：
Zheng-yong Yuan;F. Huang;C. Feng;Ju-tang Sun;Yunhong Zhou
中科院分区：
文献类型：
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作者：
Zheng-yong Yuan;F. Huang;C. Feng;Ju-tang Sun;Yunhong Zhou
以碳酸氢氧化钴和草酸为原料，通过流变相反应制备草酸前驱体，通过热解法制备了锂离子可充电电池负极材料co3o4。采用x射线粉末衍射、透射电镜和电化学测试对样品进行了表征。结果表明，样品具有较大的锂存储容量，可逆容量大于900mAh·g−1。讨论了co3o4的粒径对容量和循环性能的影响。样品的平均粒径约为37nm，电化学性能最佳。
The nanosized anode material Co3O4for lithium ion rechargeable batteries was synthesized through pyrolysis of the oxalate precursor, which was prepared with rheological phase reaction from cobaltous hydroxide carbonate and oxalic acid. The Co3O4samples were characterized by X-ray powder diffraction, transmission electron microscopy and electrochemical testing. The results revealed that the samples exhibited large lithium storage capacities and the reversible capacities are more than 900mAh·g−1. The influence of particle size of Co3O4on the capacity and cycle-ability was discussed. The sample showed the best electrochemical property with the average particle size of about 37nm.