Hydrothermal synthesis of Zn-doped Li4Ti5O12 with improved high rate properties for lithium ion batteries
Hydrothermal synthesis of Zn-doped Li4Ti5O12 with improved high rate properties for lithium ion batteries
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DOI：
10.1016/j.ceramint.2013.01.032
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发表时间：
2013-08
影响因子：
5.2
通讯作者：
Zhenwei Zhang;Liyun Cao;Jianfeng Huang;Zhou Sen;Huang Yicheng;Yingjun Cai
中科院分区：
文献类型：
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作者：
Zhenwei Zhang;Liyun Cao;Jianfeng Huang;Zhou Sen;Huang Yicheng;Yingjun Cai
采用水热法成功合成了具有大比表面积的球形掺锌Li4Ti5O12(Li3.95Zn0.05Ti5O12)。用X射线衍射仪(XRD)和扫描电子显微镜(SEM)对样品的结构和形貌进行了表征。用恒电流法测试了Li4Ti3.95Zn0.05O12的电化学性能，结果表明，Li4Ti3.95Zn0.05O12在0.1C下的放电容量为182.45mAh/g。Li3.95Zn0.05Ti5O12具有良好的输运通道，在10C下表现出122.38mAhg的高倍率容量和较好的循环稳定性，在锂离子电池中具有良好的应用前景。
Hydrothermal method has been successfully used to synthesize a spheroidic zinc doped Li4Ti5O12(Li3.95Zn0.05Ti5O12) with large specific surface area. X-ray diffraction (XRD) and scanning electron microscope (SEM) are used to characterize the structure and morphology. The electrochemical properties are measured by the galvanostatic method and the results demonstrate that the Li4Ti3.95Zn0.05O12has a large discharge capacity of 182.45mAh/g at 0.1C. With the favorable transport channel caused by the doped Zn2+, the Li3.95Zn0.05Ti5O12exhibits an enhanced high rate capacity of 122.38mAh/g and better cyclic stability at 10C, which is promising for application in lithium ion batteries.