Synthesis and Characterization of Al-Doped Li4Ti5O12 with Sol Gel Method for Anode Material Lithium Ion Battery
Synthesis and Characterization of Al-Doped Li4Ti5O12 with Sol Gel Method for Anode Material Lithium Ion Battery
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DOI：
10.1016/j.matpr.2019.03.188
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
I. Nuroniah;S. Priyono;A. Subhan;B. Prihandoko;A. Suhandi;Ahmad Sohib
中科院分区：
文献类型：
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作者：
I. Nuroniah;S. Priyono;A. Subhan;B. Prihandoko;A. Suhandi;Ahmad Sohib
采用溶胶-凝胶法合成了尖晶石型Li 4 Ti（5-x）O 12 Alx（x = 0，0.05）。样品在800 ℃下烧结4小时。采用X射线衍射、充放电、循环伏安、交流阻抗等测试手段对材料进行表征和电化学性能分析。结果表明，Al 3+离子的掺杂没有改变Li 4 Ti 5 O 12的结构。随着扫描速率的增加，循环伏安图的阳极和阴极电流峰变得更高、更尖锐。Al掺杂的Li 4 Ti 5 O 12的电导率比未掺杂的Li 4 Ti 5 O 12的电导率高。充放电曲线表明Li 4 Ti 5 O 12具有良好的倍率性能。
Spinel Li4Ti(5-x)O12Alx(x = 0, 0.05) was synthesized via sol gel method. The samples were sintered at 800oC for 4 hours. The characterization of material and electrochemical performance was analyzed by X-ray diffraction, charge discharge test, cyclic voltammetry and EIS. The results show that the addition of doping Al3+ion does not changed the structure of Li4Ti5O12. The anodic and cathodic current peaks from cyclic voltammogram are higher and sharper as scan rate increases. The electrical conductivity Al-doped Li4Ti5O12has higher than Li4Ti5O12pristine. Charge discharge curve indicated that Li4Ti5O12pristine has good rate capability battery.