| Li4Ti5O12溶胶-凝胶法合成及其机理研究 |
| Study on Synthesis and Mechanism of Li4Ti5O12 by Sol-Gel Method |
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| 摘要: |
| 关键词: 溶胶-凝胶法 Li4Ti5O12 合成 机理 |
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| Abstract: The precursors of Li4Ti5O12 were prepared from tetrabutyl titanate and lithium acetate by sol-gel process. The Li4Ti5O12 samples were synthesized by calcining the gel precursors at 400～900 ℃ in air for 6～20 h. Its reaction mechanism was investigated by infrared spectroscopy(IR), thermogravimetry(TG) and X-ray diffraction(XRD). The effects of sinter-temperature, calcination-time and thermal-treatment for the products were discussed. The samples were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM). The results showed that the single-phase products were obtained by calcining the gel precursors at 800 ℃ in air for 20 h, the sinter-temperature was lower than that of solid-state method, the particles were narrowly distributed, well crystallized with a size range from 0.3μm to 0.5 μm. |
| Keywords: sol-gel method Li4Ti5O12 synthesis mechanism |
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| 刘东强,赖琼钰,郝艳静,卢集政,吉晓洋.Li4Ti5O12溶胶-凝胶法合成及其机理研究[J].无机化学学报,2004,20(7):829-832. |
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