Abstract—

We have studied the influence of the glycine : nitrate (G/N) ratio and heat treatment temperature on characteristics of nanocrystalline Li₄Ti₅O₁₂ powders synthesized from titanium tetrabutylate and lithium carbonate via combustion of an aqueous–organic precursor, followed by heat treatment. At the optimum reactant ratio G/N = 0.7, the content of the Li₄Ti₅O₁₂ phase after heat treatment of the powders for 2 h at 700°C is 97% and the crystallite size is 100 nm. It has been shown that modifying the glycine–nitrate process by adding citric acid to solution (CitH₃/ΣM = 0.37–0.56) allows one to improve the homogeneity of the components in the precursor, thus ensuring the preparation of single-phase powders.

中文翻译：

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甘氨酸-硝酸盐法和改性甘氨酸-硝酸盐法合成纳米结构Li 4 Ti 5 O 12粉末

摘要-

我们研究了甘氨酸：硝酸盐（G / N）比和热处理温度对四丁酸钛和碳酸锂通过水-有机前体燃烧合成纳米晶Li ₄ Ti ₅ O ₁₂粉末特性的影响。治疗。在最佳反应物比G / N = 0.7时，将粉末在700°C下热处理2小时后，Li ₄ Ti ₅ O ₁₂相的含量为97％，微晶尺寸为100 nm。研究表明，通过向溶液中添加柠檬酸来修饰甘氨酸-硝酸盐工艺（CitH ₃/ΣM= 0.37–0.56）可以提高前驱物中各组分的均匀性，从而确保制备单相粉末。