Abstract In this paper, Li4Ti5O12 was prepared by high temperature solid-state method using titanium dioxide as titanium source and lithium carbonate as lithium source. The effects of lithium-titanium molar ratio, calcination temperature and sucrose as carbon source on the preparation of Li4Ti5O12 were studied. The experimental results show that when the molar ratio of lithium to titanium is 0.95 and the calcination temperature is 800 °C, pure phase Li4Ti5O12 can be prepared. The addition of sucrose carbon source effectively reduces the agglomeration of the product, making the particle size of the prepared lithium titanate sample about 1–2 microns. The first full specific capacity of pure lithium titanate is 160 mAh.g-1 at 0.1 C ratio and 123 mAh/g at 1 C ratio. After adding sucrose, the first charge-discharge specific capacity of lithium titanate was 168 mAh/g at 0.1 C ratio, 150 mAh/g at 1 C ratio, and the high specific capacity of lithium titanate with changed properties increased significantly after adding sucrose.

中文翻译：

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固相法制备 Li4Ti5O12 及其性能

摘要 本文以二氧化钛为钛源，碳酸锂为锂源，采用高温固相法制备Li4Ti5O12。研究了锂钛摩尔比、煅烧温度和蔗糖作为碳源对制备Li4Ti5O12的影响。实验结果表明，当锂钛摩尔比为0.95，煅烧温度为800℃时，可以制备出纯相Li4Ti5O12。蔗糖碳源的加入有效地减少了产物的团聚，使制备的钛酸锂样品粒径在1-2微米左右。纯钛酸锂的第一个完整比容量在 0.1 C 比率下为 160 mAh.g-1，在 1 C 比率下为 123 mAh/g。加入蔗糖后，