Abstract In This paper, butyl titanate and LiOH·H2O was used as titanium source and lithium source respectively. Li4Ti5O12 as battery negative material was prepared by sol-gel method. The effects of chelating agent (triethanolamine), raw material ratio, calcination temperature and calcination time on Li4Ti5O12 products were studied by single factor method. The experimental results show that The optimum synthetic conditions are as follows: the spinel Li4Ti5O12 with pure phase, uniform grain size, 100–200 nm particle size and no obvious agglomeration can be prepared under the conditions of molar ratio of lithium to titanium is 0.9–1.0, the calcination temperature can be 730–750 °C at 8 h. After assembled into CR2016 button cell, the first charge-discharge capacity of CR2016 button cell can reach 169 mAh/g at 0.1 C rate, which is very close to the theoretical value of 175 mAh/g.

中文翻译：

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溶胶-凝胶法制备 Li4Ti5O12 及其性能

摘要 本文分别以钛酸丁酯和LiOH·H2O为钛源和锂源。采用溶胶-凝胶法制备了Li4Ti5O12作为电池负极材料。采用单因素法研究了螯合剂（三乙醇胺）、原料配比、煅烧温度和煅烧时间对Li4Ti5O12产物的影响。实验结果表明，最佳合成条件为：在锂钛摩尔比为0.9-的条件下，可制备出相纯、晶粒均匀、粒径100-200 nm、无明显团聚的尖晶石Li4Ti5O12。 1.0, 8 h 时的煅烧温度可以为 730-750 °C。组装成CR2016纽扣电池后，CR2016纽扣电池在0.1C倍率下的首次充放电容量可达169mAh/g，