以氢氧化锂和钛酸四丁酯为原料,采用水热法制备出花状纳米片簇 Li4 Ti5 O12粉体,研究了不同原料配比对产物晶体结构的影响。采用 XRD、SEM对Li4 Ti5 O12的晶体结构和形貌进行了分析,结果表明所得产物是由 Li4 Ti5 O12纳米片层组成的花状微球,所得晶体为尖晶石型结构。恒电流充放电实验表明,Li4 Ti5 O12在充放电倍率为0.1、1和2C 下首次放电比容量分别为160、141和128mAh/g。
Flower-like Li4Ti5O12 nanoplatelets were synthesized by a hydrothermal method using Ti(OC4H9)4 and LiOH·H2 O as the raw materials.The effect of different ratio of raw materials on the crystal structure was investigated.X-ray diffraction and scanning electron microscopy were used to analyze the crystal and morpholo-gy of Li4 Ti5 O12 nanoplatelets.The analysis showed that the products were made up of Li4 Ti5 O12 nanoplatelets to form the flower-like microspheres with a spinel crystal structure.The constant charge-discharge experiments illustrated that the initial discharge capacity were up to 160,141,128mAh/g at the rate of 0.1,1,2C respective-ly.
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