A facile strategy to prepare nano-crystalline Li4Ti5O12/C anode material via polyvinyl alcohol as carbon source for high-rate rechargeable Li-ion batteries
A facile strategy to prepare nano-crystalline Li4Ti5O12/C anode material via polyvinyl alcohol as carbon source for high-rate rechargeable Li-ion batteries
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DOI：
10.1016/j.electacta.2013.01.112
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发表时间：
2013-03-30
影响因子：
6.6
通讯作者：
Yin, Geping
中科院分区：
文献类型：
--
作者：
Fang, Wei;Cheng, XinQun;Yin, Geping
在800 ℃下合成了Li 4 Ti 5 O 12/C纳米复合材料，采用XRD、SEM、TEM和HRTEM对复合材料进行了表征，并采用拉曼光谱对复合材料中的碳进行了检测。实验结果表明，与600、700和900 ℃合成的Li 4 Ti 5 O 12和纯Li 4 Ti 5 O 12相比，800 ℃合成的Li 4 Ti 5 O 12/C纳米粒子显著提高了锂离子电池的倍率性能和循环性能。以纳米晶Li_4Ti_5O_（12）为负极的锂离子电池在1C、10 C、20 C、40 C和80 C的电流密度下，表现出优异的可逆容量，分别为169、141、132、106和82 mAh·g ~（-1）。(C)2013爱思唯尔有限公司保留所有权利。
Li4Ti5O12/C nano-particles is synthesized at 800 degrees C, and investigated by XRD, SEM, TEM and HRTEM, and the carbon in the composite is detected by Raman spectroscopy. Experimental results indicate that compared with those synthesized at 600,700 and 900 degrees C and pure Li4Ti5O12 the Li4Ti5O12/C nanoparticles synthesized at 800 degrees C remarkably enhances the rate performance and cycling performance of lithiumion batteries. Lithium-ion batteries with nanocrystalline Li4Ti5O12 used as anode exhibit an excellent reversible capacity of 169, 141, 132, 106 and 82 mA hg(-1), at the current density of 1 C, 10 C, 20 C, 40 C and 80 C, respectively. (C) 2013 Elsevier Ltd. All rights reserved.