中南大学学报（自然科学版）2012，Vol.43Issue(11)：4205-4210,6.
Li4Ti5O12/NiO复合材料的制备及其电化学性能
Preparation and electrochemical properties of Li4Ti5O12/NiO composite electrode material
摘要
Abstract
A series of Li4Ti5O12/NiO composite materials were prepared by chemical deposition combined with thermal decomposition of a mixture of Li4Ti5O12 Ni(NO3)2-6H2O and NH4HCO3. The composite material was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrum (EDS), galvanostatic charge-discharge test and cyclic voltammetery(CV). The results show that Li4Ti5O12/NiO(5%) presents the best performance among all the samples, and proper coating can efficiently improve the electrochemical performance of Li4Ti5O12. The discharge capacity of Li4Ti5O12/NiO(5%) is 228.3 mA-h/g at the discharge/charge current density of 30 mA/g and the voltage range of 2.5-0.1 V after 30 cycles, which is 23.8 mA-h/g higher than that of pristine Li4TiO12. NiO does not inhibit the migration of lithium ions during the electrode reaction of Li4Ti5O12/NiO(5%) composite, and meanwhile it increases the conductivity and decreases the electrode polarization of Li4Ti5O12.关键词
锂离子电池/Li4Ti5O12/NiO/复合材料Key words
Lithium ion battery/ Li4Ti5O12/NiO/ composite material分类
信息技术与安全科学引用本文复制引用
赵立姣,刘开宇,陈星,罗金辉,蒋志军..Li4Ti5O12/NiO复合材料的制备及其电化学性能[J].中南大学学报（自然科学版）,2012,43(11):4205-4210,6.基金项目
国家自然科学基金资助项目(21071153,20976198) （21071153,20976198）
中南大学研究生学位论文创新基金资助项目(1114-713360010) （1114-713360010）
