Electrospinning synthesis of spinel Li4Ti5O12 and its characterization

2015 Global Conference on Polymer and Composite Materials

材料科学;化学

Li, Xiao^1 ; Yang, Kai^2 ; Gao, Fei^2 ; Hu, Chen^2 ; Liu, Hao^2 ; Li, Dahe^2 ; Lina, Wang^2

University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing

100083, China^1

China Electric Power Research Institute, Haidian District, Beijing

100192, China^2

关键词: Calcination conditions;    Charge discharge tests;    Diameter distributions;    Discharge capacities;    Electrochemical performance;    Electrode material;    Electrospinning method;    Precursor solutions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/87/1/012098/pdf
DOI  :  10.1088/1757-899X/87/1/012098

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The electrode material Li4Ti5O12(LTO) with excellent electrochemical properties was synthesized by an electrospinning method using Ti(OCH(CH3)2)4and CH3COOLi as raw materials. The effects of the solution viscosity and calcination conditions on the structure and electrochemical performance of LTO were investigated by scanning electron microscopy (SEM), X-ray diffractometry (XRD) and charge-discharge test. The optimal synthesis condition is 11 cP for the viscosity of the precursor solution, 800 °C for 12h with the heating rate of 1°C min-1for the calcination of precursor filaments. The product has a narrow diameter distribution and small amounts of impurities. The discharge capacity of LTO sample is 199.51 mAhg-1.