Dual phase Li4Ti5O12-TiO2 hierarchical hollow microspheres as anode materials for high rate lithium-ion batteries

1st International Conference on New Material and Chemical Industry

材料科学;化学工业

Zhu, Kunxu^1 ; Hu, Guoxin^1

School of Mechanical and Power Engineering, Shanghai Jiao Tong University, Shanghai

200240, China^1

关键词: Capacity retention;    Contributing factor;    Electrochemical performance;    Grain boundary densities;    Hierarchical morphology;    Hollow microsphere;    Hydrothermal products;    Large scale productions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/167/1/012012/pdf
DOI  :  10.1088/1757-899X/167/1/012012

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Dual phase Li4Ti5O12-TiO2hierarchical hollow microspheres composed of nanosheets are successfully fabricated by the calcination of hydrothermal product obtained from lithium peroxotitanate complex solution. Low-cost industrial H2TiO3particles are chosen as titanium sources, which is significant for the inexpensive and large-scale production of Li4Ti5O12-TiO2composite material. The Li4Ti5O12-TiO2electrode yields excellent rate capability (151, 139 and 134 mA h g-1at 10, 20 and 25 C, respectively) and good cycling stability (96% capacity retention after 500 cycles at 10 C). The mesoporous hierarchical morphology and high grain boundary density are likely the contributing factors to the excellent electrochemical performance of Li4Ti5O12-TiO2composite.