A novel non-organic hydrothermal/hydrolysis method for preparation of well-dispersed Li4Ti5O12

作者：Guo Xuefei; Wang Chengyang^*; Chen Mingming

来源：Materials Letters, 2012, 83: 39-41.

DOI：10.1016/j.matlet.2012.05.120

• Li4T15O12
• Hydro-thermal method
• Lithium-ion batteries
• High rate performance
• Metals and alloys
• Particles

Li4Ti5O12 ultrafine powders were synthesized by hydrothermal method using aqueous TiCl4 solution and LiOH center dot H2O as raw materials. The prepared particles comprise crystalline spinel-type Li4Ti5O12 with the size in the range of 100-400 nm without any agglomerate. Electrochemical measurements were then carried out to evaluate the anode performances of Li4Ti5O12 samples in lithium-ion batteries. The initial discharge capacity is 172.8 mAh g(-1) at 0.1 C and 142.4 mAh g(-1) at 10 C. It maintained its capacitance to as high as 122.2 mAh g(-1)(87.3% retention) at 10 C even after 100 cycles, indicating a good rate and cyclic performance. This novel non-organic hydrothermal method presented an economical, facile and green pathway for Li4Ti5O12 as anode material in lithium-ion batteries of high power densities.

• 出版日期2012-9-15
• 单位天津大学