Electrochemical properties of the TiO2(B) powders ball mill treated for lithium-ion battery application

Chemistry Central Journal

Bo-Ra Kim²  Kang-Seop Yun²  Hee-June Jung²  Seung-Taek Myung²  Sang-Chul Jung³  Wooseung Kang¹  Sun-Jae Kim² 

[1] Department of Metallurgical & Materials Engineering, Inha Technical College, Incheon 402-752, Korea

[2] Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea

[3] Department of Environmental Engineering, Sunchon National University, Suncheon, Jeonnam 540-742, Korea

关键词: Hydrothermal method;    Lithium-ion battery;    Ball-milling;    Anode materials;    TiO2(B);   

Others  :  787820
DOI  :  10.1186/1752-153X-7-174

 received in 2013-08-31, accepted in 2013-10-24,  发布年份 2013

【 摘 要 】

Background

Belt or wire shaped TiO₂(B) particles were synthesized for lithium ion battery application by a hydrothermal and heat treatment process. In order to facilitate TiO₂(B)/C composites fabrication, the synthesized TiO₂(B) particles were crushed into smaller sizes by ball milling.

Results

Ball mill treated TiO₂(B) particles of less than 1.0 μm with a fraction of anatase phase, compared to as-synthesized TiO₂(B) particles with about 24 μm in average particle size, showed a significant improvement in the electrochemical properties. They showed a much improved stability in the charge–discharge cycles and irreversibility. They maintained about 98% of the initial capacity during 50 cycles while as-synthesized sample before ball mill treatment showed a gradual decrease in the capacity with the cycles. The irreversibility of 12.4% of as-synthesized sample was also greatly improved to 7% after ball milling treatment.

Conclusions

Our results indicate ball mill treatment can be an economical way to improve electrochemical properties of TiO₂(B) anode materials for lithium ion battery application.

【 授权许可】

   
2013 Kim et al.; licensee Chemistry Central Ltd.

【 图 表 】

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