Electrochemical properties of the TiO2(B) powders ball mill treated for lithium-ion battery application.
Chem Cent J
; 7(1): 174, 2013 Nov 06.
Article
em En
| MEDLINE
| ID: mdl-24196343
ABSTRACT
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.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Chem Cent J
Ano de publicação:
2013
Tipo de documento:
Article