TiO sub(2)(B) nanofiber bundles as a high performance anode for a Li-ion battery

TiO sub(2)(B) nanofiber bundles have been successfully synthesized by a facile method. Compared with conventional nanosized/nanostructured TiO sub(2)(B), the as-prepared sample displays a much lower surface area. It was demonstrated that the as-prepared TiO sub(2)(B) displays both good rate ability...

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Bibliographic Details
Published in:RSC advances 2013-02, Vol.3 (10), p.3352-3358
Main Authors: Guo, Ziyang, Dong, Xiaoli, Zhou, Dandan, Du, Yuanjin, Wang, Yonggang, Xia, Yongyao
Format: Article
Language:English
Subjects:
Battery
Charge
Lithium-ion batteries
Nanocomposites
Nanomaterials
Nanostructure
Titanium dioxide
Voltage
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Summary:TiO sub(2)(B) nanofiber bundles have been successfully synthesized by a facile method. Compared with conventional nanosized/nanostructured TiO sub(2)(B), the as-prepared sample displays a much lower surface area. It was demonstrated that the as-prepared TiO sub(2)(B) displays both good rate ability and long cycle life for Li-storage in a non-aqueous electrolyte. The TiO sub(2)(B)-based electrode can still maintain similar to 80% of its initial reversible capacity over 2000 cycles. In addition, the as-prepared TiO sub(2) was coupled with LiFePO sub(4) to form a rechargeable Li-ion battery, which shows good reversibility with a sloping voltage from 1.5 to 2.3 V, high power performance as well as a promising cycle life. Finally, the charge storage ability of the TiO sub(2)(B)/LiFePO sub(4) battery was compared with that of a Li sub(4)Ti sub(5)O sub(12)/LiFePO sub(4) battery. The inherent slope potential profile of the TiO sub(2)(B) anode effectively widens the charge storage voltage window of the TiO sub(2)(B)/LiFePO sub(4) battery, and thus makes the TiO sub(2)(B)/LiFePO sub(4) battery exhibit a better charge storage ability.
ISSN:2046-2069
DOI:10.1039/c2ra23336c