Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 11, Issue 12, Pages 2332-2335Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2009.10.024
Keywords
TiO2 nanosheets; Anatase; Anode; Lithium-ion batteries; Lithium insertion
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Anatase TiO2 nanosheets with largely exposed (0 0 1) facets have been synthesized by a modified method. Exploitation of these nanosheets as a host structure for reversible lithium insertion/extraction has been investigated. It is found that these TiO2 nanosheets manifest much lower initial irreversible losses compared to other anatase TiO2 nanostructures, and excellent cycling performance at a charge-discharge rate as high as 20 C. The superior reversible lithium storage capability can be attributed to the ultrathin nanosheet structure: a large exposed effective area and a very short diffusion path. It thus attests the promising use of these anatase TiO2 nanosheets in high-power lithium-ion batteries. (C) 2009 Elsevier B.V. All rights reserved.
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