Anatase TiO2 nanosheet : an ideal host structure for fast and efficient lithium insertion/extraction

• Main Authors: Chen, Jun Song, Lou, David Xiong Wen
• Other Authors: School of Chemical and Biomedical Engineering
• Format: Article
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/95584; http://hdl.handle.net/10220/9154
• Institution: Nanyang Technological University

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.