Tailoring high-surface-area nanocrystalline TiO2 polymorphs for high-power Li ion battery electrodes

The crystallization and morphology of brookite and anatase titania (TiO2) wet e controlled using the urea-mediated hydrolysis/precipitation route in the presence of the Ti3+ ions Without the strong complexing agents and the non-hydrothermal conditions. simple alterations to the urea concentration led to the synthesis from brookite nanorods to anatase nanoflowers at a low temperature below 100 degrees C, whereas the BET specific sui face area evolved from 102 to 268 m(2) g(-1). respectively A possible formation mechanism was also proposed for these TiO2 nanostructures. The excellent reversible capacity and rate capability were achieved for the anatase nanoflowers because of the small crystallite size and significantly large surface area (C) 2010 Elsevier Ltd All rights reserved.