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Dalton Trans. 2013 Mar 28;42(12):4278-84. doi: 10.1039/c2dt32251j.

Controlled synthesis and Li-electroactivity of rutile TiO2 nanostructure with walnut-like morphology.

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  • 1School of Materials Science and Engineering, Seoul National University, Daehak-dong, Kwanak-gu, Seoul 151-744, S. Korea.

Abstract

Herein, we report on the synthesis of phase-pure rutile walnut-like TiO(2) (W-TiO(2)) spheres composed of single-crystalline nanorod-building blocks using a surfactant-free non-aqueous acidic modified "benzyl alcohol route". Based on the various HCl concentration- and reaction time-dependent experiments, an effect of hydrochloric acid on the phase formation mechanism in a non-aqueous system is suggested. As anodes for Li-ion batteries, the W-TiO(2) sphere electrodes exhibited superior cycling performance at a rate of 0.2 C without any conducting layers coated onto the anodes; this result is attributed to their high crystallinity and large surface area.

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