Abstract
Li4Ti5O12 nanorod coated by anatase-TiO2 is in situ synthesized via a microemulsion-assisted hydrothermal method followed by heat treatment at 550°C in air. Compared with pure Li4Ti5O12, Li4Ti5O12 nanorod coated by anatase-TiO2 presents much improved electrochemical characteristics in terms of high specific capacity, excellent rate capability and cyclic stability (96.0% of initial capacity at a current density of 1.75Ag−1 up to 100cycles). Acting as a perfect nanocoating layer, anatase-TiO2 contributes some capacity and gives an enhanced performance to the Li4Ti5O12 electrode. All the results suggest that Li4Ti5O12 nanorod coated by anatase-TiO2 could be suitable for use as a high-rate anode material for lithium-ion batteries.
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