Abstract
A large quantity of spinel Li 4 Ti 5 O 12 nanowires was prepared by firing a mixture of TiO 2 ·1.25H 2 O nanowires and Li acetates at 800°C for 3 h. The spinel nanowire had a diameter of 150 nm, which was similar to that of TiO 2 ·H 2 O nanowire. The Brunauer-Emmett-Teller (BET) surface area of the spinel wire was 38 m 2 /g, which was seven times higher than that of fine particles, which had a BET surface area of only 4.6 m 2 /g. The first discharge capacity was 165 mAh/g at a 0.1 C rate and 93% capacity was retained even after a 10 C rate. We believe that these results were associated with a more active surface in the nanowires which facilitated faster lithium diffusion due to shorter pathways.
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