Abstract
Mesoporous anatase TiO2 nanoparticles have been synthesized by a hydrothermal method using a tri-block copolymer as a soft template. The resulting TiO2 materials have a high specific surface area of 230 m 2 /g, a predominant pore size of 6.8 nm and a pore volume of 0.404 mL/g. The electrochemical properties of mesoporous anatase TiO2 for lithium ion battery (LIB) anode materials have been investigated by typical coin cell tests. The initial discharge capacity of these materials is 240 mAh/g, sig- nificantly higher than the theoretical capacity (175 mAh/g) of LTO (Li4Ti5O12). Although the discharge capacity decreases with the C-rate increase, the mesoporous TiO2 is very promising for LIB anode because the surface for the Li insertion is presented significantly with mesopores. Nitrogen doping has a certain effect to control the capacity decrease by improving the electron transport in TiO2 framework.
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