以金红石型TiO2和NaOH为原料，由水热反应制备Na2Ti6O13纳米管. 然后，在含有0.1 mol?L-1 NaOH的葡萄糖水溶液中反应4 h制得碳包覆的Na2Ti6O13纳米管. X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜(TEM)等分析表明，该碳包覆Na2Ti6O13纳米管外径约14 ~ 19 nm，内径约2 ~ 5 nm，长度为数百纳米，有一层厚度约为2 nm的碳层包覆在纳米管外壁. 以其作为锂离子电池负极材料，恒电流充放电测试表明，在50 mA?g-1电流密度下首周可逆容量达到161 mAh?g-1，循环100周后容量保持在147 mAh?g-1，相比于Na2Ti6O13纳米管，提高了20%以上. 电流密度升至1600 mA?g-1充放电，碳包覆Na2Ti6O13纳米管可逆容量仍有70 mAh?g-1左右，远高于Na2Ti6O13纳米管，表现出良好的倍率性能.

With rutile TiO2 and NaOH as starting materials, the Na2Ti6O13 nanotubes were prepared by a hydrothermal reaction. The carbon-coated Na2Ti6O13 nanotubes were obtained by treating the Na2Ti6O13 nanotubes for 4 h in glucose aqueous solutions containing 0.1 mol?L-1 NaOH. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microcopy (TEM). The results showed that the dimensions of carbon-coated Na2Ti6O13 nanotubes were 14 ~ 19 nm of outer diameter, 2 ~ 5 nm of inner diameter, and several hundreds nanometers of length with a carbon layer of about 2 nm being coated on outer surface of the nanotubes. As an anode material for lithium ion battery, the carbon-coated Na2Ti6O13 nanotubes exhibited an excellent cycle performance and high rate discharge capability compared with the Na2Ti6O13 nanotubes. At 50 mA?g-1, the reversible capacities of the carbon-coated Na2Ti6O13 nanotubes were 161 mAh?g-1 in the initial cycle and 147 mAh?g-1 after 100 cycles. When the discharge-charge current density was 1600 mA?g-1, the reversible capacity of the carbon-coated Na2Ti6O13 nanotubes still reached 70 mAh?g-1，much higher than that of Na2Ti6O13 nanotubes.