C composites prepared

The present invention is directed to a complex manufacturing process currently Li4Ti5O12 / C composite and a disadvantage of high cost, there is provided the preparation of a Li4Ti5O12 / C composite material: titanium source in titanium dioxide, small molecule or a small molecule acid, lithium salt with carboxylic acid lithium salt after a mixture of inorganic lithium salt as a lithium source and a carbon source, a dispersant is added, thoroughly mixed by ball milling, and fired in a muffle furnace or tube furnace under an inert atmosphere, sintering method piecewise constant obtained Li4Ti5O12 / C composite. Li4Ti5O12 / C particle composite material was prepared in the present invention is 250nm ~ 350nm, having a good electrical conductivity and high rate capacity. Preparation process of the present invention is not only simple, low cost, and no external carbon source may be solid-phase sintering method step synthesis, easy to apply industrially.