Graphite composite negative electrode material, preparation method therefor and application thereof

A graphite composite negative electrode material, the graphite composite negative electrode material comprises a core and a coating layer which is coated on the surface of the core, the core comprises graphite material, and the coating layer comprises titanium niobate, carbon nanotubes, and amorphous carbon;

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• the graphite composite negative electrode material is prepared by the following methods, which comprises:
• (1) mixing a titanium source, a niobium source, an asphalt and a solvent, spray drying and sintering to obtain a pre-coating material;
• (2) mixing the pre-coating material in step (1) with a solution of a metal catalyst to obtain a mixture, and compositing a carbon source with the mixture in a manner of vapor deposition to obtain a coating layer material;
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• (3) mixing the coating layer material in step (2) with a graphite material, granulating, and carbonizing to obtain the graphite composite negative electrode material.