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Abstract

Disclosed in the present application are a negative electrode material and a preparation method therefor, a negative electrode plate and a battery. The negative electrode material has a core-shell structure, wherein the inner core is boron-doped graphite, and the shell comprises porous titanium oxide, amorphous carbon and a conductive agent. By coating the boron-doped graphite with the shell comprising the porous titanium oxide, the amorphous carbon and the conductive agent, all the components cooperate with each other, such that not only is the ion/electron transport rate of the negative electrode material significantly improved, and the conductivity improved, but intercalation of lithium ions of a lithium battery, which is formed by the negative electrode material, can also be improved, the loss of irreversible capacity of the battery is reduced, and the first efficiency and rate capability of the battery are improved. Especially, due to the use of the porous titanium oxide, the structure of the negative electrode material is also more stable, thereby significantly improving the cycle performance of the battery.

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First Claim