Anode material, preparation method thereof and lithium ion battery

Abstract

The present disclosure relates to an anode material and a preparation method thereof, and a lithium ion battery. The anode material includes a carbon substrate and an active material, the carbon substrate has pores, and at least a part of the active material is distributed within the pores of the carbon substrate. The carbon dioxide in the pores of the carbon substrate in the anode material of the present disclosure may quickly dissolve in the electrolyte and promote the electrolyte to enter the pores of the anode material. Meanwhile, during the lithium intercalation process, the dissolved carbon dioxide may reduce the decomposition rate of FEC, reduce the formation of loose and irregular SEI, increase the bonding effect between fluorine in the lithium fluoride SEI and lithium in the lithium-silicon alloy, thereby improving the capacity and initial coulomb efficiency of the anode material.

Dependencies are inferred from the claim text.