Anode material with a surface joined to an adhesive, preparation method therefor, and use thereof

Abstract

Provided are an anode material with a surface joined to an adhesive, a preparation method therefor, and use thereof. The anode material with a surface joined to an adhesive includes the anode material and the adhesive joined to the surface of the anode material, where the adhesive includes a first polymer and a second polymer, polymerized monomers of the first polymer include any one or a combination of at least two of an acrylate monomer, an acrylamide monomer, an acrylonitrile monomer, or a styrene monomer, the second polymer is a two-component polymer, and the anode material includes any one of a silicon-carbon anode material, a silicon-oxygen anode material, an artificial graphite anode material, or a natural graphite anode material. The first polymer and the second polymer are joined to the surface of the anode material so that the problems of expansion and aging of the anode material in a cycling process can be alleviated, and the adhesion between active substances of an anode and between the active substances of the anode and a current collector can be increased, thereby improving the overall performance of the material. Thus, a lithium-ion battery containing the anode material with a surface joined to an adhesive has high initial coulombic efficiency and cycle stability.

Dependencies are inferred from the claim text.