▎ 摘　　要

NOVELTY - Negative pole piece comprises a negative electrode carbon-coated current collector and a negative electrode active material layer (3), where the negative electrode carbon-coated current collector comprising a conductive layer (1) and a carbon-coated layer. The carbon-coated layer (2) on the negative electrode carbon-coated current collector and the negative electrode active material layer are cross-embedded in a structure of mutual rivets. USE - Negative pole piece used lithium ion battery (claimed). ADVANTAGE - The negative pole piece reduces the electrode pole piece of the interface resistance, and lithium ion battery in the circulation process of the pole piece pulverization phenomenon. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a negative pole piece, which involves: coating carbon-coated layer on at least one side of the conductive layer, roughening carbon-coated layer with a solvent, coating negative electrode active material layer on the carbon-coated layer, drying and rolling to obtain a product. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a negative pole piece. 1Conductive layer 2Carbon-coated layer 3Negative electrode active material layer