Negative pole piece, preparation method of negative pole piece and lithium ion battery

The invention provides a negative pole piece, a preparation method of the negative pole piece and a lithium ion battery. The negative pole piece comprises a negative current collecting layer; the lithiation bonding layer is attached to the inner surface of the negative electrode current collecting layer; wherein the lithiation degree of the side, away from the inner surface direction, of the lithiation bonding layer is larger than that of the side, close to the inner surface direction, of the lithiation bonding layer. According to the technical scheme disclosed by the invention, the lithiation bonding layer in the negative electrode plate can have a conductive gradient and a bonding gradient, so that the demolding problem of the negative electrode plate adopting a traditional bonding agent is solved, the dynamic rate of the battery is improved, the first coulombic efficiency of the lithium ion battery is improved, and the capacity of the lithium ion battery is improved. 本申请提供了一种负极极片、负极极片的制备方法及锂离子电池。负极极片包括：负极集