Negative pole piece, electrochemical device and electric equipment

The invention relates to the technical field of batteries, and discloses a negative pole piece, an electrochemical device and electric equipment. The negative pole piece comprises a first active material layer, a first current collector and a second active material layer; the first active material layer comprises a first coating and a second coating arranged between the first coating and the first current collector, the first end of the second coating exceeds the first end of the first coating in the first direction, and the first active material layer is provided with a first single-layer part; and/or in the second direction, the second end of the second coating exceeds the second end of the first coating, and the first active material layer is provided with a second single-layer part; the first direction is opposite to the second direction. The negative pole piece is in the first direction or the second direction, and the second coating exceeds the first coating, so that the problem that the first current c