NEGATIVE ELECTRODE SHEET AND PREPARATION METHOD THEREFOR, ELECTROCHEMICAL DEVICE, AND ELECTRONIC DEVICE

The present application relates to a negative electrode sheet and a preparation method therefor, an electrochemical device, and an electronic device. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer comprises a first active material layer and a second active material layer, wherein the first active material layer is disposed on the surface of the negative electrode current collector, and the first active material layer comprises a plurality of first through holes which penetrate through the first active material layer along the thickness direction of the negative electrode current collector and are disposed at intervals; the second active material layer is at least disposed on the surface of the negative electrode current collector; the first active material layer is disposed between the second active material layer and the negative electrode current collector; the first active material la