NEGATIVE ELECTRODE SHEET, PREPARATION METHOD THEREOF AND LITHIUM ION BATTERY CONTAINING THE SAME

The present disclosure provides a negative electrode sheet, a preparation method thereof and a lithium ion battery containing the same. The negative electrode sheet includes a negative electrode current collector, where the negative electrode current collector includes a single-sided coating area and a double-sided coating area; in the double-sided coating area, second coating layers are disposed on both side surfaces of the negative electrode current collector, respectively, wherein each of the second coating layers includes a first negative electrode active material layer and a second negative electrode active material layer, the second negative electrode active material layer is disposed on a surface of the negative electrode current collector, and the first negative electrode active material layer is disposed on a surface of the second negative electrode active material layer. The lithium ion battery containing the negative electrode sheet has the following effects: (1) the problem of lithium deposition of a single-sided coating area of a negative electrode of a regular winding structural lithium ion battery can be effectively improved, thereby increasing a circulation lifetime of the lithium ion battery, and reducing a circulation inflation of the lithium ion battery; (2) a compaction density of a negative electrode can be increased and an energy density of a battery cell can be increased; and (3) a dynamic property of the negative electrode and a fast-charging capacity of the battery can be improved.