Secondary battery, process for preparing same, and apparatus comprising secondary battery

A secondary battery, comprising a negative electrode plate, wherein the negative electrode plate comprises a negative electrode current collector and a negative electrode film;

• the negative electrode film comprises a first negative electrode coating layer and a second negative electrode coating layer;
• the first negative electrode coating layer is disposed on at least one surface of the negative electrode current collector and comprises a first negative electrode active material, the first negative electrode active material comprises graphite, and the first negative electrode active material comprises or does not comprise a silicon-based material;
• the second negative electrode coating layer is disposed on a surface of the first negative electrode coating layer and comprises a second negative electrode active material, and the second negative electrode active material comprises artificial graphite and a silicon-based material;
• the silicon-based material is present at a mass percentage denoted as W1 in the first negative electrode active material, the silicon-based material is present at a mass percentage denoted as W2 in the second negative electrode active material, and the negative electrode plate satisfies:
• W2≥W1.