SECONDARY BATTERY AND MANUFACTURING METHOD THEREFOR, AND APPARATUS COMPRISING SECONDARY BATTERY

The present application relates to a secondary battery, a process for preparing the same and an apparatus containing the secondary battery. In particular, the secondary battery comprises a negative electrode plate, and the negative electrode plate comprises a negative current collector and a negative electrode film, wherein the negative electrode film comprises a first negative electrode film and a second negative electrode film, the first negative electrode film is disposed on at least one surface of the negative current collector and comprises a first negative electrode active material, the first negative electrode active material comprises graphite; the second negative electrode film is disposed on the first negative electrode film and comprises a second negative electrode active material, the second negative electrode active material comprises artificial graphite, and the second negative electrode active material comprises secondary particles and the number percentage of secondary particles in the second negative electrode active material S2 is greater than or equal to 20%. The secondary battery according to the present application good quick charging performance, cycle performance and high temperature storage performance at a high energy density.