SECONDARY BATTERY, METHOD FOR MANUFACTURING THE SAME, AND APPARATUS CONTAINING THE SAME

DRIVE March 24, 2022
Source
The present application relates to a secondary battery, a method for manufacturing the same and an apparatus containing the same. Specifically, in the secondary battery the first negative electrode film comprises a first negative electrode active material, the second negative electrode film comprises a second negative electrode active material. The first negative electrode active material comprises natural graphite and satisfies: 6 mΩ.cm≤A≤12 mΩ.cm, the second negative electrode active material comprises artificial graphite and satisfies: 13 mΩ.cm≤B≤20 mΩ.cm, A is a powder resistivity of the first negative electrode active material tested at a pressure of 8 Mpa, and B is a powder resistivity of the second negative electrode active material tested at a pressure of 8 Mpa. The secondary battery of the present application can have better kinetic performance and longer cycle life while maintaining higher energy density.

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