Secondary battery and method for producing secondary battery

摘要

A secondary battery is provided with a negative electrode sheet including a negative active material layer including negative active material particles. The negative active layer contains, as the negative active material particles, graphite particles formed from graphite and amorphous carbon particles formed from amorphous carbon. The difference (ΔS)(=Sb−Sa) in specific surface area between the specific surface area (Sb) of the amorphous carbon particles and the specific surface area (Sa) of the graphite particles is −0.3 to 2.6 m2/g.

主权项

1. A secondary battery including a negative electrode sheet having a negative active material layer containing negative active material particles, wherein
the negative active material layer contains, as the negative active material particles, graphite particles made of graphite and amorphous carbon particles made of amorphous carbon, and a specific surface area Sb of the amorphous carbon particles and a specific surface area Sa of the graphite particles are determined so that a difference ΔS(=Sb−Sa) between the specific surface areas is 0 to 2.1 m2/g, wherein 4.0 m2/g