CPC H01M 4/587 (2013.01) [H01M 4/364 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] | 2 Claims |
1. A non-aqueous electrolyte secondary battery comprising a negative electrode having a negative electrode active material layer, the negative electrode active material layer including graphite particles A and graphite particles B each as a negative electrode active material,
wherein the graphite particles A have a porosity due to closed pores of 1% to 5%, and the graphite particles B have a porosity due to closed pores of 8% to 15%, and
a mass ratio between the graphite particles A and the graphite particles B is 70:30 to 90:10.
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