`
`1.
`
`A non-aqueous electrolyte secondary battery comprising a negative electrode
`
`having a negative electrode active material layer, the negative electrode active material
`
`laver 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 5%orless,
`
`and the graphite particles B have a porosity due to closed pores of 8%to 20%, and
`
`a mass ratio between the graphite particles A and the graphite particles B is 70:30to
`
`10
`
`90:10.
`
`2.
`
`The non-aqueous electrolvte secondary battery according to claim 1, whereimthe
`
`negative electrode active material layer has a packing density of 1.2 9/cm? to 1.7 g/cm’.
`
`15
`
`- 39 -
`
`
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