二次電池

Abstract

A secondary battery according to one embodiment of the present invention is provided with: a positive electrode that has a positive electrode core and a positive electrode mixture layer formed on said core; a negative electrode that has a negative electrode core and a negative electrode mixture layer formed on said core; and an electrolyte. The positive electrode mixture layer and the negative electrode mixture layer each includes a first mixture layer and a second mixture layer arranged on the first mixture layer. The curve ratio (τ2) of the second mixture layer is less than the curve ratio (τ1) of the first mixture layer.

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