Non-aqueous electrolyte secondary battery and method for producing non-aqueous electrolyte secondary battery

The non-aqueous electrolyte secondary battery according to an aspect of the present disclosure comprises: a wound electrode body on which a strip-like positive electrode and a strip-like negative electrode are each wound with a separator interposed therebetween; and an outer package accommodating the electrode body. The positive electrode comprises a positive current collector and a positive mixture layer that is formed on the positive current collector and contains at least a positive active material and a binder. The negative electrode comprises a negative current collector and a negative mixture layer that is formed on the negative current collector and contains at least a negative active material and a binder. At least one of the positive mixture layer and the negative mixture layer has a binder content that is higher on a leading end than on a terminal end.