Abstract: Provided is a method for producing a non-aqueous electrolyte secondary battery. A negative electrode core of a negative electrode plate has front and back surfaces each with a surface roughness different from the other Rz. In a wound electrode body, a wound negative electrode core-exposed portion is formed at one end portion in the winding axis direction. In the wound negative electrode core-exposed portion, the surface roughness of the negative electrode core-exposed portion on the outer surface side is lower than the surface roughness on the inner surface side. A negative electrode current collector is placed on the outer surface of the wound negative electrode core-exposed portion and the negative electrode current collector is resistance-welded to the wound negative electrode core-exposed portion.

Abstract: Disclosed is a method for manufacturing a positive electrode including a positive electrode substrate made of aluminum foil and a positive electrode active material layer containing a positive electrode active material on the positive electrode substrate. This method includes the steps of forming the positive electrode active material layer on the positive electrode substrate; forming a protective layer on the positive electrode substrate; stretching an exposed region of the positive electrode substrate after the steps of forming the active material layer and the protective layer; and compressing the positive electrode active material layer after the stretching step.

Abstract: Disclosed is a method for manufacturing a positive electrode including a positive electrode substrate made of aluminum foil and a positive electrode active material layer containing a positive electrode active material on the positive electrode substrate. This method includes the steps of stretching a first exposed region of the positive electrode substrate with a first stretching roller disposed upstream; stretching a second exposed region of the positive electrode substrate with a second stretching roller disposed downstream; and compressing the positive electrode active material layer with a pair of compression rollers.

Abstract: Provided is a method for producing a non-aqueous electrolyte secondary battery. A negative electrode core of a negative electrode plate has front and back surfaces each with a surface roughness different from the other Rz. In a wound electrode body, a wound negative electrode core-exposed portion is formed at one end portion in the winding axis direction. In the wound negative electrode core-exposed portion, the surface roughness of the negative electrode core-exposed portion on the outer surface side is lower than the surface roughness on the inner surface side. A negative electrode current collector is placed on the outer surface of the wound negative electrode core-exposed portion and the negative electrode current collector is resistance-welded to the wound negative electrode core-exposed portion.

Abstract: Disclosed is a method for manufacturing a positive electrode including a positive electrode substrate made of aluminum foil and a positive electrode active material layer containing a positive electrode active material on the positive electrode substrate. This method includes the steps of forming the positive electrode active material layer on the positive electrode substrate; forming a protective layer on the positive electrode substrate; stretching an exposed region of the positive electrode substrate after the steps of forming the active material layer and the protective layer; and compressing the positive electrode active material layer after the stretching step.

Abstract: Disclosed is a method for manufacturing a positive electrode including a positive electrode substrate made of aluminum foil and a positive electrode active material layer containing a positive electrode active material on the positive electrode substrate. This method includes the steps of stretching a first exposed region of the positive electrode substrate with a first stretching roller disposed upstream; stretching a second exposed region of the positive electrode substrate with a second stretching roller disposed downstream; and compressing the positive electrode active material layer with a pair of compression rollers.