Lithium-ion secondary battery

Abstract

A lithium-ion secondary battery includes a stacked body in which a negative electrode including lithium and a positive electrode are stacked with an electrolyte therebetween. The positive electrode includes a positive-electrode current collector foil, a coating layer stacked on the positive-electrode current collector foil, and a positive-electrode active material layer stacked on the coating layer. An insulating member is disposed so as to cover a region in which the positive-electrode active material layer is not stacked on a surface of the coating layer facing the negative electrode in a stacking direction, and a region in which the coating layer is not stacked on a surface of the positive-electrode current collector foil facing the negative electrode in the stacking direction. The insulating member covers an end portion of the coating layer and is configured to prevent overlap with the positive-electrode active material layer in the stacking direction.

Dependencies are inferred from the claim text.