LITHIUM SECONDARY BATTERY

The present disclosure relates to a lithium secondary battery including a positive electrode that has a positive electrode current collector and a positive-electrode active material layer, a negative electrode that has a negative electrode current collector, an electrolyte solution, and a separator, in which the positive electrode current collector and/or the negative electrode current collector has a current collector film that includes a resin layer containing polyethylene terephthalate and a metal layer provided on each of both surfaces of the resin layer.