CURRENT COLLECTOR OF SECONDARY BATTERY AND SECONDARY BATTERY

The present disclosure provides a current collector of a secondary battery in which the current inside the battery is easily blocked at the time of inside short circuit, and in which the capacity retention rate and the decreasing rate of the electric resistance are outstanding. The current collector herein disclosed includes a laminate structure in which a resin layer and a metal layers formed on the both surfaces of the resin layer are laminated. The surface of the metal layer includes a rough surface part provided with a plurality of protruding parts and a plurality of recessed parts. On the rough surface part, a resin coat layer is formed, and at least one part of the protruding part among the plurality of protruding parts includes an exposed part that is exposed from the resin coat layer.