COLLECTOR FOR BIPOLAR LITHIUM ION SECONDARY BATTERIES

A current collector (3) for a bipolar lithium ion secondary battery includes: a first electrically conductive layer (3A) in which electrically conductive filler is added to a substrate containing imide group-containing resin; and a second electrically conductive layer (3B) that functions to isolate lithium ions. The second electrically conductive layer (3B) includes an isolation resin layer (3a) and a metal layer (3b), the isolation resin layer (3a) having a constitution in which electrically conductive filler is added to a substrate containing resin not containing imide group. The first electrically conductive layer (3A) is located in a manner such that a positive electrode active material layer is closer thereto than the second electrically conductive layer (3B).