SECONDARY BATTERY

In one exemplary embodiment, a secondary battery is provided. The secondary battery includes a positive electrode, a first separator disposed on a side of one surface of the positive electrode, and a first negative electrode disposed to be spaced apart from the positive electrode in a lamination direction with the first separator interposed therebetween, where the first negative electrode includes a first current collector, the first current collector is configured with a first resin layer sandwiched between a pair of first conductive layers, and the pair of first conductive layers each have a thickness of 0.3 μm or more and less than 1.9 μm.