SECONDARY BATTERY AND NEGATIVE ELECTRODE CURRENT COLLECTOR

A secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte having lithium ion conductivity. The negative electrode includes a negative electrode current collector. The negative electrode current collector includes a resin film, and a transition metal layer laminated with the resin film. The resin film includes a base resin layer, and a surface resin layer, and at least the surface resin layer contains a nitrogen-containing resin.