 A network of carbon nanotubes has been used as a form of electronically conducting nanowires in the cathode of a zinc-carbon battery.Using nanotube ink, the carbon cathode tube and manganese oxide electrolyte components of the zinc-carbon battery can be printed as different layers on a surface, over which an anode layer of zinc foil can be printed.This technology replaces charge collectors like metal sheets or films with a random array of carbon nanotubes.