Patent ID: 6248476
Filing Date: 2001-06-19
Classification: H01M,Y02E

Abstract:
An electrochemical metal air cell having an anode can, a cathode can, a sealing gasket, a metal anode, a separator, an electrolyte and an air cathode comprising:(a) an active layer comprising an admixture of active carbon, manganese dioxide and polytetrafluoroethylene;(b) a conductive air diffusion layer comprising an admixture of carbon black and polymeric materials; and(c) a current collecting substrate comprising a planar metal structure, said active layer being disposed on a first side of said air diffusion layer, said current collecting substrate being disposed with a first side on a second side of said air diffusion layer so it does not contact said active layer, and a second side of said current collecting substrate being disposed in contact with the bottom of the cathode can.