Patent ID: 7323089
Filing Date: 2008-01-29
Classification: C25B,Y02E

Abstract:
1. A bonded membrane assembly for electrolysis of water comprising; (a) a solid polymer electrolyte membrane; (b) an oxygen electrode bonded to one side of said solid polymer electrolyte membrane; (c) a hydrogen electrode bonded to the other side of said solid polymer electrolyte membrane; (d) wherein said oxygen electrode includes a porous sheet-shaped carbon element plated with iridium and a first coating layer comprising a mixture of carbon and a resin for a solid polymer membrane on the side of the sheet-shaped carbon element that contacts the solid polymer electrolyte membrane; (e) the hydrogen electrode comprises a porous sheet-shaped carbon element and a second coating layer comprising a mixture of carbon and a resin for a solid polymer membrane on said sheet-shaped carbon element positioned in contact with the solid polymer electrolyte membrane; and (f) a third coating layer comprising at least one of a Pt (alloy) and carbon carrying a Pt (alloy) and a resin for a solid polymer membrane on said second coating layer.