×

Membrane-electrode-assembly with solid polymer electrolyte

  • US 20020071980A1
  • Filed: 05/31/2001
  • Published: 06/13/2002
  • Est. Priority Date: 05/31/2000
  • Status: Active Grant
First Claim
Patent Images

1. A solid polymer electrolyte membrane-electrode-assembly comprising an anode-side gas diffusion layer, an anode catalyst region, a solid polymer electrolyte membrane, a cathode catalyst region, and a cathode-side gas diffusion layer in a sequential arrangement, wherein either the anode catalyst region or the cathode catalyst region or both comprise (a) at least two catalyst layers wherein one catalyst layer has a side attached to said solid polymer electrolyte membrane and another catalyst layer has a side attached to one of said cathode-side or anode-side gas diffusion layers, and wherein an interface between said two catalyst layers lies between the solid polymer electrolyte and said one of the gas diffusion layers;

  • (b) wherein said catalyst layers each comprise at least one catalyst and at least one ion-conducting material; and

    (c) wherein said at least one catalyst in each of said at least two catalyst layers comprise substantially the same material.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×