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US 10,593,978 B2Granted
MEA seal structure containing catalyzed layer
AssigneeAudi AG
InventorsNed E. Cipollini, David A. Condit, Sergei F. Burlatsky, Thomas H. Madden, Wayde R. Schmidt
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Abstract
A membrane electrode assembly includes an anode, a cathode, a membrane disposed between the anode and the cathode, a catalyzed layer in at least one position selected from the group consisting of between the cathode and the membrane and between the anode and the membrane, and an edge seal positioned along an edge of the membrane electrode assembly, wherein the membrane and the catalyzed layer extends into the edge seal.
Claims12
A membrane electrode assembly, comprising:
- an anode including an anode catalyst layer having an anode catalyst layer porosity;
- a cathode including a cathode catalyst layer having a cathode catalyst layer porosity;
- a membrane disposed between the anode and the cathode;
- a catalyzed layer adjacent to the membrane, the catalyzed layer having a catalyzed layer porosity that is less than the anode catalyst layer porosity and less than the cathode catalyst layer porosity;
- a first gas diffusion layer adjacent to the anode;
- a second gas diffusion layer adjacent to the cathode;
- and
- an edge seal, the anode, the cathode, the membrane and the catalyzed layer extend into the edge seal, the membrane and the catalyzed layer extend further into the edge seal than the anode and cathode, and the first and second gas diffusion layers do not extend into the edge seal.
5 more elements
Dependencies are inferred from the claim text.