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US 2022/0102745 A1Published application
Membrane electrode assembly with enhanced start-up and shut-down durability
AssigneeHyzon Motors Inc.
InventorsRajesh Bashyam, Zhai Jun
Life of this patent
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Abstract
A membrane electrode assembly (MEA) includes a membrane, a cathode catalyst layer, a cathode co-catalyst layer including a hydrogen reservoir, an anode catalyst layer, and an anode co-catalyst layer including a hydrogen reservoir. The anode co-catalyst layer and the cathode co-catalyst layer cap a cathode potential at lower than 1.5V and an anode potential at lower than 1.0V. The anode co-catalyst layer and the cathode co-catalyst layer can include a platinum doped rare earth oxide, such as platinum doped cerium oxide.
Claims20
A membrane electrode assembly, comprising:
- a proton exchange membrane disposed between two electrode layers;
- and
- a noble metal doped rare-earth oxide.
A method of operating a fuel cell, the method comprising:
- providing the fuel cell including a membrane electrode assembly, the membrane electrode assembly including:
- a proton exchange membrane disposed between two electrode layers;
- a noble metal doped rare-earth oxide;
- and
- switching the fuel cell from one of a start-up state and a shut-down state to an other of the start-up state and the shut-down state, wherein the noble metal doped rare-earth oxide provides a reservoir of hydrogen.
2 more elements
Dependencies are inferred from the claim text.