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US 2023/0056498 A1Published application
Antioxidant for fuel cells to improve durability
AssigneeToyota Motor Engineering & Manufacturing North America, Inc.
InventorsLiang Wang, Hongfei Jia, Naoki Nakamura
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Abstract
Disclosed herein are membrane-electrode assemblies and fuel cells comprising an anode comprising a first catalyst; a cathode comprising a second catalyst; and a proton exchange membrane between the anode and cathode; wherein at least one of the proton exchange membrane, anode, and cathode comprise an antioxidant comprising yttrium doped cerium oxide and a metal doped cerium oxide that has a faster release time of cerium ions compared to yttrium doped cerium oxide.
Claims20
A membrane-electrode assembly comprising:
- an anode comprising a first catalyst;
- a cathode comprising a second catalyst;
- and
- a proton exchange membrane between the anode and cathode;
- wherein at least one of the proton exchange membrane, anode, and cathode comprise an antioxidant comprising yttrium doped cerium oxide and a metal doped cerium oxide that has a faster release time of cerium ions compared to yttrium doped cerium oxide.
2 more elements
A fuel cell comprising:
- a membrane-electrode assembly comprising a proton exchange membrane, an anode comprising a first catalyst, and a cathode comprising a second catalyst, the proton exchange membrane positioned between the anode and cathode;
- a first microporous layer contacting the anode;
- a second microporous layer contacting the cathode;
- an anode diffusion layer contacting the first microporous layer;
- a cathode diffusion layer contacting the second microporous layer;
- a first flow channel contacting the anode diffusion layer;
- and
- a second flow channel connecting the cathode diffusion layer;
- wherein at least one of the proton exchange membrane, anode, cathode, first microporous layer and the second microporous layer comprise an antioxidant comprising yttrium doped cerium oxide and a metal doped cerium oxide that has a faster release time of cerium ions compared to yttrium doped cerium oxide.
6 more elements
Dependencies are inferred from the claim text.