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US 8,137,828 B2Granted
Durable fuel cell membrane electrode assembly with combined additives
Assignee3M Innovative Properties Company
InventorsDaniel M. Pierpont, Steven J. Hamrock, Matthew H. Frey
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Abstract
A fuel cell membrane electrode assembly is provided comprising a polymer electrolyte membrane comprising a first polymer electrolyte and at least one manganese compound; and one or more electrode layers comprising a catalyst and at least one cerium compound. The membrane electrode assembly demonstrates an unexpected combination of durability and performance.
Claims16
A fuel cell membrane electrode assembly comprising:
- a) a polymer electrolyte membrane comprising a first polymer electrolyte and at least one manganese cation, wherein the distribution of manganese cations across the thickness of the polymer electrolyte membrane is uniform, and wherein the distribution of manganese cations throughout the polymer electrolyte membrane is uniform;
- and
- b) one or more electrode layers comprising a catalyst and at least one compound containing cerium and oxygen, wherein a total amount of compounds containing cerium and oxygen is between 0.1 and 1.0 percent by weight relative to the weight of catalyst present.
Dependencies are inferred from the claim text.