Fuel cell membrane electrode assembly
Assignee3M Innovative Properties Company
InventorsMatthew H. Frey, Steven J. Hamrock, Gregory M. Haugen, Phat T. Pham
Life of this patent
Estimating the term…
Abstract
Fuel cell membrane electrode assemblies and fuel cell polymer electrolyte membranes are provided comprising bound anionic functional groups and polyvalent cations, such as Mn or Ru cations, which demonstrate increased durability. Methods of making same are also provided.
Claims21
A method of making a polymer electrolyte membrane comprising the steps of:
- a) providing a polymer electrolyte comprising bound anionic functional groups;
- b) adding 0.001 to 0.5 charge equivalents of one or more salts selected from the group consisting of manganese salts, based on the molar amount of said bound anionic functional groups;
- c) forming a membrane comprising said polymer electrolyte.
A fuel cell membrane electrode assembly comprising at least one polymer that comprises bound anionic functional groups, wherein at least a portion of said anionic functional groups are in acid form and at least a portion of said anionic functional groups are neutralized by manganese cations.
Dependencies are inferred from the claim text.