| US 7,588,857 B2 | ||
| Chalcogen catalysts for polymer electrolyte fuel cell | ||
| Nicolas Alonso-Vante, Buxerolles (France); Piotr Zelenay, Los Alamos, N. Mex. (US); Jong-Ho Choi, Los Alamos, N. Mex. (US); Andrzej Wieckowski, Champaign, Ill. (US); and Dianxue Cao, Urbana, Ill. (US) | ||
| Assigned to Los Alamos National Security, LLC, Los Alamos, N. Mex. (US) | ||
| Filed on Dec. 05, 2005, as Appl. No. 11/295,361. | ||
| Prior Publication US 2007/0128501 A1, Jun. 07, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H01M 4/00 (2006.01) | ||
| U.S. Cl. 429—44 [429/42] | 12 Claims |
| 1. A membrane electrode assembly, the membrane electrode assembly comprising:
a. an ionomeric membrane;
b. an anode disposed on a first surface of the ionomeric membrane; and
c. a cathode catalyst disposed on a second surface of the ionomeric membrane, the cathode catalyst comprising:
i. a support comprising at least one transition metal in elemental form capable of reducing oxygen;
ii. at least one chalcogen in elemental form disposed on at least a portion of a surface of the support; and
iii. a recast ionomer dispersed throughout the support.
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