| US 7,579,116 B2 | ||
| Fluoride ion scavenger for fuel cell components | ||
| Andrew M. Mance, Royal Oak, Mich. (US); Belabbes Merzougui, Warren, Mich. (US); and Ion C. Halalay, Grosse Pointe, Mich. (US) | ||
| Assigned to GM Global Technology Operations, Inc., Detroit, Mich. (US) | ||
| Filed on Apr. 01, 2005, as Appl. No. 11/97,457. | ||
| Prior Publication US 2006/0222921 A1, Oct. 05, 2006 | ||
| Int. Cl. H01M 6/18 (2006.01); H01M 6/04 (2006.01); H01M 6/16 (2006.01); H01M 4/58 (2006.01); H01M 8/08 (2006.01) | ||
| U.S. Cl. 429—315 [429/314; 429/328; 429/188; 429/218.1; 429/46] | 2 Claims |
| 1. A fuel cell comprising:
an acidic polymer electrolyte membrane sandwiched between an anode and a cathode where at least one of the acidic polymer
electrolyte membrane, the anode, or the cathode comprise fluorine atoms susceptible to conversion to fluoride anions in operation
of the cell; and
an azacrown molecule serving as a fluoride anion sequestering agent that binds the fluoride anions in the acidic environment
of the cell, in which the azacrown molecule is 1,4,7,10-cycloazadodecane.
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