| US 7,597,983 B2 | ||
| Edge stress relief in diffusion media | ||
| Yeh-Hung Lai, Webster, N.Y. (US); Jeffrey A Rock, Fairport, N.Y. (US); Bhaskar Sompalli, Rochester, N.Y. (US); and Robert Milgate, Gloucester, Mass. (US) | ||
| Assigned to GM Global Technology Operations, Inc., Detroit, Mich. (US) | ||
| Filed on Aug. 25, 2004, as Appl. No. 10/925,754. | ||
| Prior Publication US 2006/0046124 A1, Mar. 02, 2006 | ||
| Int. Cl. H01M 2/00 (2006.01); H01M 2/08 (2006.01) | ||
| U.S. Cl. 429—34 [429/35; 429/36] | 21 Claims |
| 1. A fuel cell diffusion media comprising:
a first portion having a first thickness;
a gasket including an adhesive layer securing the gasket to the first portion having a gasket thickness; and
a second portion having a second thickness that is greater than a combined thickness of said first thickness and said gasket
thickness,
wherein said gasket provides a separation layer between said first portion and a membrane electrode assembly when compressed
in a fuel cell.
|