| US 7,550,018 B2 | ||
| Method of producing a sealing arrangement for a fuel cell stack and a sealing arrangement for a fuel cell stack | ||
| Hans-Rainer Zerfass, Taunusstein (Germany); Rudolf Henne, Böblingen (Germany); and Johannes Arnold, Pforzheim (Germany) | ||
| Assigned to ElringKlinger AG, Dettingen (Germany) | ||
| Filed on Sep. 07, 2006, as Appl. No. 11/516,962. | ||
| Claims priority of application No. 10 2005 045 053 (DE), filed on Sep. 21, 2005. | ||
| Prior Publication US 2007/0065707 A1, Mar. 22, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H01M 4/82 (2006.01); H01M 2/08 (2006.01) | ||
| U.S. Cl. 29—623.2 [429/36] | 74 Claims |
| 1. A method of producing an electrically insulating sealing arrangement for a fuel cell stack which comprises a plurality
of fuel cell units that succeed one another along a stack direction comprising the following method steps:
producing a ceramic metal layer from a mixture of a ceramic material and a metal material and/or a metal precursor;
producing a metallic layer in addition to the ceramic metal layer; and
at least partially converting the metal of the ceramic metal layer into an electrically non conductive metal compound so as
to produce a non conductive boundary layer.
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