Delphi Technologies, Inc.

Carolyn D Fleming

Karl Jacob Haltiner, Jr

Subhasish Mukerjee

Rick Daniel Kerr

Gary John Deangelis

Joseph M Keller

Allan Richard Wells

Arthur R Williams

Anthony J Derose

Stefan M Maczynski

During manufacture of an SOFC assembly, an inhibitor is included to prevent migration of silver braze during subsequent use of the SOFC assembly. The inhibitor may take any of several forms, either individually or in combination. Inhibitors comprehended by the present invention include, but are not limited to: a) a mechanical barrier that can be printed or dispensed onto one or more SOFC stack elements around the braze areas to prevent mechanically-driven migration; b) an electrically insulating feature in the electrolyte or interlayer over the electrolyte layer in the seal margins to prevent electrical potential-driven migration; and 3) chemical modification of the braze itself as by addition of an alloying metal such as palladium.

Inhibitor for prevention of braze migration in solid oxide fuel cells

A method for attaching a gasket to a non-gasketed bipolar plate for a PEM fuel cell, including the steps of making a pattern of the gasket; preparing the bipolar plate surface; priming the bipolar plate surface for adhesive according to the gasket pattern; aging the primer coat; screen-printing an adhesive coat onto the primer according to the gasket pattern; positioning the gasket face-down in a mirror-image fixture having channels in the form of the gasket; positioning the bipolar plate face down onto the fixture and gasket; applying pressure to the plate to adhere the gasket thereto in the adhesive-coated areas; removing the plate and gasket subassembly from the fixture; and curing the adhesive to provide a gasketed bipolar plate.

Process for forming an integral gasket on a bipolar plate for a PEM fuel cell

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Lima, NY, United States of America

Carolyn D Fleming