Patent ID: 8962219
Filing Date: 2015-02-24
Classification: B22F,C22C,H01M,Y02E

Abstract:
1. An interconnect for a fuel cell stack, comprising: a riser channel opening for a gas extending through the interconnect; a rib area comprising a plurality of ribs defining flow channels between the ribs on a first major surface of the interconnect; a plenum for collecting the gas on the first major surface of the interconnect, wherein the plenum extends at least about 60% around the circumference of the riser channel opening, and the plenum comprises a groove in the first major surface that extends continuously around at least one side of the riser channel opening between the riser channel opening and the plurality of ribs in the rib area; a flat surface surrounding the riser channel on a second major surface of the interconnect, opposite the first major surface, wherein the plenum is sized and shaped to substantially match the flat surface adjacent to the riser channel opening; and a groove formed in the second major surface between an edge of the flat surface and a plurality of ribs extending from the second major surface.