Patent ID: 7190568
Filing Date: 2007-03-13
Classification: H01M,Y02E,Y10T

Abstract:
1. A fuel cell stack comprising a plurality of planar interleaved fuel cells and interconnects and comprising a contact layer disposed between at least one electrode of a fuel cell and an adjacent interconnect, the contact layer comprising at least two outer layers and a central layer of electrically conductive materials, wherein the central layer comprises, prior to a first thermal cycle, a stress relief layer comprised of: (a) fine or coarse particles of a conductive ceramic material combined with particles of a pore forming material; (b) a layer of a pore forming material; (c) two separately formed layers of coarse particles of a conductive ceramic material pressed together; or (d) two separately formed layers of coarse particles of a conductive ceramic wherein one or both layers comprise particles of a pore forming material.