A fuel cell assembly includes a first bipolar plate, a second bipolar plate, and a diffusion-electrode assembly. A first top surface of the first plate includes a first seal protruding upwardly and a first raised feed channel adjacent the first seal and pr...

A method of performing a leak check of a hydrogen supply valve of a fuel cell system includes supplying hydrogen to a fuel cell stack of the system for a predetermined time period closing the supply valve and purge valves, and opening a cathode exhaust val...