Shutdown strategy to avoid carbon corrosion due to slow hydrogen / air penetration rates

摘要

A fuel cell system comprising a fuel cell stack having a plurality of fuel cells, each of the fuel cells having an electrolyte membrane disposed between an anode and a cathode, an anode supply manifold in fluid communication with the anodes of the fuel cells, the anode supply manifold providing fluid communication between a hydrogen source and the anodes; an anode discharge manifold in fluid communication with the anodes of the fuel cells; and a blower in fluid communication with the anodes of the fuel cells, the blower controlling fluid flow through the anodes of the fuel cells after the fuel cell system is turned off.