Patent ID: 6316137
Filing Date: 2001-11-13
Classification: H01M,Y02E,Y10T

Abstract:
A fuel cell system comprising:a fuel cell stack comprising flow plates including openings to form a coolant manifold passageway that communicates a coolant and a reactant manifold passageway,a first gasket to form a seal around the coolant passageway between an adjacent pair of the plates, the first gasket being formed from a material that is compatible with the coolant;a second gasket to form a seal around the reactant manifold passageway between said adjacent pair of plates, the second gasket being formed from another material that is incompatible with the coolant; anda pump system to circulate the coolant through the fuel cell stack, the coolant being substantially electrically non-conductive and having a freezing point substantially below the freezing point of water.