Patent ID: 7465510
Filing Date: 2008-12-16
Classification: H01M,Y02E

Abstract:
1. A fuel cell power plant, comprising: a plurality of fuel cells, each cell having an anode, a cathode and a proton exchange membrane disposed between the anode and the cathode; fuel reactant flow fields on an anode side of said membrane and oxidant reactant flow fields on a cathode side of said membrane, each of said flow fields having an inlet and an outlet; a source of hydrogen-rich fuel gas, said hydrogen-rich fuel gas being applied to said fuel reactant flow fields; a source providing oxidant reactant gas to said oxidant flow fields; an impeller connected to at least some of said fuel flow field outlets for pumping partially depleted fuel to at least some of said fuel flow field inlets; said impeller comprising a compressor of a turbocompressor, a turbine of which is driven by said hydrogen-rich fuel gas.