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APPARATUS AND METHOD FOR CONTROLLING VARIABLE POWER CONDITIONS IN A FUEL CELL

  • US 20110269039A1
  • Filed: 10/14/2009
  • Published: 11/03/2011
  • Est. Priority Date: 10/15/2008
  • Status: Active Grant
First Claim
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1. A fuel cell comprising:

  • an anode having an inner face and an outer face fluidly communicable with a fuel;

    a cathode having an inner face ionically communicable with and physically separated from the anode inner face, and having an outer face fluidly communicable with an oxidant, the cathode inner face being ionically communicable with the anode inner face by an electrolyte; and

    at least one movable guard movable over at least one of the anode outer face, cathode outer face, anode inner face, and cathode inner face;

    the guard having a structure sufficient to block at least part of one or more of the anode'"'"'s communication with the fuel, the cathode'"'"'s communication with the oxidant, and the ionic communication between the anode and cathode thereby reducing a maximum potential active area of an electrode surface to an effective active area of the electrode surface, such that a power output of the fuel cell is reduced.

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