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US 8,568,936 B1Granted
Systems and methods for electrochemical surface area retention using hydrogen crossover
AssigneeNissan North America, Inc.
InventorsRameshwar Yadav, Gregory DiLeo
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Abstract
Systems and methods for electrochemical surface area retention of fuel cell catalyst using hydrogen crossover are disclosed. One fuel cell system embodiment comprises a fuel cell including an anode having a fuel gas supply and a cathode having an air supply and a controller. The controller is configured to detect a high voltage condition in the fuel cell and increase hydrogen partial pressure in the cathode when the high voltage condition is detected.
Claims20
A fuel cell system comprising:
- a fuel cell including an anode having a fuel gas supply and a cathode having an air supply;
- and
- a controller configured to:
- detect a high voltage condition in the fuel cell;
- and
- increase hydrogen partial pressure in the cathode when the high voltage condition is detected.
3 more elements
A method of operating a fuel cell system having a fuel cell comprising:
- detecting a high voltage condition in the fuel cell, the fuel cell comprising an anode having a fuel gas supply and a cathode having an air supply;
- and
- increasing hydrogen partial pressure in the cathode when the high voltage condition is detected.
Dependencies are inferred from the claim text.