1
Kevin Michael Colbow, Marian van der Geest, Cindy J Longley, Jens Müller, Joy Roberts, Jean St Pierre, Peter Urban, Regina Wezel, David P Wilkinson, Jiujun Zhang: Method and apparatus for operating an electrochemical fuel cell with periodic reactant starvation. Ballard Power Systems, McAndrews Held & Malloy, October 29, 2002: US06472090 (28 worldwide citation)

An electrochemical fuel cell is operated with periodic reactant starvation at either or both electrodes. Periodic reactant starvation conditions cause a change in the potential of the starved electrode and may result in the removal of electrocatalyst poisons and in improved fuel cell performance. Th ...


2
Joy Roberts, Marian van der Geest, Jean St Pierre, David P Wilkinson, Alvin Lee, Stephanie Moroz: Method and apparatus for increasing the temperature of a fuel cell. Ballard Power Systems, McAndrews Held & Malloy, December 11, 2001: US06329089 (22 worldwide citation)

A method and apparatus increase the temperature of a fuel cell via reactant starvation at one or both electrodes. Reactant starvation at an electrode results in an increased overvoltage at the electrode and hence increased internal heat generation under load. Starvation conditions can be prolonged o ...


3
Joy Roberts, Marian van der Geest, Jean St Pierre, David P Wilkinson, Alvin Lee, Stephanie Moroz: Method and apparatus for increasing the temperature of a fuel cell. Ballard Power Systems, McAndrews Held & Malloy, July 20, 2004: US06764780 (4 worldwide citation)

A method and apparatus increase the temperature of a fuel cell via reactant starvation at one or both electrodes. Reactant starvation at an electrode results in increased internal heat generation under load. Starvation conditions can be prolonged or intermittent and can be obtained, for example, by ...


4
Joy Roberts, Joerg Zimmermann, Jeremy Schrooten: Method for operating fuel cells with passive reactant supply. Societe BIC, Schwegman Lundberg & Woessner P A, December 3, 2013: US08597806 (1 worldwide citation)

A method for operating a passive, air-breathing fuel cell system is described. In one embodiment, the system comprises one or more fuel cells, and a closed fuel plenum connected to a fuel supply. In some embodiments of the method, the fuel cell cathodes are exposed to ambient air, and the fuel is su ...


5
Joy Roberts, Joerg Zimmermann, Jeremy Schrooten: Method for operating fuel cells with passive reactant supply. Societe BIC, Schwegman Lundberg & Woessner P A, September 16, 2014: US08835024

A method for operating a passive, air-breathing fuel cell system is described. In one embodiment, the system comprises one or more fuel cells, and a closed fuel plenum connected to a fuel supply. In some embodiments of the method, the fuel cell cathodes are exposed to ambient air, and the fuel is su ...


6
Herwig Haas, Francine Berretta, Yvonne Hsieh, Guy Pepin, Joy Roberts, Amy Shun Wen Yang: Fuel cell with selectively conducting anode component. Daimler, Ford Motor Company, Patent Central, Stephan A Pendorf, November 12, 2013: US08580448

By incorporating a selectively conducting component in electrical series with the anode components in a solid polymer fuel cell, degradation during startup and shutdown can be reduced. As a result, the startup and shutdown procedures can be simplified and consequently certain system apparatus may be ...


7
Herwig Haas, Joy Roberts, Francine Berretta, Amy Shun Wen Yang: Durable fuel cell with platinum cobalt alloy cathode catalyst and selectively conducting anode. Daimler, Ford Motor Company, Patent Central, Stephan A Pendorf, February 7, 2017: US09564642

The degradation associated with repeated startup and shutdown of solid polymer electrolyte fuel cells comprising PtCo alloy cathode catalysts can be particularly poor. However, a marked and unexpected improvement in durability is observed as a result of incorporating a selectively conducting compone ...


8
Joy Roberts, Marian Van der Geest, Jean St Pierre, David P Wilkinson, Alvin Lee, Stephanie Moroz: Method and apparatus for increasing the temperature of a fuel cell. Robert W Fieseler, McAndrews Held & Malloy, October 11, 2001: US20010028967-A1

A method and apparatus increase the temperature of a fuel cell via reactant starvation at one or both electrodes. Reactant starvation at an electrode results in an increased overvoltage at the electrode and hence increased internal heat generation under load. Further, starvation techniques may be us ...


9
Joy Roberts, Joerg Zimmermann, Jeremy Schrooten: Method for operating fuel cells with passive reactant supply. Schwegman Lundberg Woessner & Kluth Pa, August 23, 2007: US20070196701-A1

A method for operating a passive, air-breathing fuel cell system is described. In one embodiment, the system comprises one or more fuel cells, and a closed fuel plenum connected to a fuel supply. In some embodiments of the method, the fuel cell cathodes are exposed to ambient air, and the fuel is su ...


10
Joy Roberts, Marian van der Geest, Jean St Pierre, David P Wilkinson, Alvin Lee, Stephanie Moroz: Method and apparatus for increasing the temperature of a fuel cell. Mcandrews Held & Malloy, November 25, 2004: US20040234845-A1

A method and apparatus increase the temperature of a fuel cell via reactant starvation at one or both electrodes. Reactant starvation at an electrode results in an increased overvoltage at the electrode and hence increased internal heat generation under load. Further, starvation techniques may be us ...