Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Process or means for control of operation
Reexamination Certificate
2005-12-03
2011-10-25
Crepeau, Jonathan (Department: 1725)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for control of operation
C429S483000, C429S522000
Reexamination Certificate
active
08043754
ABSTRACT:
A fuel cell, such as a polymer electrolyte fuel cell, includes an anode reactant supply plate, an anode current collector, a cathode reactant supply plate, and a cathode current collector. At least one of the anode reactant supply plate, the cathode reactant supply plate, the anode current collector and the cathode current collector is electrically separated into a number of segments, wherein each segment of at least a subgroup of segments is separately connected to an electronic drive and analysis circuitry which performs in parallel impedance measurement in a frequency range of 0.1 mHz to 50 kHz of the respective segments.
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patent: 102 13 478 (2003-12-01), None
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European Office Action dated Feb. 4, 2011.
Bender et al.; “Further Refinements in the Segmented Cell Approach to Diagnosing Performance in Polymer Electrolyte Fuel Cells”; Journal of Power Sources, Elsevier Sequoia S.A. Lausanne, Switzerland vol. 123, No. 2; Sep. 20, 2003; pp. 163-171; XP004443559; ISSN: 0379-7753.
Wieser et al.; “A New Technique for Two-Dimensional Current Distribution Measurements in Electrochemical Cells”; Journal of Applied Electrochemistry, Chapman and Hall, London, GB vol. 30, No. 7; Jul. 2000; pp. 803-807; XP002170127; ISSN: 0021-891X.
Derwent Abstract—DE-102 13 478 A1; Dec. 24, 2003; Ralf Kraume, D-19061 Schwerin, Germany.
Scherer Guenther G.
Schneider Ingo
Crepeau Jonathan
Douyette Kenneth
Greenberg Laurence A.
Locher Ralph E.
Paul Scherrer Institut
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