Methods of removing contaminants from a fuel cell electrode

Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature

Reexamination Certificate

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C700S291000

Reexamination Certificate

active

07615294

ABSTRACT:
A method of optimizing a waveform of an electrical current applied to an electrode of an elecetrochemical device that includes at least two electrodes separated by an electrolyte, includes the steps of: applying an electrical current to an electrode of a device; determining a waveform of the voltage or the current of the electrical current; representing the waveform by a mathematical expressions or numbers; taking measurements of output voltage, current or power of the device associated with the application of the electrical current; and varying the shape and frequency of the wave form to optimize the output voltage, current or power of the device and thereby determine an optimized waveform of the electrical current to be applied to the electrode of the device.

REFERENCES:
patent: 3207682 (1965-09-01), Oswin et al.
patent: 3436271 (1969-04-01), Cole et al.
patent: 3544380 (1970-12-01), Dey
patent: 3607417 (1971-09-01), McRae et al.
patent: 3753780 (1973-08-01), Fetterman
patent: 4053684 (1977-10-01), Zito, Jr. et al.
patent: 4420544 (1983-12-01), Lawson et al.
patent: 4440611 (1984-04-01), Dhar et al.
patent: 4497698 (1985-02-01), Bockris et al.
patent: 4501804 (1985-02-01), Bockris et al.
patent: 4722776 (1988-02-01), Murphy et al.
patent: 4734168 (1988-03-01), Bockris et al.
patent: 4741978 (1988-05-01), Takabayashi
patent: 4790916 (1988-12-01), Murphy et al.
patent: 4904548 (1990-02-01), Tajima
patent: 4910099 (1990-03-01), Gottesfeld
patent: 4959132 (1990-09-01), Fedkiw, Jr.
patent: 4995952 (1991-02-01), Dandapani et al.
patent: 5023150 (1991-06-01), Takabayashi
patent: 5223102 (1993-06-01), Fedkiw, Jr. et al.
patent: 5242505 (1993-09-01), Lin et al.
patent: 5399245 (1995-03-01), Fedkiw, Jr.
patent: 5468574 (1995-11-01), Ehrenberg et al.
patent: 5525436 (1996-06-01), Savinell et al.
patent: 5561202 (1996-10-01), Helmer-Metzmann et al.
patent: 5601936 (1997-02-01), Dudfield et al.
patent: 5677073 (1997-10-01), Kawatsu
patent: 5679482 (1997-10-01), Ehrenberg et al.
patent: 5712052 (1998-01-01), Kawatsu
patent: 5795496 (1998-08-01), Yen et al.
patent: 5800798 (1998-09-01), Ino et al.
patent: 5925476 (1999-07-01), Kawatsu
patent: 5945229 (1999-08-01), Meltser
patent: 5965299 (1999-10-01), Khan et al.
patent: 5976724 (1999-11-01), Bloomfield
patent: 5985477 (1999-11-01), Iwasaki et al.
patent: 6001499 (1999-12-01), Grot et al.
patent: 6063516 (2000-05-01), Grot et al.
patent: 6068942 (2000-05-01), Strasser et al.
patent: 6094033 (2000-07-01), Ding et al.
patent: 6096448 (2000-08-01), Wilkinson et al.
patent: 6096449 (2000-08-01), Fuglevand et al.
patent: 6124060 (2000-09-01), Akita et al.
patent: 6183914 (2001-02-01), Yao et al.
patent: 6210820 (2001-04-01), Knights et al.
patent: 6232750 (2001-05-01), Podrazhansky et al.
patent: 6238543 (2001-05-01), Law, Jr. et al.
patent: 6245214 (2001-06-01), Rehg et al.
patent: 6255008 (2001-07-01), Iwase
patent: 6265092 (2001-07-01), Meltser et al.
patent: 6635369 (2003-10-01), Uribe et al.
patent: 2001/0028967 (2001-10-01), Roberts et al.
patent: 2001/0037948 (2001-11-01), Liu et al.
patent: 2001/0038937 (2001-11-01), Suzuki et al.
patent: 2002/0075003 (2002-06-01), Fridman et al.
patent: 2006/0070886 (2006-04-01), Saunders et al.
patent: 19710819 (1997-03-01), None
patent: 10053851 (2002-05-01), None
patent: 0701294 (1996-08-01), None
patent: 1017121 (2000-07-01), None
patent: 0692835 (2001-02-01), None
patent: 402311302 (1990-12-01), None
patent: 8007905 (1996-01-01), None
patent: 410216461 (1998-08-01), None
patent: 11345624 (1999-12-01), None
patent: WO 98/42038 (1998-03-01), None
patent: WO 98/52243 (1998-11-01), None
patent: WO 99/67846 (1999-12-01), None
patent: WO 01/80340 (2001-04-01), None
Model for Polymer Electrolyte Fuel Cell Operation on Reformate Feed: Effects of CO, H2 Dilution, and High Fuel Utilization J. Electrochem. Soc., vol. 148, Issue 1, pp. A11-A23 (Jan. 2001).
International Search Report citing WO 01/80340 and DE 10053851, date unknown.
International Search Report citing DE 19710819, date unknown.
Park, “Direct oxidation of hydrocarbons in a solid-oxide fuel cell”, Nature, vol. 404, pp. 265-267 (2000).
Wang et al., “Pulsed-Potential Oxidation of Methanol; I. Smooth Platinum Electrode With and Without Tin Surface Modification”, J. Electrochem. Soc., vol. 139, No. 9, pp. 2519-2525 (1992).
Wang et al., “Pulsed-Potential Oxidation of Methanol; II. Graphite-Supported Platinum Electrode With and Without Tin Surface Modification”, J. Electrochem. Soc., vol. 139, No. 11, pp. 3151-3158 (1992).
Dzwinel et al., “A Computational Model of Fuel Cell Short-Time Dynamics”, Transactions, vol. 4, No. 4, pp. 299-310 (1987).
Argyropoulos et al., “Dynamic response of the direct methanol fuel cell under variable load conditions”, Journal of Power Sources, vol. 87, pp. 153-161 (2000).
Koper, “The Theory of Electrochemical Instabilities”, Electrochimica Acta, vol. 37, No. 10, pp. 1771-1778 (1992).
Parmananda et al., “Stabilization of unstable steady states in an electrochemical system using derivative control”, Physical Review E, vol. 49, No. 6, pp. 5007-5011(1994).
Bockris, “Basis of Possible Continuous Self Activation in an Electrochemical Energy Converter”, J. Electroanal. Chem., vol. 7, pp. 487-490 (1964).
Deibert et al., “Voltage Oscillations of the H2-CO System”, J. Electrochem. Soc.. vol. 116, No. 9, pp. 1290-1292 (1969).
Farooque et al., “The Anodic Oxidation of Methanol via Continuous Electrode Reactivation”, Electrochimica Acta, vol. 24, pp. 547-553 (1979).
Fedkiw et al., “Pulsed-Potential Oxidation of Methanol”, J. Electrochem. Soc., vol. 135, No. 10, pp. 2459-2465 (1988).
Carrette et al., “Improvement of CO Tolerance of Proton Exchange Membrane (PEM) Fuel Cells by a Pulsing Technique”, PCCP, vol. 3, No. 3, pp. 320-324 (2001).
Utkin, Sliding Modes in Control and Optimization, pp. 198-205, Springer-Verlag, Berlin (1992).
Fukumoto, “Oscillation Phenomena on the Cell Voltage of PEFCs During CO Poisoning”, Electrochemistry, vol. 68, No. 10, pp. 794, 796, 798, 800 (2000).

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