Carbon monoxide sensor and method of use

Details Carbon monoxide sensor and method of use Carbon monoxide sensor and method of use

2006-01-10

2006-01-10

Trieu, Van T. (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S633000

Reexamination Certificate

active

06985082

ABSTRACT:
A sensor and method of use for detection of low levels of carbon monoxide in gas mixtures. The approach is based on the change in an electrical property (for example: resistance) that occurs when carbon monoxide is selectively absorbed by a film of copper chloride (or other metal halides). The electrical property change occurs rapidly with both increasing and decreasing CO contents, varies with the amount of CO from the gas stream, and is insensitive to the presence of hydrogen. To make a sensor using this approach, the metal halide film will deposited onto an alumina substrate with electrodes. The sensor may be maintained at the optimum temperature with a thick film platinum heater deposited onto the opposite face of the substrate. When the sensor is operating at an appropriate (and constant) temperature, the magnitude of the electrical property measured between the interdigital electrodes will provide a measure of the carbon monoxide content of the gas.

REFERENCES:
patent: 4470829 (1984-09-01), Hirai et al.
patent: 4783433 (1988-11-01), Tajima et al.
patent: 4917711 (1990-04-01), Xie et al.
patent: 5147827 (1992-09-01), Chino et al.
patent: 5300271 (1994-04-01), Golden et al.
patent: 5529763 (1996-06-01), Peng et al.
patent: 5656827 (1997-08-01), Kang et al.
patent: 5841021 (1998-11-01), De Castro et al.
patent: 6202471 (2001-03-01), Yadav et al.
patent: 6311545 (2001-11-01), Tamaki et al.
patent: 6429019 (2002-08-01), Goldstein et al.
patent: 6474138 (2002-11-01), Change et al.
patent: 6531704 (2003-03-01), Yadav et al.
US Fuel Cell Council, “Fuel Cell Power for Vehicles”, www.usfcc.com, Spring 2001, 28 pp.
Rao, Report: “CO Sensors for Fuel Cell Applications”, Mar. 2, 2000, 1-11.
Lee et al., “Removal of CO From Reformate for PEFC Application”, Proceedings of the 1998 Fuel Cell Seminar, 1998, 578-581.
Peng et al., “CO Adsorbents Based on the Formation of a Supported Cu ( CO )C1 Complex”, Langmuir 1995, 11 534-537.
Nogami et al., “Preparation and Nonlinear Optical Properties of Quantum-Sized CuC1-Doped Silica Glass by the Sol-Gel Process”, J. Am. Ceram. Soc. 74, 1991, 238-240.
Oetjen et al., “Performance Data of a Proton Exchange Membrane Fuel Cell Using H2/CO as Fuel Gas”, J. Electrochem. Soc., vol. 143, No. 12, Dec. 1996, 3838-3842.
Igarashi et al., “Hydrogen Electro-Oxidation on Platinum Catalysts in the Presence of Trace Carbon Monoxide”, Journal of Electroanalytical Chemistry 391 (1995) 119-123.
Scarano et al., “Morphology and CO Adsorptive Properties of CuC1 Polycrystalline Films: a SEM and FTIR Study”, Surface Science 387 (1997) 236-242.
Matsui et al., “Ionic Conductivity of Cuprous Chloride Containing Cuprous Sulfide”, J. Electrochem. Soc.: Solid-State Science and Technology, Apr. 1977, 610-614.
Joshi et al., “Electrochemical Studies on Single Crystalline CuC1 Solid Electrolyte” J. Electrochem. Soc.: Electrochemical Science and Technology, vol. 122, No. 8, Aug. 1975, 1071-1080.
Jow et al., “The Effect of Dispersed Alumina Particles on the Electrical Conductivity of Cuprous Chloride”, J. Electrochem. Soc.: Solid-State Science and Technology, vol. 126, No. 11, Nov. 1979, 1963-1972.
Hakansson et al., “Preparation and Structural Characterization of Cu (CO ) C1” Inorg. Chem. 1990, 29, 5241-5244.
Ida et al., “The Preparation and Properties of Polycrystals of Solid Electrolyte Ultrafine Particles”, Surface Review and Letters, vol. 3, No. 1 (1996) 41-44.
Seguin et al., “Preparation of Thin Films of Copper (I) Bromide by R.F. Sputtering: Morphology and Electrical Properties”, Thin Solid Films 323 (1998) 31-36.
Villain et al., “Study of Polycrystalline CuBr and the Interface Cu/CuBr by Impedance Spectroscopy”, Solid State Ionics 83 (1996) 191-198.
Sequin et al., “Mixed Ionic-Electronic Conducting Thin-Films of CuBr: A New Active Component for Gas Sensors?”, Sensors and Actuators 74 (1999) 237-241.
Lauque et al., “Electrical Properties and Sensor Characteristics for NH3 Gas of Sputtered CuBr Films”, Sensors and Actuators B 59 (1999) 216-219.
Lauque et al., “Electrical Properties of Thin-Films of the Mixed Ionic-Electronic Conductor CuBr: Influence of Electrode Metals and Gaseous Ammonia” Journal of European Ceramic Society 19 (1999) 823-826.
Dudfield et al., “Evaluation and Modelling of a CO Selective Oxidation Reactor for Solid Polymer Fuel Cell Automotive Applications”, Journal of Power Sources 85 (2000) 237-244.
Rohland et al., “The PEMFC-Integrated CO Oxidation—A Novel Method of Simplifying the Fuel Cell Plant”, Journal of Power Sources 84 (1999) 183-186.
Schmidt et al., “Influence of CsCu2C13 on the Electrical Conductivity of CuC1”, Solid State Ionics 112 (1998) 63-67.
Ida et al., “The Preparation and Properties of Polycrystals of Solid Electrolyte Ultrafine Particles”, Surface Review and Letters, vol. 3, No. 1 (1996), 41-44.
Matsui et al., “Ionic Conductivity in Pure and Cadmium-Doped Cuprous Iodide”, J. Electrochem. Soc.: Solid-State Science and Technology, Feb. 1977, 300-305.
Chang et al., “The Effect of Particle Size on the Electrical Conductivity of CuC1 (A1203) Composites” Plasma-Deposited Si3N4, vol. 131, No. 5, May 1984, 1213-1214.
Hsueh et al., “Thermoelectric Power of CuC1 Containing CdC12” The Journal of Chemical Physics, vol. 39, No. 12, Dec. 1963, 3519-3522.
Gurbuz et al., “High-Temperature Tolerant Diamond Diode for Carbon Monoxide Gas Detection”, Journal of Applied Physics, vol. 84, No. 12, Dec. 1998, 6935-6936.
Riess et al., “Electrical Conductivity Measurements on Cuprous Bromide, CuBr, in the Presence of Oxygen”, Solid State Ionics 59 (1993) 279-286.
Li et al., “High-Temperature Carbon Monoxide Potentiometric Sensor”, J. Electrochem. Soc., vol. 140, No. 4, Apr. 1993, 1068-1073.
Brune et al., “The Electrical Conductivity of Single and Polycrystalline Copper (I) Chloride”, Materials Research Bulletin, vol. 30, No. 5, 573-579 (1995).
Riess, “Four Point Hebb-Wagner Polarization Method for Determining the Electronic Conductivity in Mixed Ionic-Electronic Conductors”, Solid State Ionics 51 (1992) 219-229.
Riess et al., “Failure of Hebb-Wagner Polarization Measurements Due to Decomposition of the Sample”, Solid State Ionics 59 (1993) 99-108.
Jiang et al., “A Theoretical Model for Composite Electrolytes-II. Percolation Model for Ionic Conductivity Enhancement”, J. Phys. Chem. Solids vol. 56, No. 8, 1113-1124 (1995).
Nakamura et al., Size-Dependent Radiative Decay of Excitons in CuC1 Semiconducting Quantum Spheres Embedded in Glasses, The American Physical Society, Physical Review B, vol. 40, No. 12, 8585-8588.
Soga et al., “A Method of Growing CuCl Single Crystals with Flux”, J. Electrochem. Soc.: Solid State Science, Apr. 1967, 388-390.
Ekimov et al., “Quantum Size Effect in Semiconductor Microcrystals”, Solid State Communications, vol. 56, No. 11, 921-924 (1985).
Maier, “Electrical Sensing of Complex Gaseous Species by Making Use of Acid-Base Properties”, Solid State Ionics 62 (1993) 105-111.
Maier, “Defect Chemistry and Conductivity Effects in Heterogeneous Solid Electrolytes”, J. Electrochem. Soc.: Solid-State Science and Technology, Jun. 1987, 1524-1535.
Matsui et al., “Inorganic Copper Ion Conductors”, Solid Electrlytes 1978, 237-252.
Bhattacharyya et al., “Effective Medium Theory for Ionic Conductivity in Polycrystalline Solid Electrolytes”, Solid State Ionics 95 (1997) 283-288.
Maier, “Ionic Conduction in Space Charge Regions”, Prog. Solid St. Chem., vol. 23, (1995), 171-263.
Lauer et al., “Conductance Effects of Ammonia on Silver Chloride Boundary Layers”, Sensors and Actuators B, 2 (1990) 125-131.

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