Fuel cell CO sensor

Title: Fuel cell CO sensor

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Abstract

The CO concentration in the H.sub.2 feed stream to a PEM fuel cell stack is monitored by measuring current and/or voltage behavior patterns from a PEM-probe communicating with the reformate feed stream. Pattern recognition software may be used to compare the current and voltage patterns from the PEM-probe to current and voltage telltale outputs determined from a reference cell similar to the PEM-probe and operated under controlled conditions over a wide range of CO concentrations in the H.sub.2 fuel stream. A CO sensor includes the PEM-probe, an electrical discharge circuit for discharging the PEM-probe to monitor the CO concentration, and an electrical purging circuit to intermittently raise the anode potential of the PEM-probe's anode to at least about 0.8 V (RHE) to electrochemically oxidize any CO adsorbed on the probe's anode catalyst.

Inventors:

Grot, Stephen Andreas ^[1]; Meltser, Mark Alexander ^[2]; Gutowski, Stanley ^[2]; Neutzler, Jay Kevin ^[1]; Borup, Rodney Lynn ^[3]; Weisbrod, Kirk ^[4]

Rochester, NY
Pittsford, NY
East Rochester, NY
Los Alamos, NM

Issue Date:: 1999-12-14

Research Org.:: GENERAL MOTORS CORP

OSTI Identifier:: 872749

Patent Number(s):: 6001499

Application Number:: 08/957563

Assignee:: General Motors Corporation (Detroit, MI)

DOE Contract Number:: AC02-90CH10435

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: fuel; cell; sensor; concentration; feed; stream; pem; stack; monitored; measuring; current; voltage; behavior; patterns; pem-probe; communicating; reformate; pattern; recognition; software; compare; telltale; outputs; determined; reference; similar; operated; controlled; conditions; wide; range; concentrations; electrical; discharge; circuit; discharging; monitor; purging; intermittently; raise; anode; potential; rhe; electrochemically; oxidize; adsorbed; probe; catalyst; reference cell; fuel cell; electrical discharge; pattern recognition; fuel stream; cell stack; feed stream; wide range; pem fuel; controlled conditions; recognition software; measuring current; voltage patterns; voltage behavior; behavior patterns; cell similar; anode catalyst; reformate feed; pem-probe communicating; charge circuit; /429/48/

Citation Formats


                    Grot, Stephen Andreas, Meltser, Mark Alexander, Gutowski, Stanley, Neutzler, Jay Kevin, Borup, Rodney Lynn, and Weisbrod, Kirk. Fuel cell CO sensor.  United States: N. p., 1999. 
        Web.

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                    Grot, Stephen Andreas, Meltser, Mark Alexander, Gutowski, Stanley, Neutzler, Jay Kevin, Borup, Rodney Lynn, & Weisbrod, Kirk. Fuel cell CO sensor.  United States.

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                    Grot, Stephen Andreas, Meltser, Mark Alexander, Gutowski, Stanley, Neutzler, Jay Kevin, Borup, Rodney Lynn, and Weisbrod, Kirk. Tue .  
        "Fuel cell CO sensor".  United States.  https://www.osti.gov/servlets/purl/872749.

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@article{osti_872749,

  title        = {Fuel cell CO sensor},

  author       = {Grot, Stephen Andreas and Meltser, Mark Alexander and Gutowski, Stanley and Neutzler, Jay Kevin and Borup, Rodney Lynn and Weisbrod, Kirk},

  abstractNote = {The CO concentration in the H.sub.2 feed stream to a PEM fuel cell stack is monitored by measuring current and/or voltage behavior patterns from a PEM-probe communicating with the reformate feed stream. Pattern recognition software may be used to compare the current and voltage patterns from the PEM-probe to current and voltage telltale outputs determined from a reference cell similar to the PEM-probe and operated under controlled conditions over a wide range of CO concentrations in the H.sub.2 fuel stream. A CO sensor includes the PEM-probe, an electrical discharge circuit for discharging the PEM-probe to monitor the CO concentration, and an electrical purging circuit to intermittently raise the anode potential of the PEM-probe's anode to at least about 0.8 V (RHE) to electrochemically oxidize any CO adsorbed on the probe's anode catalyst.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1999},

  month        = {12}

}

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