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Title: Method of monitoring CO concentrations in hydrogen feed to a PEM fuel cell

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. The PEM-probe is intermittently purged of any CO build-up on the anode catalyst (e.g., by (1) flushing the anode with air, (2) short circuiting the PEM-probe, or (3) reverse biasing the PEM-probe) to keep the PEM-probe at peak performance levels.

Inventors:
 [1];  [2];  [2];  [1];  [3];  [4]
  1. (Rochester, NY)
  2. (Pittsford, NY)
  3. (East Rochester, NY)
  4. (Los Alamos, NM)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
872997
Patent Number(s):
US 6063516
Assignee:
General Motors Corporation (Detroit, MI) LANL
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; monitoring; concentrations; hydrogen; feed; pem; fuel; cell; concentration; stream; 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; intermittently; purged; build-up; anode; catalyst; flushing; air; circuiting; reverse; biasing; peak; performance; levels; reference cell; fuel cell; pattern recognition; fuel stream; cell stack; feed stream; wide range; pem fuel; controlled conditions; recognition software; measuring current; voltage patterns; voltage behavior; behavior patterns; peak performance; cell similar; anode catalyst; reverse bias; reformate feed; pem-probe communicating; hydrogen feed; /429/

Citation Formats

Grot, Stephen Andreas, Meltser, Mark Alexander, Gutowski, Stanley, Neutzler, Jay Kevin, Borup, Rodney Lynn, and Weisbrod, Kirk. Method of monitoring CO concentrations in hydrogen feed to a PEM fuel cell. United States: N. p., 2000. Web.
Grot, Stephen Andreas, Meltser, Mark Alexander, Gutowski, Stanley, Neutzler, Jay Kevin, Borup, Rodney Lynn, & Weisbrod, Kirk. Method of monitoring CO concentrations in hydrogen feed to a PEM fuel cell. United States.
Grot, Stephen Andreas, Meltser, Mark Alexander, Gutowski, Stanley, Neutzler, Jay Kevin, Borup, Rodney Lynn, and Weisbrod, Kirk. Sat . "Method of monitoring CO concentrations in hydrogen feed to a PEM fuel cell". United States. https://www.osti.gov/servlets/purl/872997.
@article{osti_872997,
title = {Method of monitoring CO concentrations in hydrogen feed to a PEM fuel cell},
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. The PEM-probe is intermittently purged of any CO build-up on the anode catalyst (e.g., by (1) flushing the anode with air, (2) short circuiting the PEM-probe, or (3) reverse biasing the PEM-probe) to keep the PEM-probe at peak performance levels.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

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