Carbon monoxide sensor and method of use thereof
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United States of America Patent
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Sep 4, 2007
Grant Date -
Sep 16, 2004
app pub date -
Mar 12, 2003
filing date -
Mar 12, 2003
priority date (Note) -
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Abstract
Carbon monoxide sensors suitable for use in hydrogen feed streams and methods of use thereof are disclosed. The sensors are palladium metal/insulator/semiconductor (Pd-MIS) sensors which may possess a gate metal layer having uniform, Type 1, or non-uniform, Type 2, film morphology. Type 1 sensors display an increased sensor response in the presence of carbon monoxide while Type 2 sensors display a decreased response to carbon monoxide. The methods and sensors disclosed herein are particularly suitable for use in proton exchange membrane fuel cells (PEMFCs).
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