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Carbon dioxide sensor

United States Patent

8,057,653
November 15, 2011
View the Complete Patent at the US Patent & Trademark Office
The present invention generally relates to carbon dioxide (CO.sub.2) sensors. In one embodiment, the present invention relates to a carbon dioxide (CO.sub.2) sensor that incorporates lithium phosphate (Li.sub.3PO.sub.4) as an electrolyte and sensing electrode comprising a combination of lithium carbonate (Li.sub.2CO.sub.3) and barium carbonate (BaCO.sub.3). In another embodiment, the present invention relates to a carbon dioxide (CO.sub.2) sensor has a reduced sensitivity to humidity due to a sensing electrode with a layered structure of lithium carbonate and barium carbonate. In still another embodiment, the present invention relates to a method of producing carbon dioxide (CO.sub.2) sensors having lithium phosphate (Li.sub.3PO.sub.4) as an electrolyte and sensing electrode comprising a combination of lithium carbonate (Li.sub.2CO.sub.3) and barium carbonate (BaCO.sub.3).
Dutta; Prabir K. (Worthington, OH), Lee; Inhee (Columbus, OH), Akbar; Sheikh A. (Hilliard, OH)
Ohio State Research Foundation (Columbus, OH)
11/ 974,580
20090095626
October 15, 2007
This work was supported by CISM through the Department of Energy Contract No. DE-FC26-03NT41615 and, as such, the United States government may have certain rights thereto.