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US 9,518,952 B2Granted
Gas sensor
AssigneeUTC Fire & Security Corporation
InventorsLei Chen, Zhiwei Yang, Jean Yamanis, Georgios S. Zafiris, Joseph J. Sangiovanni
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Abstract
A membrane electrode assembly for a gas sensor is described that includes a membrane disposed between a sensing electrode and a counter electrode. The membrane is a polymer membrane, such as an ionomer, having an ionic liquid retained therein.
Claims20
A membrane electrode assembly for a gas sensor, comprising:
- a sensing electrode;
- a counter electrode;
- and
- a polymer membrane comprising an ionomer, disposed between the sensing electrode and the counter electrode, the polymer membrane comprising an ionic liquid retained therein.
1 more element
A membrane electrode assembly for a gas sensor, comprising
- a sensing electrode;
- a counter electrode;
- and
- a polymer membrane disposed between the sensing electrode and the counter electrode, the polymer membrane comprising an ionic liquid retained therein,
- wherein either or both of the sensing electrode and the reference electrode comprises carbon particles, an ionomer, an ionic liquid retained within the electrode, and optionally a catalyst.
2 more elements
A gas sensor comprising a housing having disposed therein a membrane electrode assembly comprising:
- a sensing electrode;
- a counter electrode;
- and
- a polymer membrane comprising an ionomer, disposed between the sensing electrode and the counter electrode, the polymer membrane comprising an ionic liquid retained therein;
- said housing containing a reference gas chamber to which the counter electrode is exposed, and a test gas chamber to which the sensing electrode is disposed;
- a pathway for test gas to enter the test gas chamber;
- and
- an electrical circuit connecting the sensing electrode and the counter electrode.
5 more elements
Dependencies are inferred from the claim text.