Electrochemical gas sensor with an ionic liquid electrolyte system including at least one monoalkylammonium, dialkylammonium, or trialkylammonium cation

US8623189B2 · kind B2 · utility

Assignee

• MSA Auer GmbH · DE

Inventors

• Rolf Eckhardt · Alzenau, DE
• Ralf Warratz · Bonn, DE

Key dates

• Filing date: Nov 25, 2009
• Grant date: Jan 7, 2014
• Expiry date: Jun 18, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/4045
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An electrochemical gas sensor includes an ionic liquid as electrolyte. The ionic liquid includes at least one cation selected from the group of a monoalkylammonium cation, a dialkylammonium cation, and a trialkylammonium cation. The individual alkyl groups of the cation can be branched or unbranched and have 1 to 4 carbon atoms. The individual alkyl groups of the cation can be the same or different in case of the dialkylammonium cation and the trialkylammonium cation. In a number of embodiments, the individual alkyl groups have 2 to 4 carbon atoms.