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US 2011/0209997 A1Published application
Electrochemical Cells, and Gas Sensor and Fuel Cell Devices Comprising Same
AssigneeHoneywell International Inc.
InventorAndreas Röhrl
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Abstract
An electrochemical cell for applications such as electrochemical fuel cells, or electrochemical cell gas sensors used for detection of target gas species in environments containing or susceptible to presence of same. The electrochemical cell utilizes an ionic liquid as an electrolyte medium, thereby achieving a broader range of operational temperatures and conditions, relative to electrochemical cells utilizing propylene carbonate or other conventional electrolytic media.
Claims20
An electrochemical gas sensor assembly comprising:
- a housing;
- a first and a second electrode positioned within the housing;
- a substantially solvent-free, ionic liquid electrolyte contained within the housing in electrical contact with the electrodes;
- and
- a gas access port, wherein the substantially solvent-free, ionic liquid electrolyte is weight-stable after remaining 5 days at a temperature of 80° C.
2 more elements
An electrochemical gas sensor assembly having a housing comprising:
- a substantially solvent-free, ionic liquid electrolyte, and
- at least a first and a second electrode in contact with the ionic liquid electrolyte,
- wherein the first electrode has a backing layer thereon providing passageways therein for gas access there,
- wherein the second electrode has a backing layer thereon providing passageways therein for gas access thereto,
- wherein the ionic liquid electrolyte is weight-stable after 5 days at a temperature of 80° C.
2 more elements
Dependencies are inferred from the claim text.