Electrochemical cells, and gas sensor and fuel cell devices comprising same
AssigneeHoneywell International Inc.
InventorAndreas Rohrl
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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.
Claims22
An electrochemical fuel cell including an electrolyte compartment, cathode and anode electrode elements, and fuel and oxidant passages, said electrolyte compartment containing an ionic liquid electrolyte.
An electrochemical fuel cell assembly, comprising an ionic liquid electrolyte compartment containing ionic liquid electrolyte, and an anode and cathode in contact with the ionic liquid electrolyte in the compartment, wherein the anode has an anode backing layer thereon providing passageways therein for gas access to the anode, wherein the cathode has a cathode backing layer thereon providing passageways therein for gas access to the cathode, an anode current collector in contact with the anode backing layer, a cathode current collector in contact with the cathode backing layer, and an electrical circuit-forming means coupled with the anode current collector and the anode current collector, to form therewith an electrical circuit enabling output of electrical energy from the electrochemical fuel cell.
Dependencies are inferred from the claim text.