Electrochemical cells, and gas sensor and fuel cell devices comprising same

摘要

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.

主权项

1. 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 comprises methyl-octyl-imidazolium-chloride, or butyl-methyl-imidazolium-bis-trifluoromethane-sulfonimide, or mixtures thereof, wherein the substantially solvent-free, ionic liquid electrolyte is substantially free of additives wherein the substantially solvent-free, ionic liquid electrolyte is weight-stable after remaining 5 days at a temperature of 80° C.