A Fluorohydrogenate Ionic Liquid Fuel Cell Operating Without Humidification

Abstract
A fuel cell operating without humidification and driven by hydrogen transfer via fluorohydrogenate anions, , has been constructed using a room-temperature ionic liquid (molten salt), 1-ethyl-3-methylimidazolium fluorohydrogenates, . The open-circuit voltage was under the flow of hydrogen and oxygen gas at . Polarization behaviors of the anode and cathode in revealed satisfactory performance as a fuel cell electrolyte. , which is thermally more stable than and does not liberate HF even at , exhibits significantly improved polarization behavior by the elevation of the operation temperature.