Electrochemical Behavior of Silver in 1-Ethyl-3-methylimidazolium Tetrafluoroborate Molten Salt

A room-temperature molten salt, 1-ethyl-3-methylimidazolium tetrafluoroborate with adequate purity was obtained simply by the reaction of 1-ethyl-3-methylimidazolium chloride and tetrafluoroboric acid. Silver tetrafluoroborate dissolves up to ∼0.2 mol dm −3 in at room temperature. Electrochemical deposition and dissolution of silver on a platinum electrode were found possible in containing The reduction of monovalent silver species is electrochemically irreversible, the rate constant being estimated to be cm s −1 . The diffusion coefficient of Ag(I) is calculated to be cm 2 s −1 , suggesting that Ag(I) exists as a substantially bare cation in © 2001 The Electrochemical Society. All rights reserved.