PTFE Bound Activated Carbon - A Quasi Reference Electrode for Ionic Liquids and its Application

摘要

The search for widely applicable and stable reference electrodes innon-aqueous electrochemistry, especially in Ionic Liquids (IL), isone of the important topics in basic electrochemical research.PTFE bound activated carbon (AC) quasi-reference electrode forapplication with IL will be presented. The AC quasi-referenceelectrode shows long term stability in various IL and is unaffectedby small impurities or charging currents. The quasi referenceelectrode (QRE) is used to study the anodic potential limits ofthree different Imidazolium based IL having cyano groups in theanion. The anodic electrochemical stability follows a clear trend inthe order: [C(CN)_3] < [N(CN)_2] < [B(CN)_4] which appears to be inagreement with valence band measurements performed using Xrayphotoelectron spectroscopy.