Non‐Haloaluminate Room‐Temperature Ionic Liquids in Electrochemistry—A Review

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Abstract
Some twenty‐five years after they first came to prominence as alternative electrochemical solvents, room temperature ionic liquids (RTILs) are currently being employed across an increasingly wide range of chemical fields. This review examines the current state of ionic liquid‐based electrochemistry, with particular focus on the work of the last decade. Being composed entirely of ions and possessing wide electrochemical windows (often in excess of 5 volts), it is not difficult to see why these compounds are seen by electrochemists as attractive potential solvents. Accordingly, an examination of the pertinent properties of ionic liquids is presented, followed by an assessment of their application to date across the various electrochemical disciplines, concluding with an outlook viewing current problems and directions.