Catalytic electrochemical reduction of CO2 in ionic liquid EMIMBF3Cl

Laura L. Snuffin, Louis W. Whaley, Lei Yu

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


A novel ionic liquid EMIMBF3Cl that contains a BF 3Cl- anion has been synthesized. This is the first report of an ionic liquid with a BF3Cl- anion. It was found that CO2 gas can be dissolved and electrochemically reduced at ambient pressure, and room temperature in the ionic liquid EMIMBF3Cl. The reduction of CO2 occurred at a relatively less negative electrode potential of -1.8 V vs. silver wire, compared to previous reported values that are between -2.4 and -2.0 V. The reduction current density can be as high as ∼5.7 mA/cm2. The BF3Cl- anion may catalyze the CO2 reduction by forming a Lewis acid-base adduct BF 3-CO2.

Original languageEnglish (US)
Pages (from-to)F155-F158
JournalJournal of the Electrochemical Society
Issue number9
StatePublished - 2011

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry


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