Comparison of Au, Ag Electrode in Carbon Dioxide Electrochemical Reduction under the same Condition

Abstract:

The electrochemical reduction of carbon dioxide (CO₂) has been studied on various metal electrodes including main group and transition elements in aqueous solution. Of these electrodes, silver and gold are found to have catalytic activity for the conversion of CO₂ to CO with considerably high Faradaic efficiencies. However, no work has been done to evaluate the electrocatalytical property of these two electrodes in the same electrochemical system under the same condition. In present work, we investicate the electrocatalytical property of Ag and Au electrodes in the same electrolysis cell and under the same condition. We found Au electrode exhibits higher current density and higher faradaic efficiency for CO formation than Ag electrode.

• Periodical: Advanced Materials Research (Volumes 781-784)
• Pages: 362-366
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.781-784.362
• Online since: September 2013
• Authors: Xiao Chun Wang, You Jian Jia, Feng Shi, Jin Shi
• Keywords: Carbon Dioxide, Electrocatalytical Reduction, Energy Storage

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