Pulsed electroreduction of CO{sub 2} on Cu-Ag alloy electrodes
Highly selective reduction of CO{sub 2} to C{sub 2} compounds such as CH{sub 3}CHO, C{sub 2}H{sub 5}OH, and C{sub 2}H{sub 4} has been achieved on CuAg alloy electrodes by pulsed electroreduction. The faradaic efficiencies of C{sub 2} compounds produced on CuAg alloy electrodes were varied with the atomic ratio of Cu to Ag. The total value of faradaic efficiencies for these C{sub 2} compounds was 54.2% for the pulsed electroreduction on a CuAg alloy electrode (Cu/Ag = 28/72) with an anodic bias of V{sub a} = {minus}0.4 V and a cathodic bias of V{sub c} = {minus}2.0 V vs. Ag/AgCl. It was found that the formation of an oxide layer on Cu and the desorption of intermediates on Ag under anodic bias were key factors for the selective reduction of CO{sub 2} to C{sub 2} compounds on CuAg alloy electrodes.
- Research Organization:
- Kyushu Inst. of Tech., Kitakyushu (JP)
- OSTI ID:
- 20080583
- Journal Information:
- Journal of the Electrochemical Society, Vol. 147, Issue 5; Other Information: PBD: May 2000; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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