Influence of transition metal modification of oxide-derived Cu electrodes in electroreduction of CO₂

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• 作者：Li Liu ; Na Tian ; ^{tnsd@xmu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Long Huang ; Yu-Hao Hong ; Ai-Yun Xie ; Feng-Yang Zhang ; Chi Xiao ; Zhi-You Zhou ; Shi-Gang Sun ; ^{sgsun@xmu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Carbon dioxide reduction ; Oxide-derived Copper ; Potentiostatic deposition ; Faraday efficiency ; Modified by transition metal
• 刊名：Chinese Journal of Catalysis
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：37
• 期：7
• 页码：1070-1075
• 全文大小：2031 K

文摘

The modification of oxide-derived Cu electrode with Ni, Zn, and Au was examined to improve the catalytic activity of CO₂ electroreduction. The experimental results showed that Ni modification increased the Faraday efficiency of the formation of formic acid and n-propanol. The Faraday efficiency relating to the formation of the liquid products was as high as 34.3% at −1.5 V versus the saturated calomel electrode reference potential. In contrast, modification with Zn reduced the formic acid formation efficiency but enhanced the alcohol formation efficiency. Finally, modification with Au suppressed the selectivity toward the formation of both formic acid and alcohols.