一氧化碳
铜
催化作用
电化学
格式化
二氧化碳电化学还原
选择性
法拉第效率
甲烷
无机化学
化学
碳纤维
氧化物
氢
可逆氢电极
合成气
材料科学
电极
工作电极
有机化学
复合数
复合材料
物理化学
作者
Jacob M. Strain,Saumya Gulati,Sahar Pishgar,Joshua M. Spurgeon
出处
期刊:Chemsuschem
[Wiley]
日期:2020-04-08
卷期号:13 (11): 3028-3033
被引量:27
标识
DOI:10.1002/cssc.202000464
摘要
Abstract Efficient electroreduction of carbon dioxide has been a widely pursued goal as a sustainable method to produce value‐added chemicals while mitigating greenhouse gas emissions. Processes have been demonstrated for the electroreduction of CO 2 to CO at nearly 100 % faradaic efficiency, and as a consequence, there has been growing interest in the further electroreduction of carbon monoxide. Oxide‐derived copper catalysts have promising performance for the reduction of CO to hydrocarbons but have still been unable to achieve high selectivity to individual products. A pulsed‐bias technique is one strategy for tuning electrochemical selectivity without changing the catalyst. Herein a pulsed‐bias electroreduction of CO was investigated on oxide‐derived copper catalyst. Increased selectivity for single‐carbon products (i.e., formate and methane) was achieved for higher pulse frequencies (<1 s pulse times), as well as an increase in the fraction of charge directed to CO reduction rather than hydrogen evolution.
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