Electrochemical Reduction of CO2 to HCOOH over Copper Catalysts
Source abstract
Abstract
Although great progress has been made in the field of electrochemical CO2 reduction reaction (eCO2RR), inducing product selectivity is still difficult. We herein report that a thiocyanate ion (SCN–) switched the product selectivity of copper catalysts for eCO2RR in an H-cell. A cuprous thiocyanate-derived Cu catalyst was found to exhibit excellent HCOOH selectivity (faradaic efficiency = 70–88%) over a wide potential range (−0.66 to −0.95 V vs RHE). Furthermore, it was revealed that the formation of CO and C2H4 over commercial copper electrodes could be dramatically suppressed with the presence of SCN–, switching to HCOOH. Density functional theory calculations disclosed that SCN– made the formation of HCOO* easier than COOH* on Cu (211), facilitating the HCOOH generation. Our results provide a new insight into eCO2RR and will be helpful in the development of cheap electrocatalysts for specific utilization.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: CO2 Reduction Techniques and Catalysts · Ionic liquids properties and applications · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
University of Chinese Academy of Sciences, Beijing 100039, China
Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian 116023, China
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
Department of Chemistry, Shanghai University, Shanghai 201210, China
Funding
Youth Innovation Promotion Association of the Chinese Academy of Sciences · National Natural Science Foundation of China · Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences · National Key Research and Development Programs of China · Basic Science Center Program for Ordered Energy Conversion of the National Natural Science Foundation of China · Shanghai Sailing Program
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