1. Facile synthesis of Cu–Ag bimetallic electrocatalyst with prior C2 products at lower overpotential for CO2 electrochemical reduction
- Author
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Zhi-Yuan Chang, Jianhui Fang, Sheng-Juan Huo, and Jin-Mei He
- Subjects
Materials science ,Inorganic chemistry ,General Physics and Astronomy ,02 engineering and technology ,Surfaces and Interfaces ,General Chemistry ,Overpotential ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Electrochemistry ,Electrocatalyst ,01 natural sciences ,0104 chemical sciences ,Surfaces, Coatings and Films ,Catalysis ,Chemical engineering ,Reversible hydrogen electrode ,Single displacement reaction ,0210 nano-technology ,Bimetallic strip ,Template method pattern - Abstract
In this article, we reported the electrochemical reduction of CO 2 at Cu–Ag bimetallic electrocatalysts, which can be facilely and reproducibly synthesized by hydrogen bubble template method and galvanic displacement reaction. An interesting finding was that the faradic yields of products can be tuned by changing the composition of the Ag component. The as-prepared catalyst can maintain higher activity and stability, especially the positively shifted potential to −0.74 V (vs. reversible hydrogen electrode) of detectable 14% C 2 products and suppression of H 2 for the Cu–Ag catalyst with the replacement time of 10 s. The synergistic effect of the catalyst has been reported to C 2 . In addition, the potential dependent rule for products was illustrated as well and volcano shape change towards C 2 was worthy to be pointed. Our research will deepen the understanding of the surface electrocatalytic reaction and provide the insight into the factors to design excellent catalysts.
- Published
- 2017
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