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Rapid formation of self-organised Ag nanosheets with high efficiency and selectivity in CO2 electroreduction to CO

Abstract

The rapid and scalable production of electrocatalysts with high conversion efficiency and product selectivity are essential for the practical application of electrochemical CO2 reduction. Here we report highly efficient and selective free-standing silver (Ag) nanosheet-based electrocatalysts that were produced in under 10 min via an electrochemical oxidative-reductive approach. The hierarchical structures of Ag nanosheets provide enhanced surface area and favourable gas transport/diffusion. The interconnected nanosize Ag (~ 45 ± 10 nm) sheets produce among the best performance for aqueous CO2 to CO reduction for this class of material. The conversion selectivity was approximately 95 % at overpotential as low as 0.29 V. This rationally experimental design strategy may inspire efforts towards developing rapidly synthesized and efficient CO2 reduction electrocatalysts.

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Publication details

The article was received on 03 Feb 2017, accepted on 03 Apr 2017 and first published on 06 Apr 2017


Article type: Communication
DOI: 10.1039/C7SE00069C
Citation: Sustainable Energy Fuels, 2017, Accepted Manuscript
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    Rapid formation of self-organised Ag nanosheets with high efficiency and selectivity in CO2 electroreduction to CO

    C. Lee, Y. Zhao, C. Wang, D. Mitchell and G. G. Wallace, Sustainable Energy Fuels, 2017, Accepted Manuscript , DOI: 10.1039/C7SE00069C

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