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

Journal Article


Abstract


  • Rapid and scalable production of electrocatalysts with high conversion efficiency and product selectivity are essential for practical application of electrochemical CO2 reduction. Here we report highly efficient and selective free-standing silver (Ag) nanosheet-based electrocatalysts that were produced in less than 10 min via an electrochemical oxidative–reductive approach. The hierarchical structures of Ag nanosheets provide an 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 materials. The conversion selectivity was approximately 95% at an overpotential as low as 0.29 V. This rational experimental design strategy may inspire efforts towards developing rapidly synthesized and efficient CO2 reduction electrocatalysts.

Publication Date


  • 2017

Citation


  • Lee, C., Zhao, Y., Wang, C., Mitchell, D. R. G. & Wallace, G. G. (2017). Rapid formation of self-organised Ag nanosheets with high efficiency and selectivity in CO2 electroreduction to CO. Sustainable Energy and Fuels, 1 (5), 1023-1027.

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2822

Number Of Pages


  • 4

Start Page


  • 1023

End Page


  • 1027

Volume


  • 1

Issue


  • 5

Place Of Publication


  • United Kingdom

Abstract


  • Rapid and scalable production of electrocatalysts with high conversion efficiency and product selectivity are essential for practical application of electrochemical CO2 reduction. Here we report highly efficient and selective free-standing silver (Ag) nanosheet-based electrocatalysts that were produced in less than 10 min via an electrochemical oxidative–reductive approach. The hierarchical structures of Ag nanosheets provide an 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 materials. The conversion selectivity was approximately 95% at an overpotential as low as 0.29 V. This rational experimental design strategy may inspire efforts towards developing rapidly synthesized and efficient CO2 reduction electrocatalysts.

Publication Date


  • 2017

Citation


  • Lee, C., Zhao, Y., Wang, C., Mitchell, D. R. G. & Wallace, G. G. (2017). Rapid formation of self-organised Ag nanosheets with high efficiency and selectivity in CO2 electroreduction to CO. Sustainable Energy and Fuels, 1 (5), 1023-1027.

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2822

Number Of Pages


  • 4

Start Page


  • 1023

End Page


  • 1027

Volume


  • 1

Issue


  • 5

Place Of Publication


  • United Kingdom