Insight into CO2 Electroreduction through rational Catalyst and Electrolyte Design

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Prof Beatriz Roldan Cuenya
Fritz Haber Institute of the Max Planck Society
Insight into CO 2 Electroreduction through rational Catalyst and Electrolyte Design
Beatriz Roldan Cuenya
Department of Interface Science, Fritz -Haber -Institute of the Max Planck Society , 14195 Berlin Germany
T he utilization of fossil fuels as the main energy source gives rise to serious environmental issues, including global warming caused by the continuously increasing level of atmospheric CO 2. Recently, the electrochemical conversion of CO 2 (CO 2RR) to chemicals and fuels driven by electricity derived from renewable energy has been recognized as a promising strategy towards sustainable energy. In my talk I will provide examples of recent advances in the development of highly active plasma -modified single crystals , nanostructured thin films and nanoparti cle (NP) electrocatalysts (Cu, Ag, Zn, and Cu- M with M = Zn, Sn ) and how their structure (crystal orientation , atomic arr angement, size, shape, defects ), oxidation state and composition i nfluence the ir selectivity in CO 2RR. I will also discuss how importan t morphological motives and chemical sites can be created and re generated in pulsed electrochemistry experiments. Additionally , the determining role of the electrolyte in the surface restructuring, reaction activity and selectivity will be illustrated . Finally, the importance of in situ and operando characterization methods (e.g. EC -AFM, Liquid-TEM, XAS, XPS , XRD) to gain in depth understanding on the structure - and electrolyte -sensitivity of real CO 2RR catalysts under working conditions will be demonstr ated. Our results are expected to open up new routes for the reutilization of CO 2 through its direct selective conversion into higher value products such as ethylene and ethanol.
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  • Venue

    Theatre C, Purdie

  • Date

    February 26, 2020

  • Time

    From: 14h00 To: 15h00

  • Sponsor

    University of St Andrews
    The oldest university in Scotland, with international renown for both research and education of undergraduates and postgraduates.

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