Department of Interface Chemistry and Surface Engineering Electrocatalysis Group Düsseldorf, Germany International Conference on Combinatorial Materials.

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Presentation transcript:

Department of Interface Chemistry and Surface Engineering Electrocatalysis Group Düsseldorf, Germany International Conference on Combinatorial Materials Research, Ghent Jan–Philipp Grote, Aleksandar R. Zeradjanin, Serhiy Cherevko, Karl J.J. Mayrhofer Electrochemical CO 2 Reduction A Combinatorial High-Throughput Approach for Catalytic Activity, Stability and Selectivity Investigations

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro Motivation Electrolyte Ions Aqueos- / non-aqueous Electrolytes Solved gases pH Impurities Operation conditions Potential / current EC technique Temperature Catalyst Composition Morphology Surface oxide Deposition of impurities Additional analysis Dissolution Product evolution Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro Scanning flow cell Electrolyte supply Counter electrode Electrolyte outlet Reference electrode Silicon sealing 2mm Working electrode Ar Channel diameter: 0.2/0.4/1/3 mm Flow rate: μl/min CE: Pt-wire or C-rod WE area: 0.13/0.25/1.1/10mm 2 RE: Ag/AgCl/3M KCl C. a. Laska et al., Electrochim. Acta, 159, 198–209 (2015) Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro Fast screening of high surface area cats 0.5 mm 1 mm Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro SFC - Fast Screening of Alloys Prof. Ludwig, Ruhr-Universität Bochum, Institute of Materials, Faculty of Mechanical Engineering 4-inch Si-wafer Argon atmosphere Magnetron sputter deposition Cu/Co Alloy Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro SFC-ICP-MS Pt-Cu alloy Oxidation Reduction A. Schuppert, A.Topalov, A. Savan, A. Ludwig, and K. J. J. Mayrhofer, ChemElectroChem, 1, 358–361 (2014). A. A. Topalov et al., Angew. Chem. Int. Ed. Engl., 51, 12613–5 (2012). Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro SFC-Online Electrochemical Mass Spectrometer Stability Selectivity J.-P. Grote, A. R. Zeradjanin, S. Cherevko, and K. J. J. Mayrhofer, Rev. Sci. Instrum., 85, (2014) Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro SFC-OLEMS Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro SFC-OLEMS J.-P. Grote, A. R. Zeradjanin, S. Cherevko, and K. J. J. Mayrhofer, Rev. Sci. Instrum., 85, (2014) Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro CO 2 reduction Pd, Hg, In, Sn, Cd, Tl, Bi Cu Au, Ag, Zn Ni,Fe, Pt, Ti, Ga, Co HCOO - CO H2H2 Hydrocarbons CO 2 "Carbon cycle" by Diagram adapted from U.S. DOE, Biological and Environmental Research Information System. - Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro Cu-Co alloys Cu-Co alloy Cu at % Ethylene Alcohols Methane Hydrogen Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro Cu and Cu alloy oxides Brass Brass ox Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro Carbon corrosion Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro SFC-OLEMS for high surface area cats 2 mm 3 mm Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro Carbon corrosion Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro Summary Scanning flow cell Automated: Potentiostat control Position change Electrolyte change Purging gas control Defined surface area for reproducible electrochemistry Temperature control SFC-ICP-MS for dissolution studies High sensitive multi element analysis Relation between potential and dissolution Quantitative results SFC-OLEMS for selectivity studies Direct detection of volatile products Response time below two seconds Semi-quantitative results Motivation SFC SFC-ICP-MS SFC-OLEMS Conclusion

Max-Planck-Institut für Eisenforschung GmbH, Germany International Conference on Combinatorial Materials Research, Ghent Intro Thanks for your attention! Electrocatalysis Group from Max-Planck-Institut für Eisenforschung