Journal Article

FZJ-2018-07139

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Electrifying model catalysts for understanding electrocatalytic reactions in liquid electrolytes

Faisal, F. ; Stumm, C. ; Bertram, M. ; Waidhas, F. ; Lykhach, Y. ; Cherevko, S.FZJ* ; Xiang, F. ; Ammon, M. ; Vorokhta, M. ; Šmíd, B. ; Skála, T. ; Tsud, N. ; Neitzel, A. ; Beranová, K. ; Prince, K. C. ; Geiger, S. ; Kasian, O. ; Wähler, T. ; Schuster, R. ; Schneider, M. A. ; Matolín, V. ; Mayrhofer, K.FZJ* ; Brummel, O. (Corresponding author) ; Libuda, J. (Corresponding author)

2018
Nature Publishing Group Basingstoke

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Please use a persistent id in citations: doi:10.1038/s41563-018-0088-3

Abstract: Electrocatalysis is at the heart of our future transition to a renewable energy system. Most energy storage and conversion technologies for renewables rely on electrocatalytic processes and, with increasing availability of cheap electrical energy from renewables, chemical production will witness electrification in the near future1,2,3. However, our fundamental understanding of electrocatalysis lags behind the field of classical heterogeneous catalysis that has been the dominating chemical technology for a long time. Here, we describe a new strategy to advance fundamental studies on electrocatalytic materials. We propose to ‘electrify’ complex oxide-based model catalysts made by surface science methods to explore electrocatalytic reactions in liquid electrolytes. We demonstrate the feasibility of this concept by transferring an atomically defined platinum/cobalt oxide model catalyst into the electrochemical environment while preserving its atomic surface structure. Using this approach, we explore particle size effects and identify hitherto unknown metal–support interactions that stabilize oxidized platinum at the nanoparticle interface. The metal–support interactions open a new synergistic reaction pathway that involves both metallic and oxidized platinum. Our results illustrate the potential of the concept, which makes available a systematic approach to build atomically defined model electrodes for fundamental electrocatalytic studies.

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Contributing Institute(s):

1. Helmholtz-Institut Erlangen-Nürnberg Erneuerbare Energien (IEK-11)
2. JARA - HPC (JARA-HPC)

Research Program(s):

1. 134 - Electrolysis and Hydrogen (POF3-134) (POF3-134)
2. Ab initio study of amorphous Sb (jara0176_20171101) (jara0176_20171101)

Appears in the scientific report 2018

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Database coverage:
; BIOSIS Previews ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 30 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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