Journal Article

PUBDB-2025-00710

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Unraveling the synergistic effects of Cu-Ag tandem catalysts during electrochemical CO$_2$ reduction using nanofocused X-ray probes

Frisch, M. L. ; Wu, L.Extern* ; Atlan, C.Extern* ; Ren, Z.Extern* ; Han, M. ; Tucoulou, R. ; Liang, L. ; Lu, J. ; Guo, A.Extern* ; Nong, H. N. ; Arinchtein, A. ; Sprung, M.XFEL.EU*DESY* ; Villanova, J. ; Richard, M.-I.Extern* ; Strasser, P. (Corresponding author)Extern*

2023
Springer Nature [London]

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Please use a persistent id in citations: doi:10.1038/s41467-023-43693-2  doi:10.3204/PUBDB-2025-00710

Abstract: Controlling the selectivity of the electrocatalytic reduction of carbon dioxide into value-added chemicals continues to be a major challenge. Bulk and surface lattice strain in nanostructured electrocatalysts affect catalytic activity and selectivity. Here, we unravel the complex dynamics of synergistic lattice strain and stability effects of Cu-Ag tandem catalysts through a previously unexplored combination of in situ nanofocused X-ray absorption spectroscopy and Bragg coherent diffraction imaging. Three-dimensional strain maps reveal the lattice dynamics inside individual nanoparticles as a function of applied potential and product yields. Dynamic relations between strain, redox state, catalytic activity and selectivity are derived. Moderate Ag contents effectively reduce the competing evolution of H$_2$ and, concomitantly, lead to an enhanced corrosion stability. Findings from this study evidence the power of advanced nanofocused spectroscopy techniques to provide new insights into the chemistry and structure of nanostructured catalysts.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Experimentebetreuung PETRA III (FS-PET-S)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. SELECTCO2 - Selective Electrochemical Reduction of CO2 to High Value Chemicals (851441) (851441)
4. EcoFuel - Renewable Electricity-based, cyclic and economic production of Fuel (101006701) (101006701)
5. CARINE - Coherent diffrAction foR a look Inside Nanostructures towards atomic rEsolution: catalysis and interface (818823) (818823)
6. FS-Proposal: I-20220139 (I-20220139) (I-20220139)

Experiment(s):

1. PETRA Beamline P10 (PETRA III)

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