Cited by 465CO2 Reduction Techniques and CatalystsElectrocatalysts for Energy ConversionCatalysts for Methane Reforming

Trends in electrochemical CO2 reduction activity for open and close-packed metal surfaces

Shi, Chuan, Hansen, Heine A., Lausche, Adam C., Nørskov, Jens K.·2014·Physical Chemistry Chemical Physics

Abstract

We present a theoretical analysis of trends in overpotentials for electrocatalytic CO2 reduction based on density functional theory calculations. The analysis is based on understanding variations in the free energy of intermediates and mapping out the potential at which different elementary steps are exergonic as a measure of the catalytic activity. We study different surface structures and introduce a simple model for including the effect of adsorbate-adsorbate interactions. We find that high coverages of CO under typical reaction conditions for the more reactive transition metals affect the catalytic activity towards the CO2 reduction reaction, but the ordering of metal activities is not changed. For the hydrogen evolution reaction, a high CO coverage shifts the maximum activity towards more reactive metals than Pt.

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Registry

Crossref · 10.1039/c3cp54822h

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48 of 48 references verified0 citation errors · 0 not checkable

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  • Increasing *CO coverage significantly decreases *CO binding energy due to adsorbate-adsorbate lateral repulsion, and consequently improves *CO dimerization.

    “For example, when increasing *CO coverage, it has been shown that *CO binding energy significantly decreases due to the adsorbate-adsorbate lateral repulsion, [58] and consequently, *CO dimerization improves.[33]”
  • A strong correlation between binding energies of various reaction intermediates on transition metals and a lack of ability to independently control them poses a significant intrinsic limitation in developing suitable catalysts for large-scale commercialization of the CO2 reduction reaction.

    “general understanding at present is that a strong correlation between binding energies of various reaction intermediates on transition metals and a lack of ability to independently control them poses a significant intrinsic limitation in developing suitable catalysts for large-scale commercialization of the CO2 reduction reaction.”
  • The origin of dominant H2 production during CO2 reduction on strong *CO binding catalysts such as Ni and Pt has been suggested to be that *H binding energies shift toward being weaker as *CO coverage increases due to repulsive interaction between *CO and *H, making Ni and Pt more active for HER.

    “The origin of the dominant H2 production during the CO2 reduction reaction has been suggested to be that for strong *CO binding catalysts such as Ni and Pt, the *H binding energies shift toward being weaker as the coverage of *CO increases due to a repulsive interaction between *CO and *H. This then makes Ni and Pt catalysts more active for the HER”

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Authors
Shi, C., Hansen, H. A., Lausche, A. C., & Nørskov, J. K.
Affiliations
  • Stanford University (US)
  • SLAC National Accelerator Laboratory (US)
Corresponding author
Nørskov, Jens K.
Venue
Physical Chemistry Chemical Physics
Published
2014
Volume
16
Issue
10
Pages
4720
ISSN
  • 1463-9076 (ISSN-L)
  • 1463-9084
OpenAlex
W2111927542
Cited by
465
References
48
Citations by year
2026: 19 · 2025: 36 · 2024: 41 · 2023: 52 · 2022: 56 · 2021: 46 · 2020: 53 · 2019: 44 · 2018: 39 · 2017: 25 · 2016: 25 · 2015: 15 · 2014: 14
FWCI
8.69
Type
journal article
Language
en
Open access
closed
Locations
  • Physical Chemistry Chemical Physics (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Multidisciplinary University Research Initiative
  • Air Force Office of Scientific Research
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Chemical Engineering › Catalysis › Catalysts for Methane Reforming
Keywords
electrochemical CO2 reduction, overpotential, transition metal electrocatalysts, surface structure, lateral interactions, hydrogen evolution reaction

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