The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.
CO 2 Reduction at Low Overpotential on Cu Electrodes Resulting from the Reduction of Thick Cu 2 O Films
Abstract
Modified Cu electrodes were prepared by annealing Cu foil in air and electrochemically reducing the resulting Cu(2)O layers. The CO(2) reduction activities of these electrodes exhibited a strong dependence on the initial thickness of the Cu(2)O layer. Thin Cu(2)O layers formed by annealing at 130 °C resulted in electrodes whose activities were indistinguishable from those of polycrystalline Cu. In contrast, Cu(2)O layers formed at 500 °C that were ≥~3 μm thick resulted in electrodes that exhibited large roughness factors and required 0.5 V less overpotential than polycrystalline Cu to reduce CO(2) at a higher rate than H(2)O. The combination of these features resulted in CO(2) reduction geometric current densities >1 mA/cm(2) at overpotentials <0.4 V, a higher level of activity than all previously reported metal electrodes evaluated under comparable conditions. Moreover, the activity of the modified electrodes was stable over the course of several hours, whereas a polycrystalline Cu electrode exhibited deactivation within 1 h under identical conditions. The electrodes described here may be particularly useful for elucidating the structural properties of Cu that determine the distribution between CO(2) and H(2)O reduction and provide a promising lead for the development of practical catalysts for electrolytic fuel synthesis.
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In the citing paper
“For example, using surface sensitive in-situ Raman spectroscopy with selected-ion flow tube mass spectrometry, Mandal et al. did not detect CO2RR products as long as Cu2O was present at the catalyst surface (Figure.7).[104]”
From Electrochemical CO 2 Reduction into Chemical Feedstocks: From Mechanistic Electrocatalysis Models to System Design (2019) · cites this paper as [104]
In the citing paper
“Their DFT studies suggested that the reduction of Cu2O is favored both kinetically and energetically over CO2RR.”
From Electrochemical CO 2 Reduction into Chemical Feedstocks: From Mechanistic Electrocatalysis Models to System Design (2019) · cites this paper as [104]
In the citing paper
“In contrast to the above reports, a few other DFT studies reveal that sub-surface oxygen has negligible effect on the CO2RR activity of Cu. [103,104]”
From Electrochemical CO 2 Reduction into Chemical Feedstocks: From Mechanistic Electrocatalysis Models to System Design (2019) · cites this paper as [104]
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Metadata
- Authors
- Li, C. W., & Kanan, M. W.
- Affiliations
- Stanford University (US)
- Corresponding author
- Kanan, Matthew W.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-04-20
- Volume
- 134
- Issue
- 17
- Pages
- 7231-7234
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2082498048
- Cited by
- 2,000
- References
- 29
- Citations by year
- 2026: 84 · 2025: 109 · 2024: 126 · 2023: 128 · 2022: 168 · 2021: 189 · 2020: 235 · 2019: 194 · 2018: 210 · 2017: 181 · 2016: 155 · 2015: 105 · 2014: 64 · 2013: 44 · 2012: 8
- FWCI
- 27.14
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of the American Chemical Society (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Science Foundation
- Stanford Precourt Institute for Energy
- 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
- CO2 reduction, copper electrode, low overpotential, electrode surface roughness, film thickness dependence, annealing temperature, electrode deactivation, electrocatalysis
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