Journal
NATURE CATALYSIS
Volume 3, Issue 10, Pages 804-812Publisher
NATURE RESEARCH
DOI: 10.1038/s41929-020-00504-x
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Funding
- Office of Naval Research (ONR) [N000141712608]
- Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub through the Office of Science of the US Department of Energy [DE-SC0004993]
- National Science Foundation [ACI-1548562]
- National Research Foundation (NRF) of Korea grant - Korean Government [NRF-2017R1E1A1A03071049]
- Irvine Materials Research Institute
- ExxonMobil
- U.S. Department of Defense (DOD) [N000141712608] Funding Source: U.S. Department of Defense (DOD)
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Electrochemical CO(2)reduction to value-added chemical feedstocks is of considerable interest for renewable energy storage and renewable source generation while mitigating CO2 emissions from human activity. Copper represents an effective catalyst in reducing CO2 to hydrocarbons or oxygenates, but it is often plagued by a low product selectivity and limited long-term stability. Here we report that copper nanowires with rich surface steps exhibit a remarkably high Faradaic efficiency for C2H4 that can be maintained for over 200 hours. Computational studies reveal that these steps are thermodynamically favoured compared with Cu(100) surface under the operating conditions and the stepped surface favours C-2 products by suppressing the C-1 pathway and hydrogen production.
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