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Title: Efficient upgrading of CO to C3 fuel using asymmetric C-C coupling active sites

Journal Article · · Nature Communications
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  1. Univ. of Toronto, ON (Canada)
  2. Industrial Technology Research Inst., Hsinchu (Taiwan)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
  4. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)

The electroreduction of C1 feedgas to high-energy-density fuels provides an attractive avenue to the storage of renewable electricity. Much progress has been made to improve selectivity to C1 and C2 products, however, the selectivity to desirable high-energy-density C3 products remains relatively low. We reason that C3 electrosynthesis relies on a higher-order reaction pathway that requires the formation of multiple carbon-carbon (C-C) bonds, and thus pursue a strategy explicitly designed to couple C2 with C1 intermediates. We develop an approach wherein neighboring copper atoms having distinct electronic structures interact with two adsorbates to catalyze an asymmetric reaction. We achieve a record n-propanol Faradaic efficiency (FE) of (33 ± 1)% with a conversion rate of (4.5 ± 0.1) mA cm–2, and a record n-propanol cathodic energy conversion efficiency (EEcathodic half-cell) of 21%. The FE and EEcathodic half-cell represent a 1.3× improvement relative to previously-published CO-to-n-propanol electroreduction reports.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
Ontario Research Fund Research; Natural Sciences and Engineering Research Council of Canada (NSERC); CIFAR Bio-Inspired Solar Energy; University of Toronto Connaught; USDOE Office of Science (SC); Federal Economic Development Agency of Southern Ontario; Province of Ontario; IBM Canada Ltd.; Ontario Centres of Excellence; Mitacs; Canada Foundation for Innovation (CFI); Ontario Research Fund; Banting Postdoctoral Fellowships Program
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1624214
Journal Information:
Nature Communications, Vol. 10, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 88 works
Citation information provided by
Web of Science

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Cited By (1)

Current progress in electrocatalytic carbon dioxide reduction to fuels on heterogeneous catalysts journal January 2020

Figures / Tables (4)