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Title: Efficient solar-driven electrochemical CO 2 reduction to hydrocarbons and oxygenates

Solar to chemical energy conversion could provide an alternative to mankind's unsustainable use of fossil fuels. One promising approach is the electrochemical reduction of CO 2 into chemical products, in particular hydrocarbons and oxygenates which are formed by multi-electron transfer reactions. Here, a nanostructured Cu-Ag bimetallic cathode is utilized to selectively and efficiently facilitate these reactions. When operated in an electrolysis cell, the cathode provides a constant energetic efficiency for hydrocarbon and oxygenate production. As a result, when coupled to Si photovoltaic cells, solar conversion efficiencies of 3-4% to the target products are achieved for 0.35 to 1 Sun illumination. Use of a four-terminal III-V/Si tandem solar cell configuration yields a conversion efficiency to hydrocarbons and oxygenates exceeding 5% at 1 Sun illumination. Here, this study provides a clear framework for the future advancement of efficient solar-driven CO 2 reduction devices.In a process analogous to natural photosynthesis, solar-driven reduction of carbon dioxide to hydrocarbon and oxygenate products is demonstrated with an overall efficiency exceeding 5%.
Authors:
ORCiD logo [1] ;  [2] ; ORCiD logo [3] ; ORCiD logo [2] ; ORCiD logo [1] ; ORCiD logo [2] ;  [2] ; ORCiD logo [2] ; ORCiD logo [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Hungarian Academy of Sciences Centre for Energy Research, Budapest (Hungary)
Publication Date:
Grant/Contract Number:
AC02-05CH11231
Type:
Accepted Manuscript
Journal Name:
Energy & Environmental Science
Additional Journal Information:
Journal Volume: 10; Journal Issue: 10; Related Information: © The Royal Society of Chemistry.; Journal ID: ISSN 1754-5692
Publisher:
Royal Society of Chemistry
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1465416

Gurudayal, Gurudayal, Bullock, James, Srankó, Dávid F., Towle, Clarissa M., Lum, Yanwei, Hettick, Mark, Scott, M. C., Javey, Ali, and Ager, Joel. Efficient solar-driven electrochemical CO2 reduction to hydrocarbons and oxygenates. United States: N. p., Web. doi:10.1039/c7ee01764b.
Gurudayal, Gurudayal, Bullock, James, Srankó, Dávid F., Towle, Clarissa M., Lum, Yanwei, Hettick, Mark, Scott, M. C., Javey, Ali, & Ager, Joel. Efficient solar-driven electrochemical CO2 reduction to hydrocarbons and oxygenates. United States. doi:10.1039/c7ee01764b.
Gurudayal, Gurudayal, Bullock, James, Srankó, Dávid F., Towle, Clarissa M., Lum, Yanwei, Hettick, Mark, Scott, M. C., Javey, Ali, and Ager, Joel. 2017. "Efficient solar-driven electrochemical CO2 reduction to hydrocarbons and oxygenates". United States. doi:10.1039/c7ee01764b. https://www.osti.gov/servlets/purl/1465416.
@article{osti_1465416,
title = {Efficient solar-driven electrochemical CO2 reduction to hydrocarbons and oxygenates},
author = {Gurudayal, Gurudayal and Bullock, James and Srankó, Dávid F. and Towle, Clarissa M. and Lum, Yanwei and Hettick, Mark and Scott, M. C. and Javey, Ali and Ager, Joel},
abstractNote = {Solar to chemical energy conversion could provide an alternative to mankind's unsustainable use of fossil fuels. One promising approach is the electrochemical reduction of CO2 into chemical products, in particular hydrocarbons and oxygenates which are formed by multi-electron transfer reactions. Here, a nanostructured Cu-Ag bimetallic cathode is utilized to selectively and efficiently facilitate these reactions. When operated in an electrolysis cell, the cathode provides a constant energetic efficiency for hydrocarbon and oxygenate production. As a result, when coupled to Si photovoltaic cells, solar conversion efficiencies of 3-4% to the target products are achieved for 0.35 to 1 Sun illumination. Use of a four-terminal III-V/Si tandem solar cell configuration yields a conversion efficiency to hydrocarbons and oxygenates exceeding 5% at 1 Sun illumination. Here, this study provides a clear framework for the future advancement of efficient solar-driven CO2 reduction devices.In a process analogous to natural photosynthesis, solar-driven reduction of carbon dioxide to hydrocarbon and oxygenate products is demonstrated with an overall efficiency exceeding 5%.},
doi = {10.1039/c7ee01764b},
journal = {Energy & Environmental Science},
number = 10,
volume = 10,
place = {United States},
year = {2017},
month = {8}
}

Works referenced in this record:

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journal, December 2010
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Comparing Photosynthetic and Photovoltaic Efficiencies and Recognizing the Potential for Improvement
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