TY - JOUR
T1 - Potential Link between Cu Surface and Selective CO2 Electroreduction
T2 - Perspective on Future Electrocatalyst Designs
AU - Tomboc, Gracita M.
AU - Choi, Songa
AU - Kwon, Taehyun
AU - Hwang, Yun Jeong
AU - Lee, Kwangyeol
N1 - Funding Information:
This work was supported by National Research Foundation of Korea (NRF-2017R1A2B3005682, NRF-2019R1A6A1A11044070, 2019R1A2C2005521), Yonsei-KIST Convergence Research Program, the Hydrogen Energy Innovation Technology Development Program of the National Research Foundation of Korea (NRF) funded by the Korean government (Ministry of Science and ICT (MSIT)) (NRF-2019M3E6A1064709) and Korea Basic Science Institute under the R&D program (Project No. C38530) supervised by the Ministry of Science.
Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/4/1
Y1 - 2020/4/1
N2 - Electrochemical reduction of carbon dioxide (CO2RR) product distribution has been identified to be dependent on various surface factors, including the Cu facet, morphology, chemical states, doping, etc., which can alter the binding strength of key intermediates such as *CO and *OCCO during reduction. Therefore, in-depth knowledge of the Cu catalyst surface and identification of the active species under reaction conditions aid in designing efficient Cu-based electrocatalysts. This progress report categorizes various Cu-based electrocatalysts into four main groups, namely metallic Cu, Cu alloys, Cu compounds (Cu + non-metal), and supported Cu-based catalysts (Cu supported by carbon, metal oxides, or polymers). The detailed mechanisms for the selective CO2RR are presented, followed by recent relevant developments on the synthetic procedures for preparing Cu and Cu-based nanoparticles. Herein, the potential link between the Cu surface and CO2RR performance is highlighted, especially in terms of the chemical states, but other significant factors such as defective sites and roughened morphology of catalysts are equally considered during the discussion of current studies of CO2RR with Cu-based electrocatalysts to fully understand the origin of the significant enhancement toward C2 formation. This report concludes by providing suggestions for future designs of highly selective and stable Cu-based electrocatalysts for CO2RR.
AB - Electrochemical reduction of carbon dioxide (CO2RR) product distribution has been identified to be dependent on various surface factors, including the Cu facet, morphology, chemical states, doping, etc., which can alter the binding strength of key intermediates such as *CO and *OCCO during reduction. Therefore, in-depth knowledge of the Cu catalyst surface and identification of the active species under reaction conditions aid in designing efficient Cu-based electrocatalysts. This progress report categorizes various Cu-based electrocatalysts into four main groups, namely metallic Cu, Cu alloys, Cu compounds (Cu + non-metal), and supported Cu-based catalysts (Cu supported by carbon, metal oxides, or polymers). The detailed mechanisms for the selective CO2RR are presented, followed by recent relevant developments on the synthetic procedures for preparing Cu and Cu-based nanoparticles. Herein, the potential link between the Cu surface and CO2RR performance is highlighted, especially in terms of the chemical states, but other significant factors such as defective sites and roughened morphology of catalysts are equally considered during the discussion of current studies of CO2RR with Cu-based electrocatalysts to fully understand the origin of the significant enhancement toward C2 formation. This report concludes by providing suggestions for future designs of highly selective and stable Cu-based electrocatalysts for CO2RR.
KW - CO electroreduction
KW - catalyst surfaces
KW - copper
KW - oxidation states
KW - selectivity
UR - http://www.scopus.com/inward/record.url?scp=85081324282&partnerID=8YFLogxK
U2 - 10.1002/adma.201908398
DO - 10.1002/adma.201908398
M3 - Article
C2 - 32134526
AN - SCOPUS:85081324282
SN - 0935-9648
VL - 32
JO - Advanced Materials
JF - Advanced Materials
IS - 17
M1 - 1908398
ER -