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Title
Japanese:Fourteen-membered macrocyclic cobalt complex for the electrolysis of low-concentration gaseous carbon dioxide with high faradaic efficiency toward carbon monoxide 
English:Fourteen-membered macrocyclic cobalt complex for the electrolysis of low-concentration gaseous carbon dioxide with high faradaic efficiency toward carbon monoxide 
Author
Japanese: Takeshi Inada, Shoji Iguchi, Masahiro Yamamoto, Yusuke Hasegawa, Makoto Moriya, Junya Ohyama, Yuta Nabae, Shimpei Naniwa, Tsunehiro Tanaka, Kentaro Teramura.  
English: Takeshi Inada, Shoji Iguchi, Masahiro Yamamoto, Yusuke Hasegawa, Makoto Moriya, Junya Ohyama, Yuta Nabae, Shimpei Naniwa, Tsunehiro Tanaka, Kentaro Teramura.  
Language English 
Journal/Book name
Japanese:Catalysis Science & Technology 
English:Catalysis Science & Technology 
Volume, Number, Page Vol. 14    No. 2    pp. 391-396
Published date Nov. 2023 
Publisher
Japanese:The Royal Society of Chemistry 
English:The Royal Society of Chemistry 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL http://dx.doi.org/10.1039/D3CY01177A
 
DOI https://doi.org/10.1039/D3CY01177A
Abstract It is necessary to lower the overpotential for CO2 reduction to enable the practical application of CO2 electrolysis in industrial scenarios. In gaseous CO2 electrolysis with a gas diffusion electrode, a fourteen-membered macrocyclic cobalt complex (Co 14-membered ring: Co窶�14MR) was found to be an excellent cathode catalyst for the reduction of CO2 to CO. A high current density (101 mA cm竏�2 at 竏�2.05 V (Ag/AgCl)), high faradaic efficiency (>99%), low overpotential (onset potential of CO formation: 竏�0.13 V (RHE)), and high durability (stable performance until turn over number (TON) = 2.3 ﾃ� 104 per Co atom) were achieved. Moreover, CO was generated with a faradaic efficiency of 95% during CO2 electrolysis with the Co窶�14MR cathode under a low CO2 concentration (10% CO2). The single-atom Co site in the Co窶�14MR catalyst enabled the near-complete suppression of undesired H2 evolution.

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