TY - JOUR
T1 - Highly Efficient Electrochemical CO2 Reduction Reaction to CO with One-Pot Synthesized Co-Pyridine-Derived Catalyst Incorporated in a Nafion-Based Membrane Electrode Assembly
AU - Fujinuma, Naohiro
AU - Ikoma, Atsushi
AU - Lofland, Samuel E.
N1 - Publisher Copyright:
© 2020 Wiley-VCH GmbH
PY - 2020/10/1
Y1 - 2020/10/1
N2 - There is great need for the development of an electrochemical CO2 reduction reaction (CO2RR) process with high Faraday efficiency (FE), energy efficiency (EE), and current density for practical utilization of CO2. Here, a facile one-pot synthesis of a catalyst is reported that is based on cobalt and poly-4-vinylpyridine that can perform CO2RR to CO predominantly with respect to the hydrogen evolution reaction in a nafion-based membrane electrode assembly and can work in pH ranging from 2 to 7. Cell optimization results in CO2RR to CO with 92% FE and 58% EE at 85 mA cm−2, while showing no noticeable degradation in FE at 20 h. These characteristics are attributed to synthesis and processing conditions which promote nearly uniform coordination of pyridine moieties with Co at the nanoscale in order to produce the appropriate complex necessary for catalysis. Outstanding performance combined with the ease of production, scalability of the method, and accessibility of components pave the way toward the commercialization of an electrochemical CO2RR.
AB - There is great need for the development of an electrochemical CO2 reduction reaction (CO2RR) process with high Faraday efficiency (FE), energy efficiency (EE), and current density for practical utilization of CO2. Here, a facile one-pot synthesis of a catalyst is reported that is based on cobalt and poly-4-vinylpyridine that can perform CO2RR to CO predominantly with respect to the hydrogen evolution reaction in a nafion-based membrane electrode assembly and can work in pH ranging from 2 to 7. Cell optimization results in CO2RR to CO with 92% FE and 58% EE at 85 mA cm−2, while showing no noticeable degradation in FE at 20 h. These characteristics are attributed to synthesis and processing conditions which promote nearly uniform coordination of pyridine moieties with Co at the nanoscale in order to produce the appropriate complex necessary for catalysis. Outstanding performance combined with the ease of production, scalability of the method, and accessibility of components pave the way toward the commercialization of an electrochemical CO2RR.
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U2 - 10.1002/aenm.202001645
DO - 10.1002/aenm.202001645
M3 - Article
AN - SCOPUS:85089253510
SN - 1614-6832
VL - 10
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 39
M1 - 2001645
ER -