首页|Single atom Cu-N-C catalysts for the electro-reduction of CO2 to CO assessed by rotating ring-disc electrode

Single atom Cu-N-C catalysts for the electro-reduction of CO2 to CO assessed by rotating ring-disc electrode

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The electrochemical CO2 reduction reaction(CO2RR)to controllable chemicals is considered as a promis-ing pathway to store intermittent renewable energy.Herein,a set of catalysts based on copper-nitrogen-doped carbon xerogel(Cu-N-C)are successfully developed varying the copper amount and the nature of the copper precursor,for the efficient CO2RR.The electrocatalytic performance of Cu-N-C materials is assessed by a rotating ring-disc electrode(RRDE),technique still rarely explored for CO2RR.For compar-ison,products are also characterized by online gas chromatography in a H-cell.The as-synthesized Cu-N-C catalysts are found to be active and highly CO selective at low overpotentials(from-0.6 to-0.8 V vs.RHE)in 0.1 M KHCO3,while H2 from the competitive water reduction appears at larger overpotentials(-0.9 V vs.RHE).The optimum copper acetate-derived catalyst containing Cu-N4 moieties exhibits a CO2-to-CO turnover frequency of 997 h-1 at-0.9 V vs.RHE with a H2/CO ratio of 1.8.These results demonstrate that RRDE configuration can be used as a feasible approach for identifying electrolysis prod-ucts from CO2RR.

Cu-N-CCarbon xerogelRotating ring disc electrodeCarbon dioxide reduction reactionCarbon monoxide

S.Pérez-Rodríguez、M. Gutiérrez-Roa、C.Giménez-Rubio、D.Ríos-Ruiz、P.Arévalo-Cid、M.V.Martínez-Huerta、A.Zitolo、M.J.Lázaro、D.Sebastián

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Instituto de Carboquímica(CSIC),Miguel Luesma Castán 4,50018 Zaragoza,Spain

Instituto de Catálisis y Petroleoquímica(CSIC),Marie Curie 2,28049 Madrid,Spain

Synchrotron SOLEIL,L'Orme des Merisiers,Départementale 128,91190,France

"STORELEC"projectMCIN/AEI/10.13039/501100011033Gobierno de AragónMCIN/AEI/10.13039/501100011033CSICComunidad Autonoma de Madrid

PID2020-115848RB-C21TED2021-129694B-C22IJC2019-041874-I2021-ICB-04

2024

10.1016/j.jechem.2023.09.005

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.88(1)
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