Sulfur‐Decorated Ni−N−C Catalyst for Electrocatalytic CO2 Reduction with Near 100 % CO Selectivity
Lu, Song; Zhang, Yang; Mady, Mohamed F; Eleri, Obinna Egwu; Tucho, Wakshum Mekonnen; Mazur, Michal; Li, Ang; Lou, Fengliu; Gu, Mingfen; Yu, Zhixin
Peer reviewed, Journal article
Published version
Permanent lenke
https://hdl.handle.net/11250/3036756Utgivelsesdato
2022-08Metadata
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Originalversjon
Lu, S., Zhang, Y., Mady, M.F., Eleri, O.E., Tucho, W.M., Mazur, M., Li, A., Lou, F., Gu, M., Yu, Z. (2022) Sulfur‐Decorated Ni−N−C Catalyst for Electrocatalytic CO2 Reduction with Near 100 % CO Selectivity. ChemSusChem, 15(19), e202200870 10.1002/cssc.202200870Sammendrag
Developing highly efficient electrocatalysts for electrochemical CO2 reduction (ECR) to value-added products is important for CO2 conversion and utilization technologies. In this work, a sulfur-doped Ni−N−C catalyst is fabricated through a facile ion-adsorption and pyrolysis treatment. The resulting Ni−NS−C catalyst exhibits higher activity in ECR to CO than S-free Ni−N−C, yielding a current density of 20.5 mA cm−2 under −0.80 V versus a reversible hydrogen electrode (vs. RHE) and a maximum CO faradaic efficiency of nearly 100 %. It also displays excellent stability with negligible activity decay after electrocatalysis for 19 h. A combination of experimental investigations and DFT calculations demonstrates that the high activity and selectivity of ECR to CO is due to a synergistic effect of the S and Ni−NX moieties. This work provides insights for the design and synthesis of nonmetal atom-decorated M−N−C-based ECR electrocatalysts.