Sulfur-Decorated Ni-N-C Catalyst for Electrocatalytic CO 2 Reduction with Near 100 % CO Selectivity

Developing highly efficient electrocatalysts for electrochemical CO reduction (ECR) to value-added products is important for CO 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 N...

Full description

Saved in:
Bibliographic Details
Published in:ChemSusChem 2022-10, Vol.15 (19), p.e202200870
Main Authors: Lu, Song, Zhang, Yang, Mady, Mohamed F, Egwu Eleri, Obinna, Mekonnen Tucho, Wakshum, Mazur, Michal, Li, Ang, Lou, Fengliu, Gu, Minfen, Yu, Zhixin
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Developing highly efficient electrocatalysts for electrochemical CO reduction (ECR) to value-added products is important for CO 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 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-N moieties. This work provides insights for the design and synthesis of nonmetal atom-decorated M-N-C-based ECR electrocatalysts.
ISSN:1864-5631
1864-564X
DOI:10.1002/cssc.202200870