Insight into the active sites of M-N-C single-atom catalysts for electrochemical CO2 reduction

被引：19

作者：

Pan, Qin ^{[1
]}

Chen, Yang ^{[1
]}

Jiang, Shuoshuo ^{[1
]}

Cui, Xin ^{[1
]}

Ma, Guanghuan ^{[1
]}

Ma, Tianyi ^{[2
]}

机构：

[1] Liaoning Univ, Coll Chem, Inst Clean Energy Chem, Shenyang 110036, Peoples R China

[2] RMIT Univ, Sch Sci, Melbourne, Vic 3000, Australia

来源：

ENERGYCHEM | 2023年 / 5卷 / 06期

基金：

澳大利亚研究理事会; 中国国家自然科学基金;

关键词：

Single-atom catalysts; Active site; M-N-C materials; Electrocatalysis; Carbon dioxide reduction; EFFICIENT ELECTROCATALYTIC CO2; ATOMICALLY DISPERSED FE; CARBON NANOSHEETS; COORDINATION ENVIRONMENT; ELECTROREDUCTION; NITROGEN; CONVERSION; FRAMEWORK; ELECTRO;

D O I：

10.1016/j.enchem.2023.100114

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electrochemical carbon dioxide reduction (CO2RR) to chemicals and fuels is a promising way to alleviate global environmental problems and energy issues. Among the various catalysts, metal-nitrogen-carbon (M-N-C) single -atom catalysts (SACs) have intrigued great excitement in catalysis due to their low cost and high efficiency. However, precisely identifying the active site structure at an atomic level and disclosing the structure -performance relationship remains a grand challenge. In this review, the active structures of the M-N-C cata-lysts in CO2RR are first summarized, including isolated metal-Nx (x = 2, 3, 4, 5) sites, dual-metal centers, and the crucial role of substrates. Subsequently, the role of active structure in changing the adsorption properties of reactants toward CO2RR is discussed. In particular, the structure-performance relationship and constructive strategies to optimize the CO2RR pathway are highlighted. Finally, challenges and potential outlooks for the development of M-N-C SACs toward CO2RR are presented.

引用

页数：23

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