Journal
ELECTROCHEMICAL ENERGY REVIEWS
Volume 5, Issue SUPPL 2, Pages -Publisher
SPRINGERNATURE
DOI: 10.1007/s41918-022-00142-w
Keywords
Electrocatalysis; Single-atom catalysts; Graphene; Fuel cells; Water splitting; Carbon dioxide conversion
Categories
Funding
- National Natural Science Foundation of China [21673064, 51802059, 21905070, 21503059]
- State Grid Heilongjiang Electric Power Co., Ltd., Technology Project Funding
- China Postdoctoral Science Foundation [2018M631938, 2018T110307, 2017M621284]
- Heilongjiang Postdoctoral Fund [LBH-Z17074, LBH-Z18066]
- Fundamental Research Funds for the Central Universities [HIT. NSRIF. 2019040, 2019041]
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Heterogeneous single-atom catalysts (SACs) have attracted significant attention in electrochemical applications due to their high metal utilization, well-defined active sites, tunable selectivity, and excellent activity. Graphene, with its high surface area, excellent conductivity, and unique electronic properties, has been widely used as a substrate for SACs. This review provides an overview of the synthetic methods for graphene-supported single-atom catalysts (G-SACs), discusses advanced characterization techniques, summarizes recent progress in G-SACs for various electrochemical applications, and presents challenges and outlook for the development of G-SACs with outstanding catalytic activity, stability, and selectivity.
Recently, heterogeneous single-atom catalysts (SACs) have attracted enormous attention in electrochemical applications owing to their advantages of high metal utilization, well-defined active sites, tunable selectivity, and excellent activity. To avoid the aggregation of atomically dispersed metal sites, an appropriate support has to be adopted to reduce the surface free energy of catalysts. Graphene with a high surface area, outstanding conductivity, and unique electronic properties has generally been utilized as the substrate for SACs. Moreover, the correlations between metal-support interactions and the electrocatalytic performance at the atomic scale can be studied on graphene-supported single-atom catalyst (G-SAC) nanoplatforms. In this review, we start from an overview of the synthetic methods for G-SACs. Subsequently, several advanced and effective characterization techniques are discussed. Then, we present a comprehensive summary of recent progress in G-SACs for a variety of electrochemical applications. Finally, we present challenges for and an outlook on the development of G-SACs with outstanding catalytic activity, stability, and selectivity.
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