Anchoring zero valence single atoms of nickel and iron on graphdiyne for hydrogen evolution

Electrocatalysis by atomic catalysts is a major focus of chemical and energy conversion effort. Although transition-metal-based bulk electrocatalysts for electrochemical application on energy conversion processes have been reported frequently, anchoring the stable transition-metal atoms (e.g. nickel...

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Published in:Nature communications 2018-04, Vol.9 (1), p.1460-10, Article 1460
Main Authors: Xue, Yurui, Huang, Bolong, Yi, Yuanping, Guo, Yuan, Zuo, Zicheng, Li, Yongjun, Jia, Zhiyu, Liu, Huibiao, Li, Yuliang
Format: Article
Language:English
Subjects:
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Anchoring
Catalysis
Catalysts
Catalytic activity
Electrocatalysts
Electrochemistry
Energy conversion
Fabrication
Humanities and Social Sciences
Hydrogen evolution reactions
Iron
multidisciplinary
Nickel
Science
Science (multidisciplinary)
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Summary:Electrocatalysis by atomic catalysts is a major focus of chemical and energy conversion effort. Although transition-metal-based bulk electrocatalysts for electrochemical application on energy conversion processes have been reported frequently, anchoring the stable transition-metal atoms (e.g. nickel and iron) still remains a practical challenge. Here we report a strategy for fabrication of ACs comprising only isolated nickel/iron atoms anchored on graphdiyne. Our findings identify the very narrow size distributions of both nickel (1.23 Å) and iron (1.02 Å), typical sizes of single-atom nickel and iron. The precision of this method motivates us to develop a general approach in the field of single-atom transition-metal catalysis. Such atomic catalysts have high catalytic activity and stability for hydrogen evolution reactions. Single atom catalysts provide the most efficient metal atoms usage and afford active site homogeneity, but surface attachment has proven challenging. Here, the authors use triple-bond-rich graphdiyne to anchor nickel/iron atoms and show high hydrogen evolution electrocatalysis activities.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-018-03896-4