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Site-specific electrodeposition enables self-terminating growth of atomically dispersed metal catalysts.

Abstract：

:The growth of atomically dispersed metal catalysts (ADMCs) remains a great challenge owing to the thermodynamically driven atom aggregation. Here we report a surface-limited electrodeposition technique that uses site-specific substrates for the rapid and room-temperature synthesis of ADMCs. We obtained ADMCs by the underpotential deposition of a non-noble single-atom metal onto the chalcogen atoms of transition metal dichalcogenides and subsequent galvanic displacement with a more-noble single-atom metal. The site-specific electrodeposition enables the formation of energetically favorable metal-support bonds, and then automatically terminates the sequential formation of metallic bonding. The self-terminating effect restricts the metal deposition to the atomic scale. The modulated ADMCs exhibit remarkable activity and stability in the hydrogen evolution reaction compared to state-of-the-art single-atom electrocatalysts. We demonstrate that this methodology could be extended to the synthesis of a variety of ADMCs (Pt, Pd, Rh, Cu, Pb, Bi, and Sn), showing its general scope for functional ADMCs manufacturing in heterogeneous catalysis.

journal_name

Nat Commun

journal_title

Nature communications

authors

Shi Y,Huang WM,Li J,Zhou Y,Li ZQ,Yin YC,Xia XH

doi

10.1038/s41467-020-18430-8

subject

Has Abstract

pub_date

2020-09-11 00:00:00

pages

4558

issue

1

issn

2041-1723

pii

10.1038/s41467-020-18430-8

journal_volume

11

pub_type

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