Reactant friendly hydrogen evolution interface based on di-anionic MoS2 surface

Engineering the reaction interface to preferentially attract reactants to inner Helmholtz plane is highly desirable for kinetic advancement of most electro-catalysis processes, including hydrogen evolution reaction (HER). This, however, has rarely been achieved due to the inherent complexity for pre...

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Bibliographic Details
Published in:Nature communications 2020-02, Vol.11 (1), p.1116-1116, Article 1116
Main Authors: Luo, Zhaoyan, Zhang, Hao, Yang, Yuqi, Wang, Xian, Li, Yang, Jin, Zhao, Jiang, Zheng, Liu, Changpeng, Xing, Wei, Ge, Junjie
Format: Article
Language:English
Subjects:
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Alternative energy sources
Bonding strength
Catalysis
Catalysts
Electrodes
Engineering
Evolution
Fossil fuels
Fourier transforms
Humanities and Social Sciences
Hydrogen
Hydrogen bonding
Hydrogen evolution reactions
Hydronium ions
Laboratories
Microscopy
Molybdenum disulfide
multidisciplinary
Reaction kinetics
Science
Science (multidisciplinary)
Substitution reactions
Sulfur
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Summary:Engineering the reaction interface to preferentially attract reactants to inner Helmholtz plane is highly desirable for kinetic advancement of most electro-catalysis processes, including hydrogen evolution reaction (HER). This, however, has rarely been achieved due to the inherent complexity for precise surface manipulation down to molecule level. Here, we build a MoS 2 di-anionic surface with controlled molecular substitution of S sites by –OH. We confirm the –OH group endows the interface with reactant dragging functionality, through forming strong non-covalent hydrogen bonding to the reactants (hydronium ions or water). The well-conditioned surface, in conjunction with activated sulfur atoms (by heteroatom metal doping) as active sites, giving rise to up-to-date the lowest over potential and highest intrinsic activity among all the MoS 2 based catalysts. The di-anion surface created in this study, with atomic mixing of active sites and reactant dragging functionalities, represents a effective di-functional interface for boosted kinetic performance. H 2 energy as an alternative to fossil fuels requires cost-effective catalysts with fast kinetics for splitting water. Here, authors design MoS 2 materials with di-anionic surfaces to improve the electrocatalytic H 2 evolution activities.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-020-14980-z