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Issue 10, 2017
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Graphene-coated hybrid electrocatalysts derived from bimetallic metal–organic frameworks for efficient hydrogen generation

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Abstract

In this study, we synthesized a low-cost electrocatalyst, Ni/Mo2C nanoparticles coated with graphene shells (denoted as NiMo2C@C), via a facile carburization process of porous bimetallic metal–organic frameworks (NiMo-MOF). This is the first example of a Ni and Mo2C nanocomposite derived from a bimetallic MOF that demonstrates excellent electrocatalytic activity and remarkable durability as long as 10 h under acidic and basic conditions. The overpotentials are 169 mV and 181 mV to reach the current density of 10 mA cm−2, respectively. The favorable performance can be ascribed to the synergistic effect between Mo2C and Ni as well as the homogeneous distribution, graphene coating and mesoporous structure which is in favor of the charge transfer in the HER. This work may provide some guidelines for fabricating nanostructured hybrids composed of versatile transition metal carbides and graphene with high performance and stability in different media based on designed MOFs.

Graphical abstract: Graphene-coated hybrid electrocatalysts derived from bimetallic metal–organic frameworks for efficient hydrogen generation

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Supplementary files

Article information


Submitted
04 Dec 2016
Accepted
24 Jan 2017
First published
24 Jan 2017

J. Mater. Chem. A, 2017,5, 5000-5006
Article type
Paper

Graphene-coated hybrid electrocatalysts derived from bimetallic metal–organic frameworks for efficient hydrogen generation

X. Li, L. Yang, T. Su, X. Wang, C. Sun and Z. Su, J. Mater. Chem. A, 2017, 5, 5000 DOI: 10.1039/C6TA10405C

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