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Issue 15, 2018
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Metal organic framework-derived CoPS/N-doped carbon for efficient electrocatalytic hydrogen evolution

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Abstract

Electrocatalytic hydrogen evolution has attracted a great deal of attention due to the urgent need for clean energy. Herein, we demonstrate the synthesis of ternary pyrite-type cobalt phosphosulphide (CoPS) nanoparticles supported on a nitrogen-doped carbon matrix, CoPS/N–C, through carbonization and subsequent phosphosulfurization of Co-based zeolitic imidazolate frameworks (ZIF-67), as promising hydrogen evolution reaction (HER) electrocatalysts in both acidic and alkaline solutions. The polyhedral structure of ZIF-67 can be well maintained in the as-prepared CoPS/N–C nanocomposites. In particular, CoPS/N–C provides a geometric catalytic current density of −10 mA cm−2 at overpotentials of −80 and −148 mV vs. a reversible hydrogen electrode (RHE) and a Tafel slope of 68 and 78 mV dec−1 in 0.5 M H2SO4 and 1 M KOH, respectively, which is superior to most of the transition metal phosphosulfide materials. This MOF-derived synthesis of a transition metal phosphosulfide supported heteroatom-doped carbon matrix provides a promising opportunity for the development of highly efficient electrocatalysts for renewable energy devices.

Graphical abstract: Metal organic framework-derived CoPS/N-doped carbon for efficient electrocatalytic hydrogen evolution

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Publication details

The article was received on 03 Mar 2018, accepted on 16 Mar 2018 and first published on 17 Mar 2018


Article type: Paper
DOI: 10.1039/C8NR01811A
Citation: Nanoscale, 2018,10, 7291-7297
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    Metal organic framework-derived CoPS/N-doped carbon for efficient electrocatalytic hydrogen evolution

    Y. Li, S. Niu, D. Rakov, Y. Wang, M. Cabán-Acevedo, S. Zheng, B. Song and P. Xu, Nanoscale, 2018, 10, 7291
    DOI: 10.1039/C8NR01811A

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