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Issue 49, 2018
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Ir4+-Doped NiFe LDH to expedite hydrogen evolution kinetics as a Pt-like electrocatalyst for water splitting

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Abstract

NiFe-layered double hydroxide (NiFe LDH) is a state-of-the-art oxygen evolution reaction (OER) electrocatalyst, yet it suffers from rather poor catalytic activity for the hydrogen evolution reaction (HER) due to its extremely sluggish water dissociation kinetics, severely restricting its application in overall water splitting. Herein, we report a novel strategy to expedite the HER kinetics of NiFe LDH by an Ir4+-doping strategy to accelerate the water dissociation process (Volmer step), and thus this catalyst exhibits superior and robust catalytic activity for finally oriented overall water splitting in 1 M KOH requiring only a low initial voltage of 1.41 V delivering at 20 mA cm−2 for more than 50 h.

Graphical abstract: Ir4+-Doped NiFe LDH to expedite hydrogen evolution kinetics as a Pt-like electrocatalyst for water splitting

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Publication details

The article was received on 11 Apr 2018, accepted on 25 May 2018 and first published on 06 Jun 2018


Article type: Communication
DOI: 10.1039/C8CC02872A
Citation: Chem. Commun., 2018,54, 6400-6403
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    Ir4+-Doped NiFe LDH to expedite hydrogen evolution kinetics as a Pt-like electrocatalyst for water splitting

    Q. Chen, C. Hou, C. Wang, X. Yang, R. Shi and Y. Chen, Chem. Commun., 2018, 54, 6400
    DOI: 10.1039/C8CC02872A

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