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Highly Efficient Oxygen Evolution Reaction Enabled by Phosphorus Doping of the Fe Electronic Structure in Iron-Nickel Selenide Nanosheets.

ABSTRACT: The electronic structure of active sites is critically important for electrochemical reactions. Here, the authors report a facile approach to independently regulate the electronic structure of Fe in Ni_0.75 Fe_0.25 Se₂ by P doping. The resulting electrode exhibits superior catalytic performance for the oxygen evolution reaction (OER) showing a low overpotential (238 mV at 100 mA cm^-2 , 185 mV at 10 mA cm^-2 ) and an impressive durability in an alkaline medium. Additionally, the mass activity of 328.19 A g^-1 and turnover frequency (TOF) of 0.18 s^-1 at an overpotential of 500 mV are obtained for P─Ni_0.75 Fe_0.25 Se₂ which is much higher than that of Ni_0.75 Fe_0.25 Se₂ and RuO₂ . This work presents a new strategy for the rational design of efficient electrocatalysts for OER.

SUBMITTER: Huang Y

PROVIDER: S-EPMC8456200 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature

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Highly Efficient Oxygen Evolution Reaction Enabled by Phosphorus Doping of the Fe Electronic Structure in Iron-Nickel Selenide Nanosheets.

Huang Yuan Y Huang Yuan Y Jiang Li-Wen LW Shi Bu-Yan BY Ryan Kevin M KM Wang Jian-Jun JJ

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20210724 18

The electronic structure of active sites is critically important for electrochemical reactions. Here, the authors report a facile approach to independently regulate the electronic structure of Fe in Ni0.75 Fe0.25 Se2 by P doping. The resulting electrode exhibits superior catalytic performance for the oxygen evolution reaction (OER) showing a low overpotential (238 mV at 100 mA cm-2 , 185 mV at 10 mA cm-2 ) and an impressive durability in an ...[more]

PMID: 34302445

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