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Highly efficient oxygen evolution reaction enabled by phosphorus doping of the Fe electronic structure in iron–nickel selenide nanosheets
Date
2021
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 Ni0.75Fe0.25Se2 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─Ni0.75Fe0.25Se2 which is much higher than that of Ni0.75Fe0.25Se2 and RuO2. This work presents a new strategy for the rational design of efficient electrocatalysts for OER.
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Description
peer-reviewed
Publisher
John Wiley & Sons, Inc.
Citation
Advanced Science;2101775
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Ryan_2021_Highly.pdf
Adobe PDF, 2.34 MB
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Funding Information
National Natural Science Foundation of China, Shandong Provincial Natural Science Foundation, Science Foundation Ireland (SFI), Irish Research Council (IRC)