Open AccessHighly Efficient Oxygen Evolution Reaction Enabled by Phosphorus Doping of the Fe Electronic Structure in Iron–Nickel Selenide Nanosheets
Author(s) -
Huang Yuan,
Jiang LiWen,
Shi BuYan,
Ryan Kevin M.,
Wang JianJun
Publication year - 2021
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.202101775
Subject(s) - overpotential , oxygen evolution , selenide , electrochemistry , catalysis , nickel , materials science , chemical engineering , phosphorus , oxygen , inorganic chemistry , electrode , chemistry , metallurgy , selenium , biochemistry , organic chemistry , engineering
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 Se 2 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 Se 2 which is much higher than that of Ni 0.75 Fe 0.25 Se 2 and RuO 2 . This work presents a new strategy for the rational design of efficient electrocatalysts for OER.