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Hierarchical Ni 2 P@NiFe LDH Heterostructural Nanosheet Arrays for Highly Efficient Oxygen Evolution Reaction
Author(s) -
Jin Xin,
Li Jing,
Xu Tingting,
Cui Yuting,
Usoltseva Natalia,
An Vladimir,
Zhang Xinglai,
Liu Baodan
Publication year - 2021
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202100458
Subject(s) - tafel equation , overpotential , oxygen evolution , nanosheet , chemistry , chemical engineering , hydroxide , electrochemistry , catalysis , water splitting , nickel , substrate (aquarium) , nanotechnology , electrode , inorganic chemistry , materials science , organic chemistry , engineering , geology , photocatalysis , oceanography
Developing efficient and low‐cost electrocatalysts toward oxygen evolution reaction (OER) has been one of the key research topics for overall water splitting due to the increasing demand for regenerated and clean energy. Herein, we report Ni 2 P@NiFe LDH hierarchical heterostructures in‐situ grown on nickel foam with good conductivity, strong substrate adhesion, special interface engineering and synergistic effects, which enables superior OER performance with a low overpotential of 204 mV at 10 mA cm −2 and a small Tafel slope of 33 mV dec −1 in 1 M KOH solution. This peculiar hierarchical hybrid electrode also possesses excellent electrochemical stability and long‐term durability at the current density of 50 mA cm −2 in an alkaline medium. More importantly, the proposed synthetic strategy of hierarchical heterostructures in this work will provide a general path to the preparation of various metal hydroxide catalysts for highly efficient OER.