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Facile Preparation of a Porous Nanosheet P X ‐Doped Fe Bi‐Functional Catalyst with Excellent OER and HER Electrocatalytic Activity
Author(s) -
Ju Yan,
Feng Suyang,
Wang Xuanbing,
Li Min,
Wang Li,
Xu Ruidong,
Wang Junli
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202100789
Subject(s) - phosphide , nanosheet , oxygen evolution , catalysis , materials science , bifunctional , water splitting , hydrogen production , chemical engineering , electrolysis , electrocatalyst , electrolysis of water , inorganic chemistry , metal , nanotechnology , chemistry , electrolyte , electrochemistry , metallurgy , electrode , biochemistry , engineering , photocatalysis
The principal factor restricting large‐scale hydrogen production via water electrolysis is the development of inexpensive and efficient catalysts that attain high current densities to produces hydrogen at low potentials. In this study, a series of iron‐based phosphide catalysts (denoted as: P X ‐doped Fe/NF) were prepared via one‐step electrodeposition from a eutectic solvent to examine their oxygen evolution reaction (OER) or hydrogen evolution reaction (HER) performance. Notably, P 30 ‐doped Fe/NF forms a porous interconnected nanosheet structure, providing a large active surface areas, abundant active sites and low charge transfer resistance. P 30 ‐doped Fe/NF attained the lowest OER (284.15 mV) and HER (158.17 mV) overpotentials at 10 mA cm −2 in 1.0 M KOH of all the tested catalysts. When used in overall water splitting, the catalyst displayed outstanding adaptability to a range of potentials and current densities. This study provides a facile route for the synthesis of bifunctional transition‐metal phosphide catalysts for the electrolysis of water.