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Reevesite with Ordered Intralayer Atomic Arrangement as an Optimized Nickel‐Iron Oxygen Evolution Electrocatalyst
Author(s) -
Chen Shan,
Jiang Shuaihu,
Rao Yuan,
Dong Yi,
Bu Junfei,
Yue Qin
Publication year - 2021
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202100030
Subject(s) - overpotential , oxygen evolution , electrocatalyst , water splitting , nickel , materials science , catalysis , hydroxide , non blocking i/o , chemical engineering , nanostructure , nanotechnology , inorganic chemistry , chemistry , metallurgy , electrochemistry , electrode , biochemistry , photocatalysis , engineering
Green hydrogen production through electrocatalytic water splitting relies on inexpensive and highly efficient electrocatalysts. Ni−Fe layered double hydroxide (LDH) is considered as one of the most promising non‐precious metal electrocatalysts for the oxygen evolution reaction (OER). Previous research identified the Fe octahedral site surrounded by [NiO 6 ] octahedrons as a highly active and stable site for OER; however, an optimized electrocatalyst material in such a structure is still missing. Herein, reevesite hierarchical nanostructure supported on Ni foam (Reevesite/NF) is constructed to enable the optimal structure toward the OER. Such Reevesite/NF electrocatalysts with a unique ordered intralayer structure are capable of achieving a high current density (300 mA cm −2 ) at a low overpotential of only 283 mV, while the durability of the Reevesite/NF is equally outstanding, offering a promising non‐precious metal OER catalyst toward high‐efficiency water splitting.