Article
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Preserved in Portico This version is not peer-reviewed
MOF-Derived CoSe2@NiFeOOH Porous Arrays for Efficient Oxygen Evolution Reaction
Version 1
: Received: 29 August 2023 / Approved: 30 August 2023 / Online: 31 August 2023 (10:42:35 CEST)
A peer-reviewed article of this Preprint also exists.
Tang, Y.; Li, J.; Lu, Z.; Wang, Y.; Tao, K.; Lin, Y. MOF-Derived CoSe2@NiFeOOH Arrays for Efficient Oxygen Evolution Reaction. Nanomaterials 2023, 13, 2621. Tang, Y.; Li, J.; Lu, Z.; Wang, Y.; Tao, K.; Lin, Y. MOF-Derived CoSe2@NiFeOOH Arrays for Efficient Oxygen Evolution Reaction. Nanomaterials 2023, 13, 2621.
Abstract
Water electrolysis is a compelling technology for the production of environmentally-friendly hydrogen, minimizing carbon emissions. The electrolysis process of water heavily relies on the effective and steady oxygen evolution reaction (OER) taking place at the anode. Herein, we in-troduce a highly promising catalyst for OER called CoSe2@NiFeOOH arrays, which are supported on a nickel foam. This catalyst, referred to as CoSe2@NiFeOOH/NF, is fabricated through a two-step process involving the selenidation of a Co-based porous metal organic framework and subsequent electrochemical deposition on a nickel foam. The CoSe2@NiFeOOH/NF catalyst demonstrates outstanding activity for the OER in an alkaline electrolyte. It exhibits a low over-potential (η) of 254 mV at 100 mA cm−2, a small Tafel slope of 73 mV dec−1, and excellent high stability. The high performance of CoSe2@NiFeOOH/NF can be attributed to the combination of the high conductivity of the inner layer and the synergistic effect between CoSe2 and NiFeOOH. This study offers an effective method for the fabrication of highly efficient catalysts for the OER.
Keywords
Oygen evolution reaction; NiFeOOH; Water electrolysis; Selenidation; CoSe2
Subject
Chemistry and Materials Science, Electrochemistry
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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