首页|Fe-Ni-F electrocatalyst for enhancing reaction kinetics of water oxidation

Fe-Ni-F electrocatalyst for enhancing reaction kinetics of water oxidation

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Highly active and low-cost oxygen evolution reaction(OER)catalytic electrodes are extremely essential for exploration of green hydrogen via water splitting.Herein,an advanced Fe-Ni-F electrocatalyst is fabricated by a facile annealing strategy using ammonium fluoride,of which the structure feature is unveiled by XRD,FESEM,TEM,EDS,BET,and XPS measurements.The as-prepared Fe-Ni-F addresses a low overpotential of 277 mV and a small Tafel slope of 49 mV dec-1 at a current density of 10 mA cm-2,significantly outperforming other control samples as well as the state-of-the-art RuO2.The advanced nature of our Fe-Ni-F catalyst could also be further evidenced from the robust stability in KOH alkaline solution,showing as 5.41％degradation after 24 h continuous working.Upon analysis,it suggests that the decent catalytic activity should be attributed to the formed bimetallic(oxy)hydroxides because of the introduction of fluoride and the synergistic effect of iron and nickel towards oxygen generation.This work represents the potential of Fe-and/or Ni-based fluoride as efficient catalyst for low-energy consumption oxygen generation.

FluorideOxygen evolution reactionFe-Ni-FReaction kinetics

Yi Zhang、Biao Wang、Chao Hu、Muhammad Humayun、Yaping Huang、Yulin Cao、Mosaad Negem、Yigang Ding、Chundong Wang

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School of Chemical Engineering and Pharmacy,Key Laboratory of Green Chemical Process of Ministry of Education,Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province,Wuhan Institute of Technology,Wuhan,430073,PR China

Energy,Water,and Environment Lab,College of Humanities and Sciences,Prince Sultan University,Riyadh,11586,Saudi Arabia

School of Integrated Circuits,Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan,430074,PR China

Physics Laboratory,Industrial Training Center,Shenzhen Polytechnic University,Shenzhen,518055,PR China

Chemistry Department,Faculty of Science,Fayoum University,Fayoum,63514,Egypt

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国家自然科学基金国家自然科学基金Innovation Foundation of Key Laboratory of Green Chemical Process of Ministry of EducationBintuan Science and Technology ProgramBintuan Science and Technology ProgramShenzhen Science and Technology Innovation CommitteePrince Sultan University

5180422352272202GCX2021132020DB0022022DB009JCYJ20200109141412308

2024

10.1016/j.cjsc.2024.100243

结构化学
中国化学会 中国科学院福建物质结构研究所

结构化学

影响因子：0.44
ISSN：0254-5861
年,卷(期)：2024.43(2)
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