Coordination Tailoring of Epitaxial Perovskite-Derived Iron Oxide Films for Efficient Water Oxidation Electrocatalysis
Cost-effective perovskite oxides have recently offered intriguing promise for electrochemical energy storage and conversion systems. Despite the breadth of previously studied electronic structures and properties, the sluggish kinetics of the oxygen evolution reaction (OER) of perovskite oxides basically restrict their applications in metal-air batteries and electrolytic cells. In this work, we report on a highly efficient OER activity of perovskite-derived SrFeO (0.0 ≤ δ ≤ 1.0) single-crystal films by selectively tuning the Fe-O coordination structure and film orientation. Our findings show that the facile anionic oxygen-induced topotactic brownmillerite phase of the SrFeO film possesses superior electrocatalytic performance with a small overpotential and Tafel slope, which is mainly attributed to the peculiar Fe-O coordination framework along with ordered oxygen vacancy channels. Moreover, the low adsorption free energy and small charge transfer resistance could further boost the electrocatalytic OER performance of the (111)-oriented BM-SrFeO films. This delicate tailoring of the epitaxial SrFeO films enables the tunable catalytic reaction pathways and concomitantly efficient OER kinetics, which has significant implications for the rational design of cost-effective and high-performance perovskite-based electrocatalysts.
Guangdong Basic and Applied Basic Research Foundation[2019A1515011529] ; National Natural Science Foundation of China ; Science and Technology Research Items of Shenzhen[JCYJ20180504165650580] ; Natural Science Foundation of Guangdong Province[2022A1515010211]
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|Document Type||Journal Article|
|Department||Department of Physics|
1.Shenzhen Key Laboratory of Special Functional Materials,College of Materials Science and Engineering,Shenzhen University,Shenzhen,518060,China
2.Anhui Laboratory of Advanced Photon Science and Technology,Hefei National Laboratory for Physical Sciences at the Microscale,University of Science and Technology of China,Hefei,Anhui,230026,China
3.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
4.Beijing Advanced Innovation Center for Intelligent Robots and Systems,Institute of Convergence in Medicine and Engineering,Beijing Institute of Technology,Beijing,100081,China
5.Institute of Advanced Wear & Corrosion Resistant and Functional Materials,Jinan University,Guangzhou,510632,China
6.Department of Chemistry and Chemical Biology,Department of Chemical and Biochemical Engineering,Rutgers,The State University of New Jersey,Piscataway,610 Taylor Road,08854,United States
Weng，Zhuanglin,Huang，Haoliang,Li，Xiaowen,et al. Coordination Tailoring of Epitaxial Perovskite-Derived Iron Oxide Films for Efficient Water Oxidation Electrocatalysis[J]. ACS Catalysis,2023,13(4):2751-2760.
Weng，Zhuanglin.,Huang，Haoliang.,Li，Xiaowen.,Zhang，Yihao.,Shao，Ruiwen.,...&Huang，Chuanwei.(2023).Coordination Tailoring of Epitaxial Perovskite-Derived Iron Oxide Films for Efficient Water Oxidation Electrocatalysis.ACS Catalysis,13(4),2751-2760.
Weng，Zhuanglin,et al."Coordination Tailoring of Epitaxial Perovskite-Derived Iron Oxide Films for Efficient Water Oxidation Electrocatalysis".ACS Catalysis 13.4(2023):2751-2760.
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