Unveiling anion induced surface reconstruction of perovskite oxide for efficient water oxidation
Perovskite oxides are a promising family of oxygen evolution reaction (OER) electrocatalysts. However, rational design of surface reconstruction on perovskite oxides to achieve high intrinsic activity is still a daunting challenge. Here, we demonstrate a facile anion defect approach to activate the...
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sg-ntu-dr.10356-1728772023-12-27T06:38:07Z Unveiling anion induced surface reconstruction of perovskite oxide for efficient water oxidation Zhang, Jing Ye, Yu Wei, Bo Hu, Feng Sui, Longtao Xiao, Huangwei Gui, Liangqi Sun, Jian He, Beibei Zhao, Ling School of Physical and Mathematical Sciences Science::Chemistry Perovskite Oxide Dynamic Surface Reconstruction Perovskite oxides are a promising family of oxygen evolution reaction (OER) electrocatalysts. However, rational design of surface reconstruction on perovskite oxides to achieve high intrinsic activity is still a daunting challenge. Here, we demonstrate a facile anion defect approach to activate the surface reconstruction of perovskite oxide for OER. Experimental and theoretical investigations reveal that fluorine incorporation into LaNi0.75Fe0.25O3 (LNFO) perovskite with low vacancy formation energy facilitates surface transformation kinetics, creating electrochemically active oxyhydroxide layer. The reconstruction induced oxyhydroxide-perovskite heterostructure, in turn, enables a reduced energy barrier of OER relative to the pristine perovskite. As a demo, the optimized fluorine incorporated LNFO electrocatalyst exhibits an excellent OER performance with a low overpotential of 292 mV at 10 mA cm-2, significantly superior to the pristine LNFO and the benchmark IrO2 electrocatalysts. This finding offers new insights into activating surface reconstruction on perovskite oxide by engineering anion defect for water oxidation. We are grateful for financial support from National Natural Science Foundation of China (No. 22075256 & No. 21975229), Zhejiang Provincial Natural Science Foundation of China (No. LY23E020004 & No. LY23B030004), and Shenzhen Science and Technology Program (No. JCYJ20220530162403008). 2023-12-27T06:38:07Z 2023-12-27T06:38:07Z 2023 Journal Article Zhang, J., Ye, Y., Wei, B., Hu, F., Sui, L., Xiao, H., Gui, L., Sun, J., He, B. & Zhao, L. (2023). Unveiling anion induced surface reconstruction of perovskite oxide for efficient water oxidation. Applied Catalysis B: Environmental, 330, 122661-. https://dx.doi.org/10.1016/j.apcatb.2023.122661 0926-3373 https://hdl.handle.net/10356/172877 10.1016/j.apcatb.2023.122661 2-s2.0-85150389551 330 122661 en Applied Catalysis B: Environmental © 2023 Elsevier B.V. All rights reserved. |
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Science::Chemistry Perovskite Oxide Dynamic Surface Reconstruction Zhang, Jing Ye, Yu Wei, Bo Hu, Feng Sui, Longtao Xiao, Huangwei Gui, Liangqi Sun, Jian He, Beibei Zhao, Ling Unveiling anion induced surface reconstruction of perovskite oxide for efficient water oxidation |
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Perovskite oxides are a promising family of oxygen evolution reaction (OER) electrocatalysts. However, rational design of surface reconstruction on perovskite oxides to achieve high intrinsic activity is still a daunting challenge. Here, we demonstrate a facile anion defect approach to activate the surface reconstruction of perovskite oxide for OER. Experimental and theoretical investigations reveal that fluorine incorporation into LaNi0.75Fe0.25O3 (LNFO) perovskite with low vacancy formation energy facilitates surface transformation kinetics, creating electrochemically active oxyhydroxide layer. The reconstruction induced oxyhydroxide-perovskite heterostructure, in turn, enables a reduced energy barrier of OER relative to the pristine perovskite. As a demo, the optimized fluorine incorporated LNFO electrocatalyst exhibits an excellent OER performance with a low overpotential of 292 mV at 10 mA cm-2, significantly superior to the pristine LNFO and the benchmark IrO2 electrocatalysts. This finding offers new insights into activating surface reconstruction on perovskite oxide by engineering anion defect for water oxidation. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Zhang, Jing Ye, Yu Wei, Bo Hu, Feng Sui, Longtao Xiao, Huangwei Gui, Liangqi Sun, Jian He, Beibei Zhao, Ling |
format |
Article |
author |
Zhang, Jing Ye, Yu Wei, Bo Hu, Feng Sui, Longtao Xiao, Huangwei Gui, Liangqi Sun, Jian He, Beibei Zhao, Ling |
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Zhang, Jing |
title |
Unveiling anion induced surface reconstruction of perovskite oxide for efficient water oxidation |
title_short |
Unveiling anion induced surface reconstruction of perovskite oxide for efficient water oxidation |
title_full |
Unveiling anion induced surface reconstruction of perovskite oxide for efficient water oxidation |
title_fullStr |
Unveiling anion induced surface reconstruction of perovskite oxide for efficient water oxidation |
title_full_unstemmed |
Unveiling anion induced surface reconstruction of perovskite oxide for efficient water oxidation |
title_sort |
unveiling anion induced surface reconstruction of perovskite oxide for efficient water oxidation |
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2023 |
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https://hdl.handle.net/10356/172877 |
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1787136627782451200 |