Dealloying fabrication of hierarchical porous Nickel–Iron foams for efficient oxygen evolution reaction
Designing and preparing highly active oxygen evolution reaction (OER) electrodes are essential for improving the overall efficiency of water splitting. Increasing the number of active sites is the simplest way to enhance OER performance. Herein, we present a dealloy-etched Ni–Fe foam with a hierarch...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-11-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2022.1047398/full |
| _version_ | 1811331302271483904 |
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| author | Tingting Zhou Zilong Liu Bei Yang Zhen Cao Zaiyong Jiang Weiran Cui Kaili Wang Lei Yu Jitao Lu Ling Zhang |
| author_facet | Tingting Zhou Zilong Liu Bei Yang Zhen Cao Zaiyong Jiang Weiran Cui Kaili Wang Lei Yu Jitao Lu Ling Zhang |
| author_sort | Tingting Zhou |
| collection | DOAJ |
| description | Designing and preparing highly active oxygen evolution reaction (OER) electrodes are essential for improving the overall efficiency of water splitting. Increasing the number of active sites is the simplest way to enhance OER performance. Herein, we present a dealloy-etched Ni–Fe foam with a hierarchical nanoporous structure as integrated electrodes with excellent performance for OER. Using the dealloying method on the Ni–Fe foam framework, a nanoporous structure is produced, which is named nanoporous Ni–Fe@Ni–Fe foam (NP-NF@NFF). Because of the peculiarities of the dealloying method, the NP-NF@NFF produced contains oxygen vacancies and heterojunctions. As a result, NP-NF@NFF electrode outperforms state-of-the-art noble metal catalysts with an extremely low overpotential of 210 and 285 mV at current densities of 10 and 100 mA cm−2, respectively. Additionally, the NP-NF@NFF electrode shows a 60-h stability period. Therefore, NP-NF@NFF provides new insights into the investigation of high-performance transition metal foam electrodes with effective active sites for efficient oxygen evolution at high current densities. |
| first_indexed | 2024-04-13T16:17:34Z |
| format | Article |
| id | doaj.art-d77f2022810f4a3cba00730af356479a |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-04-13T16:17:34Z |
| publishDate | 2022-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-d77f2022810f4a3cba00730af356479a2022-12-22T02:40:01ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462022-11-011010.3389/fchem.2022.10473981047398Dealloying fabrication of hierarchical porous Nickel–Iron foams for efficient oxygen evolution reactionTingting Zhou0Zilong Liu1Bei Yang2Zhen Cao3Zaiyong Jiang4Weiran Cui5Kaili Wang6Lei Yu7Jitao Lu8Ling Zhang9College of Chemical Engineering and Environmental Chemistry, Weifang University, Weifang, ChinaCollege of Chemical Engineering and Environmental Chemistry, Weifang University, Weifang, ChinaCollege of Chemical Engineering and Environmental Chemistry, Weifang University, Weifang, ChinaCollege of Chemical Engineering and Environmental Chemistry, Weifang University, Weifang, ChinaCollege of Chemical Engineering and Environmental Chemistry, Weifang University, Weifang, ChinaCollege of Chemical Engineering and Environmental Chemistry, Weifang University, Weifang, ChinaCollege of Chemical Engineering and Environmental Chemistry, Weifang University, Weifang, ChinaCollege of Chemical Engineering and Environmental Chemistry, Weifang University, Weifang, ChinaCollege of Chemical Engineering and Environmental Chemistry, Weifang University, Weifang, ChinaSchool of Science, Harbin Institute of Technology, Shenzhen, ChinaDesigning and preparing highly active oxygen evolution reaction (OER) electrodes are essential for improving the overall efficiency of water splitting. Increasing the number of active sites is the simplest way to enhance OER performance. Herein, we present a dealloy-etched Ni–Fe foam with a hierarchical nanoporous structure as integrated electrodes with excellent performance for OER. Using the dealloying method on the Ni–Fe foam framework, a nanoporous structure is produced, which is named nanoporous Ni–Fe@Ni–Fe foam (NP-NF@NFF). Because of the peculiarities of the dealloying method, the NP-NF@NFF produced contains oxygen vacancies and heterojunctions. As a result, NP-NF@NFF electrode outperforms state-of-the-art noble metal catalysts with an extremely low overpotential of 210 and 285 mV at current densities of 10 and 100 mA cm−2, respectively. Additionally, the NP-NF@NFF electrode shows a 60-h stability period. Therefore, NP-NF@NFF provides new insights into the investigation of high-performance transition metal foam electrodes with effective active sites for efficient oxygen evolution at high current densities.https://www.frontiersin.org/articles/10.3389/fchem.2022.1047398/fullelectrocataiysisdealloyedhierarchal structurenickel-iron (NiFe)oxygen evolution reduction |
| spellingShingle | Tingting Zhou Zilong Liu Bei Yang Zhen Cao Zaiyong Jiang Weiran Cui Kaili Wang Lei Yu Jitao Lu Ling Zhang Dealloying fabrication of hierarchical porous Nickel–Iron foams for efficient oxygen evolution reaction Frontiers in Chemistry electrocataiysis dealloyed hierarchal structure nickel-iron (NiFe) oxygen evolution reduction |
| title | Dealloying fabrication of hierarchical porous Nickel–Iron foams for efficient oxygen evolution reaction |
| title_full | Dealloying fabrication of hierarchical porous Nickel–Iron foams for efficient oxygen evolution reaction |
| title_fullStr | Dealloying fabrication of hierarchical porous Nickel–Iron foams for efficient oxygen evolution reaction |
| title_full_unstemmed | Dealloying fabrication of hierarchical porous Nickel–Iron foams for efficient oxygen evolution reaction |
| title_short | Dealloying fabrication of hierarchical porous Nickel–Iron foams for efficient oxygen evolution reaction |
| title_sort | dealloying fabrication of hierarchical porous nickel iron foams for efficient oxygen evolution reaction |
| topic | electrocataiysis dealloyed hierarchal structure nickel-iron (NiFe) oxygen evolution reduction |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2022.1047398/full |
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