Deep eutectic solvent-induced synthesis of Ni–Fe catalyst with excellent mass activity and stability for water oxidation
Ni–Fe bimetallic electrodes are currently recognized as a kind of benchmark transition metal-based oxygen evolution reaction (OER) electrocatalysts. Facile synthesis of Ni–Fe bimetallic electrode materials with excellent catalytic activity and satisfied stability by a simple and low-cost route is st...
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| Format: | Article |
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KeAi Communications Co., Ltd.
2023-06-01
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| Series: | Green Energy & Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468025721001850 |
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| author | Ruichang Xue Mengwei Guo Zhuoming Wei Qibo Zhang |
| author_facet | Ruichang Xue Mengwei Guo Zhuoming Wei Qibo Zhang |
| author_sort | Ruichang Xue |
| collection | DOAJ |
| description | Ni–Fe bimetallic electrodes are currently recognized as a kind of benchmark transition metal-based oxygen evolution reaction (OER) electrocatalysts. Facile synthesis of Ni–Fe bimetallic electrode materials with excellent catalytic activity and satisfied stability by a simple and low-cost route is still a big challenge. Herein, well-defined Ni–Fe nanoparticles in-situ developed on a planar Fe substrate (Ni–Fe NPs/Fe) is fabricated via a facile one-step galvanic replacement reaction (GRR) carried out in an Ethaline-based deep eutectic solvent (DES). The prepared Ni–Fe NPs/Fe exhibits outstanding OER performance, which needs an overpotential of only 319 mV to drive a current density of 10 mA cm−2, with a small Tafel slope of 41.2 mV dec−1 in 1.0 mol L−1 KOH, high mass activity (up to 319.78 A g−1 at an overpotential of 300 mV) and robust durability for 200 h. Impressively, the Ni–Fe bimetallic oxygen-evolution electrode obtained from the Ethaline-based DES is catalytically more active and durable than that of its counterpart derived from the 4.2 mol L−1 NaCl aqueous solution. The reason for this is mainly related to the different morphology and surface state of the Ni–Fe catalysts obtained from these different solvent environments, particularly for the differences in phy–chemical properties, active species formed and deposition kinetics, offered by the Ethaline-based DES. |
| first_indexed | 2024-03-13T10:40:08Z |
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| id | doaj.art-7d60557f51194c3fa9bdd0509c74cb9f |
| institution | Directory Open Access Journal |
| issn | 2468-0257 |
| language | English |
| last_indexed | 2024-03-13T10:40:08Z |
| publishDate | 2023-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Green Energy & Environment |
| spelling | doaj.art-7d60557f51194c3fa9bdd0509c74cb9f2023-05-18T04:40:00ZengKeAi Communications Co., Ltd.Green Energy & Environment2468-02572023-06-0183852863Deep eutectic solvent-induced synthesis of Ni–Fe catalyst with excellent mass activity and stability for water oxidationRuichang Xue0Mengwei Guo1Zhuoming Wei2Qibo Zhang3Key Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaKey Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaKey Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaKey Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China; State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province, Kunming, 650093, China; Corresponding author. Key Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, No.68 Wenchang Road, 121 Street, Kunming, 650093, China.Ni–Fe bimetallic electrodes are currently recognized as a kind of benchmark transition metal-based oxygen evolution reaction (OER) electrocatalysts. Facile synthesis of Ni–Fe bimetallic electrode materials with excellent catalytic activity and satisfied stability by a simple and low-cost route is still a big challenge. Herein, well-defined Ni–Fe nanoparticles in-situ developed on a planar Fe substrate (Ni–Fe NPs/Fe) is fabricated via a facile one-step galvanic replacement reaction (GRR) carried out in an Ethaline-based deep eutectic solvent (DES). The prepared Ni–Fe NPs/Fe exhibits outstanding OER performance, which needs an overpotential of only 319 mV to drive a current density of 10 mA cm−2, with a small Tafel slope of 41.2 mV dec−1 in 1.0 mol L−1 KOH, high mass activity (up to 319.78 A g−1 at an overpotential of 300 mV) and robust durability for 200 h. Impressively, the Ni–Fe bimetallic oxygen-evolution electrode obtained from the Ethaline-based DES is catalytically more active and durable than that of its counterpart derived from the 4.2 mol L−1 NaCl aqueous solution. The reason for this is mainly related to the different morphology and surface state of the Ni–Fe catalysts obtained from these different solvent environments, particularly for the differences in phy–chemical properties, active species formed and deposition kinetics, offered by the Ethaline-based DES.http://www.sciencedirect.com/science/article/pii/S2468025721001850Ni–Fe catalystsGalvanic replacement reactionDeep eutectic solventOxygen evolution reaction |
| spellingShingle | Ruichang Xue Mengwei Guo Zhuoming Wei Qibo Zhang Deep eutectic solvent-induced synthesis of Ni–Fe catalyst with excellent mass activity and stability for water oxidation Green Energy & Environment Ni–Fe catalysts Galvanic replacement reaction Deep eutectic solvent Oxygen evolution reaction |
| title | Deep eutectic solvent-induced synthesis of Ni–Fe catalyst with excellent mass activity and stability for water oxidation |
| title_full | Deep eutectic solvent-induced synthesis of Ni–Fe catalyst with excellent mass activity and stability for water oxidation |
| title_fullStr | Deep eutectic solvent-induced synthesis of Ni–Fe catalyst with excellent mass activity and stability for water oxidation |
| title_full_unstemmed | Deep eutectic solvent-induced synthesis of Ni–Fe catalyst with excellent mass activity and stability for water oxidation |
| title_short | Deep eutectic solvent-induced synthesis of Ni–Fe catalyst with excellent mass activity and stability for water oxidation |
| title_sort | deep eutectic solvent induced synthesis of ni fe catalyst with excellent mass activity and stability for water oxidation |
| topic | Ni–Fe catalysts Galvanic replacement reaction Deep eutectic solvent Oxygen evolution reaction |
| url | http://www.sciencedirect.com/science/article/pii/S2468025721001850 |
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