Electroshock synthesis of a bifunctional nonprecious multi‐element alloy for alkaline hydrogen oxidation and evolution
Abstract The design and production of active, durable, and nonprecious electrocatalysts toward alkaline hydrogen oxidation and evolution reactions (HOR/HER) are extremely appealing for the implementation of hydrogen economy, but remain challenging. Here, we report a facile electric shock synthesis o...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-12-01
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| Series: | Exploration |
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| Online Access: | https://doi.org/10.1002/EXP.20220024 |
| _version_ | 1797980421375393792 |
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| author | Lijie Du Hu Xiong Hongcheng Lu Li‐Ming Yang Rong‐Zhen Liao Bao Yu Xia Bo You |
| author_facet | Lijie Du Hu Xiong Hongcheng Lu Li‐Ming Yang Rong‐Zhen Liao Bao Yu Xia Bo You |
| author_sort | Lijie Du |
| collection | DOAJ |
| description | Abstract The design and production of active, durable, and nonprecious electrocatalysts toward alkaline hydrogen oxidation and evolution reactions (HOR/HER) are extremely appealing for the implementation of hydrogen economy, but remain challenging. Here, we report a facile electric shock synthesis of an efficient, stable, and inexpensive NiCoCuMoW multi‐element alloy on Ni foam (NiCoCuMoW) as a bifunctional electrocatalyst for both HOR and HER. For the HOR, the current density of NiCoCuMoW could reach ∼11.2 mA cm–2 when the overpotential is 100 mV, higher than that for commercial Pt/C (∼7.2 mA cm–2) and control alloy samples with less elements, along with superior CO tolerance. Moreover, for the HER, the overpotential at 10 mA cm−2 for NiCoCuMoW is only 21 mV, along with a Tafel slope of low to 63.7 mV dec−1, rivaling the commercial Pt/C as well (35 mV and 109.7 mV dec−1). Density functional theory calculations indicate that alloying Ni, Co, Cu, Mo, and W can tune the electronic structure of individual metals and provide multiple active sites to optimize the hydrogen and hydroxyl intermediates adsorption, collaboratively resulting in enhanced electrocatalytic activity. |
| first_indexed | 2024-04-11T05:54:08Z |
| format | Article |
| id | doaj.art-45fd86b3f08444449838de0bbd9adfa6 |
| institution | Directory Open Access Journal |
| issn | 2766-8509 2766-2098 |
| language | English |
| last_indexed | 2024-04-11T05:54:08Z |
| publishDate | 2022-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Exploration |
| spelling | doaj.art-45fd86b3f08444449838de0bbd9adfa62022-12-22T04:41:57ZengWileyExploration2766-85092766-20982022-12-0126n/an/a10.1002/EXP.20220024Electroshock synthesis of a bifunctional nonprecious multi‐element alloy for alkaline hydrogen oxidation and evolutionLijie Du0Hu Xiong1Hongcheng Lu2Li‐Ming Yang3Rong‐Zhen Liao4Bao Yu Xia5Bo You6Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) Wuhan Hubei ChinaKey Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) Wuhan Hubei ChinaKey Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) Wuhan Hubei ChinaKey Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) Wuhan Hubei ChinaKey Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) Wuhan Hubei ChinaKey Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) Wuhan Hubei ChinaKey Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) Wuhan Hubei ChinaAbstract The design and production of active, durable, and nonprecious electrocatalysts toward alkaline hydrogen oxidation and evolution reactions (HOR/HER) are extremely appealing for the implementation of hydrogen economy, but remain challenging. Here, we report a facile electric shock synthesis of an efficient, stable, and inexpensive NiCoCuMoW multi‐element alloy on Ni foam (NiCoCuMoW) as a bifunctional electrocatalyst for both HOR and HER. For the HOR, the current density of NiCoCuMoW could reach ∼11.2 mA cm–2 when the overpotential is 100 mV, higher than that for commercial Pt/C (∼7.2 mA cm–2) and control alloy samples with less elements, along with superior CO tolerance. Moreover, for the HER, the overpotential at 10 mA cm−2 for NiCoCuMoW is only 21 mV, along with a Tafel slope of low to 63.7 mV dec−1, rivaling the commercial Pt/C as well (35 mV and 109.7 mV dec−1). Density functional theory calculations indicate that alloying Ni, Co, Cu, Mo, and W can tune the electronic structure of individual metals and provide multiple active sites to optimize the hydrogen and hydroxyl intermediates adsorption, collaboratively resulting in enhanced electrocatalytic activity.https://doi.org/10.1002/EXP.20220024electrocatalysiselectroshockH2 evolutionH2 oxidationmulti‐element alloy |
| spellingShingle | Lijie Du Hu Xiong Hongcheng Lu Li‐Ming Yang Rong‐Zhen Liao Bao Yu Xia Bo You Electroshock synthesis of a bifunctional nonprecious multi‐element alloy for alkaline hydrogen oxidation and evolution Exploration electrocatalysis electroshock H2 evolution H2 oxidation multi‐element alloy |
| title | Electroshock synthesis of a bifunctional nonprecious multi‐element alloy for alkaline hydrogen oxidation and evolution |
| title_full | Electroshock synthesis of a bifunctional nonprecious multi‐element alloy for alkaline hydrogen oxidation and evolution |
| title_fullStr | Electroshock synthesis of a bifunctional nonprecious multi‐element alloy for alkaline hydrogen oxidation and evolution |
| title_full_unstemmed | Electroshock synthesis of a bifunctional nonprecious multi‐element alloy for alkaline hydrogen oxidation and evolution |
| title_short | Electroshock synthesis of a bifunctional nonprecious multi‐element alloy for alkaline hydrogen oxidation and evolution |
| title_sort | electroshock synthesis of a bifunctional nonprecious multi element alloy for alkaline hydrogen oxidation and evolution |
| topic | electrocatalysis electroshock H2 evolution H2 oxidation multi‐element alloy |
| url | https://doi.org/10.1002/EXP.20220024 |
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