Fe-doped and sulfur-enriched Ni3S2 nanowires with enhanced reaction kinetics for boosting water oxidation
Exploring cost-effective and highly-active oxygen evolution reaction (OER) electrocatalysts is a pressing task to propel water electrolysis for green hydrogen production. Herein, we constructed a class of Fe-doped and S-enriched Ni3S2 nanowires electrocatalysts for optimizing the target intermediate...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co. Ltd.
2022-12-01
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| Series: | Green Chemical Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666952821001023 |
| _version_ | 1797976380799975424 |
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| author | Liyue Zhang Qiucheng Xu Rukai Zhao Yanjie Hu Hao Jiang Chunzhong Li |
| author_facet | Liyue Zhang Qiucheng Xu Rukai Zhao Yanjie Hu Hao Jiang Chunzhong Li |
| author_sort | Liyue Zhang |
| collection | DOAJ |
| description | Exploring cost-effective and highly-active oxygen evolution reaction (OER) electrocatalysts is a pressing task to propel water electrolysis for green hydrogen production. Herein, we constructed a class of Fe-doped and S-enriched Ni3S2 nanowires electrocatalysts for optimizing the target intermediates adsorption to decrease the OER overpotentials at various current densities. The optimal Ni3S2-1.4%Fe electrocatalyst possesses the most active sites and exhibits an ultralow overpotential of 190 mV at 10 mA cm−2 with an excellent stability of > 60 h, exceeding the majority of recently-reported Ni3S2-based electrocatalysts. The trivalence Fe-doping not only reduces the electron density of the Ni center, but also enables the sulfur enrichment on the Ni3S2 surface, which greatly improves the intrinsic activity and the number of target intermediates (∗OOH). A novel methanol-assisted electrochemical evaluation further reveals that the Ni3S2-1.4%Fe electrocatalyst demonstrates a weaker binding ability to ∗OH with the rapid generation of ∗OOH species, and thus gives a lower apparent activation energy compared with the surface sulfur reduced ones. This work provides a new perspective for regulating the adsorption of intermediates through doping strategy. |
| first_indexed | 2024-04-11T04:50:01Z |
| format | Article |
| id | doaj.art-74797bfc962b47f8a3c0013ad3616515 |
| institution | Directory Open Access Journal |
| issn | 2666-9528 |
| language | English |
| last_indexed | 2024-04-11T04:50:01Z |
| publishDate | 2022-12-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Green Chemical Engineering |
| spelling | doaj.art-74797bfc962b47f8a3c0013ad36165152022-12-27T04:40:17ZengKeAi Communications Co. Ltd.Green Chemical Engineering2666-95282022-12-0134367373Fe-doped and sulfur-enriched Ni3S2 nanowires with enhanced reaction kinetics for boosting water oxidationLiyue Zhang0Qiucheng Xu1Rukai Zhao2Yanjie Hu3Hao Jiang4Chunzhong Li5Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, ChinaSection for Surface Physics and Catalysis (SurfCat), Department of Physics, Technical University of Denmark, 2800, Kgs. Lyngby, Denmark; Corresponding author.Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, ChinaKey Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, ChinaKey Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China; Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; Corresponding author.Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China; Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, ChinaExploring cost-effective and highly-active oxygen evolution reaction (OER) electrocatalysts is a pressing task to propel water electrolysis for green hydrogen production. Herein, we constructed a class of Fe-doped and S-enriched Ni3S2 nanowires electrocatalysts for optimizing the target intermediates adsorption to decrease the OER overpotentials at various current densities. The optimal Ni3S2-1.4%Fe electrocatalyst possesses the most active sites and exhibits an ultralow overpotential of 190 mV at 10 mA cm−2 with an excellent stability of > 60 h, exceeding the majority of recently-reported Ni3S2-based electrocatalysts. The trivalence Fe-doping not only reduces the electron density of the Ni center, but also enables the sulfur enrichment on the Ni3S2 surface, which greatly improves the intrinsic activity and the number of target intermediates (∗OOH). A novel methanol-assisted electrochemical evaluation further reveals that the Ni3S2-1.4%Fe electrocatalyst demonstrates a weaker binding ability to ∗OH with the rapid generation of ∗OOH species, and thus gives a lower apparent activation energy compared with the surface sulfur reduced ones. This work provides a new perspective for regulating the adsorption of intermediates through doping strategy.http://www.sciencedirect.com/science/article/pii/S2666952821001023Ni3S2ElectrocatalystWater splittingOxygen evolution reaction |
| spellingShingle | Liyue Zhang Qiucheng Xu Rukai Zhao Yanjie Hu Hao Jiang Chunzhong Li Fe-doped and sulfur-enriched Ni3S2 nanowires with enhanced reaction kinetics for boosting water oxidation Green Chemical Engineering Ni3S2 Electrocatalyst Water splitting Oxygen evolution reaction |
| title | Fe-doped and sulfur-enriched Ni3S2 nanowires with enhanced reaction kinetics for boosting water oxidation |
| title_full | Fe-doped and sulfur-enriched Ni3S2 nanowires with enhanced reaction kinetics for boosting water oxidation |
| title_fullStr | Fe-doped and sulfur-enriched Ni3S2 nanowires with enhanced reaction kinetics for boosting water oxidation |
| title_full_unstemmed | Fe-doped and sulfur-enriched Ni3S2 nanowires with enhanced reaction kinetics for boosting water oxidation |
| title_short | Fe-doped and sulfur-enriched Ni3S2 nanowires with enhanced reaction kinetics for boosting water oxidation |
| title_sort | fe doped and sulfur enriched ni3s2 nanowires with enhanced reaction kinetics for boosting water oxidation |
| topic | Ni3S2 Electrocatalyst Water splitting Oxygen evolution reaction |
| url | http://www.sciencedirect.com/science/article/pii/S2666952821001023 |
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