Bimetal Modulation Stabilizing a Metallic Heterostructure for Efficient Overall Water Splitting at Large Current Density
Abstract Large current‐driven alkaline water splitting for large‐scale hydrogen production generally suffers from the sluggish charge transfer kinetics. Commercial noble‐metal catalysts are unstable in large‐current operation, while most non‐noble metal catalysts can only achieve high activity at lo...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-09-01
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| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202202750 |
| _version_ | 1798004422105628672 |
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| author | Tong Wu Shumao Xu Zhuang Zhang Mengjia Luo Ruiqi Wang Yufeng Tang Jiacheng Wang Fuqiang Huang |
| author_facet | Tong Wu Shumao Xu Zhuang Zhang Mengjia Luo Ruiqi Wang Yufeng Tang Jiacheng Wang Fuqiang Huang |
| author_sort | Tong Wu |
| collection | DOAJ |
| description | Abstract Large current‐driven alkaline water splitting for large‐scale hydrogen production generally suffers from the sluggish charge transfer kinetics. Commercial noble‐metal catalysts are unstable in large‐current operation, while most non‐noble metal catalysts can only achieve high activity at low current densities <200 mA cm−2, far lower than industrially‐required current densities (>500 mA cm−2). Herein, a sulfide‐based metallic heterostructure is designed to meet the industrial demand by regulating the electronic structure of phase transition coupling with interfacial defects from Mo and Ni incorporation. The modulation of metallic Mo2S3 and in situ epitaxial growth of bifunctional Ni‐based catalyst to construct metallic heterostructure can facilitate the charge transfer for fast Volmer H and Heyrovsky H2 generation. The Mo2S3@NiMo3S4 electrolyzer requires an ultralow voltage of 1.672 V at a large current density of 1000 mA cm−2, with ≈100% retention over 100 h, outperforming the commercial RuO2||Pt/C, owing to the synergistic effect of the phase and interface electronic modulation. This work sheds light on the design of metallic heterostructure with an optimized interfacial electronic structure and abundant active sites for industrial water splitting. |
| first_indexed | 2024-04-11T12:23:25Z |
| format | Article |
| id | doaj.art-344f83aab98645739ff397a57c1d930e |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-04-11T12:23:25Z |
| publishDate | 2022-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-344f83aab98645739ff397a57c1d930e2022-12-22T04:24:02ZengWileyAdvanced Science2198-38442022-09-01925n/an/a10.1002/advs.202202750Bimetal Modulation Stabilizing a Metallic Heterostructure for Efficient Overall Water Splitting at Large Current DensityTong Wu0Shumao Xu1Zhuang Zhang2Mengjia Luo3Ruiqi Wang4Yufeng Tang5Jiacheng Wang6Fuqiang Huang7State Key Lab of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Lab of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Lab of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Lab of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Laboratory of Rare Earth Materials Chemistry and Applications College of Chemistry and Molecular Engineering Peking University Beijing 100871 ChinaState Key Lab of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Lab of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Lab of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaAbstract Large current‐driven alkaline water splitting for large‐scale hydrogen production generally suffers from the sluggish charge transfer kinetics. Commercial noble‐metal catalysts are unstable in large‐current operation, while most non‐noble metal catalysts can only achieve high activity at low current densities <200 mA cm−2, far lower than industrially‐required current densities (>500 mA cm−2). Herein, a sulfide‐based metallic heterostructure is designed to meet the industrial demand by regulating the electronic structure of phase transition coupling with interfacial defects from Mo and Ni incorporation. The modulation of metallic Mo2S3 and in situ epitaxial growth of bifunctional Ni‐based catalyst to construct metallic heterostructure can facilitate the charge transfer for fast Volmer H and Heyrovsky H2 generation. The Mo2S3@NiMo3S4 electrolyzer requires an ultralow voltage of 1.672 V at a large current density of 1000 mA cm−2, with ≈100% retention over 100 h, outperforming the commercial RuO2||Pt/C, owing to the synergistic effect of the phase and interface electronic modulation. This work sheds light on the design of metallic heterostructure with an optimized interfacial electronic structure and abundant active sites for industrial water splitting.https://doi.org/10.1002/advs.202202750bimetal modulationinterface engineeringlarge current densitymetallic heterostructureoverall water splitting |
| spellingShingle | Tong Wu Shumao Xu Zhuang Zhang Mengjia Luo Ruiqi Wang Yufeng Tang Jiacheng Wang Fuqiang Huang Bimetal Modulation Stabilizing a Metallic Heterostructure for Efficient Overall Water Splitting at Large Current Density Advanced Science bimetal modulation interface engineering large current density metallic heterostructure overall water splitting |
| title | Bimetal Modulation Stabilizing a Metallic Heterostructure for Efficient Overall Water Splitting at Large Current Density |
| title_full | Bimetal Modulation Stabilizing a Metallic Heterostructure for Efficient Overall Water Splitting at Large Current Density |
| title_fullStr | Bimetal Modulation Stabilizing a Metallic Heterostructure for Efficient Overall Water Splitting at Large Current Density |
| title_full_unstemmed | Bimetal Modulation Stabilizing a Metallic Heterostructure for Efficient Overall Water Splitting at Large Current Density |
| title_short | Bimetal Modulation Stabilizing a Metallic Heterostructure for Efficient Overall Water Splitting at Large Current Density |
| title_sort | bimetal modulation stabilizing a metallic heterostructure for efficient overall water splitting at large current density |
| topic | bimetal modulation interface engineering large current density metallic heterostructure overall water splitting |
| url | https://doi.org/10.1002/advs.202202750 |
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