Strong Bonding of Lattice N Activates Metal Ni to Achieve Efficient Water Splitting
Abstract Developing efficient and robust free‐standing electrocatalysts for overall water splitting is a promising but challenging task. Herein, the N‐incorporated Ni nanosheets non‐fully encapsulated by N‐doped carbon (NC) layer are fabricated (N─Ni©NC). The introduction of N not only regulates the...
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202411526 |
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| author | Niandan Zhao Wei Luo Sijun Li Hua Wang Yini Mao Yimin Jiang Wenbin Wang Ming Li Wei Su Rongxing He |
| author_facet | Niandan Zhao Wei Luo Sijun Li Hua Wang Yini Mao Yimin Jiang Wenbin Wang Ming Li Wei Su Rongxing He |
| author_sort | Niandan Zhao |
| collection | DOAJ |
| description | Abstract Developing efficient and robust free‐standing electrocatalysts for overall water splitting is a promising but challenging task. Herein, the N‐incorporated Ni nanosheets non‐fully encapsulated by N‐doped carbon (NC) layer are fabricated (N─Ni©NC). The introduction of N not only regulates the size of nanosheets in N─Ni©NC but also promotes the electrochemical activity of metal Ni. Experimental and theoretical results reveal that strong bonding of the lattice N activates the inert metal Ni by promoting charge transfer between Ni and N. In addition, the upward shift of the d‐band center induced by lattice N enhances the adsorption of intermediates, thereby making Ni as a new OER active site together with C. This strategy of generating Ni and C dual active sites by introducing lattice N greatly accelerates oxygen evolution reaction (OER) kinetics, resulting in excellent electrocatalytic performance of N─Ni©NC. At the current density of 10 mA cm−2, the overpotentials of hydrogen evolution reaction (HER) and OER are 27 and 206 mV, respectively, and the cell voltage for overall water splitting only needs 1.47 V. This work offers a unique heteroatom activation approach for designing free‐standing electrodes with high activity. |
| format | Article |
| id | doaj-art-8fe2ba9c3cb243fdb9bc00a21c8f30bb |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-8fe2ba9c3cb243fdb9bc00a21c8f30bb2025-01-29T09:50:18ZengWileyAdvanced Science2198-38442025-01-01124n/an/a10.1002/advs.202411526Strong Bonding of Lattice N Activates Metal Ni to Achieve Efficient Water SplittingNiandan Zhao0Wei Luo1Sijun Li2Hua Wang3Yini Mao4Yimin Jiang5Wenbin Wang6Ming Li7Wei Su8Rongxing He9Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 ChinaKey Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 ChinaKey Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 ChinaKey Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 ChinaKey Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 ChinaKey Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 ChinaKey Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 ChinaKey Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 ChinaKey Laboratory of Beibu Gulf Environment Change and Resources Utilization (Nanning Normal University), Ministry of Education, College of Chemistry and Life Science Nanning Normal University 175 Mingxiu East Road Nanning 530000 ChinaKey Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 ChinaAbstract Developing efficient and robust free‐standing electrocatalysts for overall water splitting is a promising but challenging task. Herein, the N‐incorporated Ni nanosheets non‐fully encapsulated by N‐doped carbon (NC) layer are fabricated (N─Ni©NC). The introduction of N not only regulates the size of nanosheets in N─Ni©NC but also promotes the electrochemical activity of metal Ni. Experimental and theoretical results reveal that strong bonding of the lattice N activates the inert metal Ni by promoting charge transfer between Ni and N. In addition, the upward shift of the d‐band center induced by lattice N enhances the adsorption of intermediates, thereby making Ni as a new OER active site together with C. This strategy of generating Ni and C dual active sites by introducing lattice N greatly accelerates oxygen evolution reaction (OER) kinetics, resulting in excellent electrocatalytic performance of N─Ni©NC. At the current density of 10 mA cm−2, the overpotentials of hydrogen evolution reaction (HER) and OER are 27 and 206 mV, respectively, and the cell voltage for overall water splitting only needs 1.47 V. This work offers a unique heteroatom activation approach for designing free‐standing electrodes with high activity.https://doi.org/10.1002/advs.202411526lattice NNi activationN─Ni©NCoverall water splittingstrong bonding |
| spellingShingle | Niandan Zhao Wei Luo Sijun Li Hua Wang Yini Mao Yimin Jiang Wenbin Wang Ming Li Wei Su Rongxing He Strong Bonding of Lattice N Activates Metal Ni to Achieve Efficient Water Splitting Advanced Science lattice N Ni activation N─Ni©NC overall water splitting strong bonding |
| title | Strong Bonding of Lattice N Activates Metal Ni to Achieve Efficient Water Splitting |
| title_full | Strong Bonding of Lattice N Activates Metal Ni to Achieve Efficient Water Splitting |
| title_fullStr | Strong Bonding of Lattice N Activates Metal Ni to Achieve Efficient Water Splitting |
| title_full_unstemmed | Strong Bonding of Lattice N Activates Metal Ni to Achieve Efficient Water Splitting |
| title_short | Strong Bonding of Lattice N Activates Metal Ni to Achieve Efficient Water Splitting |
| title_sort | strong bonding of lattice n activates metal ni to achieve efficient water splitting |
| topic | lattice N Ni activation N─Ni©NC overall water splitting strong bonding |
| url | https://doi.org/10.1002/advs.202411526 |
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