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DC Field | Value | Language |
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dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 414 | - |
dc.contributor.author | Zhou, Shizheng | - |
dc.contributor.author | Jang, Haeseong | - |
dc.contributor.author | Qin, Qing | - |
dc.contributor.author | Li, Zijian | - |
dc.contributor.author | Kim, Min Gyu | - |
dc.contributor.author | Ji, Xuqiang | - |
dc.contributor.author | Liu, Xien | - |
dc.contributor.author | Cho, Jaephil | - |
dc.date.accessioned | 2023-12-21T15:44:43Z | - |
dc.date.available | 2023-12-21T15:44:43Z | - |
dc.date.created | 2021-05-17 | - |
dc.date.issued | 2021-06 | - |
dc.description.abstract | D-band-center control engineering, particularly combining both cation and anion intercalations towards heterostructure formation with simultaneous usage of Ru, N as well as F species, for optimal electronic structure as efficient hydrogen evolution reaction (HER) catalysts remains a daunting challenge but critical for renewableenergy technologies. Herein, we lay emphasis on the design of active-site electronic structure based on dband-center shift through the construction of Co4N-CoF2 heterostructure coupled with Ru doping (Ru/Co4NCoF2). Solvothermal coordination reaction followed by annealing course causes cooccurrence of F, N, Ru in Co neighborhood. As-obtained Ru/Co4N-CoF2 exhibits superior HER activity in alkaline electrolyte with overpotential as low as 53 mV to yield a current density of 10 mA cm(-2) which is close to that of commercial Pt/C, outperforming many transition-metal-based catalysts recent-reported. Moreover, it still presents good durability with continuous operation of 22 h in 1.0 M KOH. Such excellent performance is ascribed to appropriate electron structure of Ru/Co4N-CoF2 for optimized hydrogen binding abilities on Co/Ru sites as confirmed by synchrotronbased X-ray adsorption near-edge structure and X-ray photoelectron spectroscopies. This study not only establishes highly active electrocatalysts by impacting d-band center of active sites but also provides valuable insights into the synergistic-effect protocol of doping and heterostructure strategies for d-band-center shifting. | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.414 | - |
dc.identifier.doi | 10.1016/j.cej.2021.128865 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.scopusid | 2-s2.0-85100999514 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/52898 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S1385894721004599?via%3Dihub | - |
dc.identifier.wosid | 000641343700005 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Ru atom-modified Co4N-CoF2 heterojunction catalyst for high-performance alkaline hydrogen evolution | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental; Engineering, Chemical | - |
dc.relation.journalResearchArea | Engineering | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | D-band-center | - |
dc.subject.keywordAuthor | Heterostructure | - |
dc.subject.keywordAuthor | Cobalt fluorides | - |
dc.subject.keywordAuthor | Hydrogen evolution reaction | - |
dc.subject.keywordAuthor | Electrocatalysts | - |
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