Full metadata record
DC Field | Value | Language |
---|---|---|
dc.citation.startPage | 2403674 | - |
dc.citation.title | ADVANCED SCIENCE | - |
dc.contributor.author | Ma, Kyung Yeol | - |
dc.contributor.author | Kim, Hyeongjoon | - |
dc.contributor.author | Hwang, Hyuntae | - |
dc.contributor.author | Jeong, Da Sol | - |
dc.contributor.author | Lee, Hoon Ju | - |
dc.contributor.author | Cho, Kyeongseo | - |
dc.contributor.author | Yang, Jieun | - |
dc.contributor.author | Jeong, Hu Young | - |
dc.contributor.author | Shin, Hyeon Suk | - |
dc.date.accessioned | 2024-08-12T10:05:18Z | - |
dc.date.available | 2024-08-12T10:05:18Z | - |
dc.date.created | 2024-08-05 | - |
dc.date.issued | 2024-07 | - |
dc.description.abstract | Nickel boride catalysts show great potential as low-cost and efficient alternatives to noble-metal catalysts in acidic media; however, synthesizing and isolating a specific phase and composition of nickel boride is nontrivial, and issues persist in their long-term stability as electrocatalysts. Here, a single-crystal nickel boride, Ni23B6, is reported which exhibits high electrocatalytic activity for the hydrogen evolution reaction (HER) in an acidic solution, and that its poor long-term stability can be overcome via encapsulation by single-crystal trilayer hexagonal boron nitride (hBN) film. Interestingly, hBN-covered Ni23B6 on a Ni substrate shows an identical overpotential of 52 mV at a current density of 10 mA cm(-2) to that of bare Ni23B6. This phenomenon indicates that the single-crystalline hBN layer is catalytically transparent and does not obstruct HER activation. The hBN/Ni23B6/Ni has remarkable long-term stability with negligible changes to its polarization curves for 2000 cycles, whereas the Ni23B6/Ni shows significant degradation after 650 cycles. Furthermore, chronoamperometric measurements indicate that stability is preserved for >20 h. Long-term stability tests also reveal that the surface morphology and chemical structure of the hBN/Ni23B6/Ni electrode remain preserved. This work provides a model for the practical design of robust and durable electrochemical catalysts through the use of hBN encapsulation. | - |
dc.identifier.bibliographicCitation | ADVANCED SCIENCE, pp.2403674 | - |
dc.identifier.doi | 10.1002/advs.202403674 | - |
dc.identifier.issn | 2198-3844 | - |
dc.identifier.scopusid | 2-s2.0-85198488003 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/83460 | - |
dc.identifier.wosid | 001271191200001 | - |
dc.language | 영어 | - |
dc.publisher | WILEY | - |
dc.title | Enhanced Long-Term Stability of Crystalline Nickel–Boride (Ni23B6) Electrocatalyst by Encapsulation with Hexagonal Boron Nitride | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | catalytic transparency | - |
dc.subject.keywordAuthor | electrochemical catalysts | - |
dc.subject.keywordAuthor | hexagonal boron nitride | - |
dc.subject.keywordAuthor | hydrogen evolution reaction | - |
dc.subject.keywordAuthor | metal boride | - |
dc.subject.keywordPlus | NI-B | - |
dc.subject.keywordPlus | HYDROGEN EVOLUTION | - |
dc.subject.keywordPlus | OXYGEN REDUCTION | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | TRANSPORT | - |
dc.subject.keywordPlus | ALLOYS | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | GROWTH | - |
dc.subject.keywordPlus | CATALYSIS | - |
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