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DC Field | Value | Language |
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dc.citation.endPage | 15800 | - |
dc.citation.number | 26 | - |
dc.citation.startPage | 15794 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 7 | - |
dc.contributor.author | Meena, Abhishek | - |
dc.contributor.author | Ha, Miran | - |
dc.contributor.author | Chandrasekaran, S. Selva | - |
dc.contributor.author | Sultan, Siraj | - |
dc.contributor.author | Thangavel, Pandiarajan | - |
dc.contributor.author | Harzandi, AhmadM. | - |
dc.contributor.author | Singh, Bhupendra | - |
dc.contributor.author | Tiwari, Jitendra N. | - |
dc.contributor.author | Kim, Kwang S. | - |
dc.date.accessioned | 2023-12-21T19:00:47Z | - |
dc.date.available | 2023-12-21T19:00:47Z | - |
dc.date.created | 2019-07-26 | - |
dc.date.issued | 2019-07 | - |
dc.description.abstract | We report a highly efficient and cost-effective binder-free catalyst for the hydrogen evolution reaction (HER) using V2O5 particles on nickel foam (NF) (V2O5/Ni(OH)(2)@NF). This low-cost catalyst exhibits Pt-like activity with a low overpotential of 39 mV at 10 mA cm(-2) (lowest among V-based materials which are known to be generally non-explosive and safe) and long-term stability in a 1 M KOH solution. The overall performance is highly comparable to that of a commercial 20% Pt/C catalyst on NF. Furthermore, the V2O5/Ni(OH)(2)@NF outperforms the Pt/C catalyst at a higher current density (100 mA cm(-2)) which is more preferable for industrial applications. First principles calculations show that the remarkable HER activity is ascribed to the near-zero adsorption free energy (Delta G(H*)) on the Ni-site of Ni(OH)(2)@NF and the Ni- and O-sites of in situ generated V2O5@NF, due to the charge transfer arising from adsorbed O atoms on Ni(111), along with high conductivity of NF. O-adsorption on the Ni transition metal surface downshifts the d-band center of the transition metal, which helps in quick hydrogen desorption by weakening the hydrogen binding strength. As a result, most Ni fcc sites of V2O5/Ni(OH)(2)@NF are more active than pristine Ni fcc sites. The V2O5/Ni(OH)(2)@NF catalyst initiates overall water splitting at 1.53 V in a 6 M KOH solution for solar-to-hydrogen generation in a two-electrode set-up using a solar panel. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.7, no.26, pp.15794 - 15800 | - |
dc.identifier.doi | 10.1039/c9ta03627j | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-85068516191 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/27185 | - |
dc.identifier.url | https://pubs.rsc.org/en/content/articlelanding/2019/TA/C9TA03627J#!divAbstract | - |
dc.identifier.wosid | 000474271200029 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Pt-like hydrogen evolution on a V2O5/Ni(OH)(2) electrocatalyst | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | TOTAL-ENERGY CALCULATIONS | - |
dc.subject.keywordPlus | NICKEL FOAM | - |
dc.subject.keywordPlus | FACILE SYNTHESIS | - |
dc.subject.keywordPlus | NANOWIRE ARRAYS | - |
dc.subject.keywordPlus | NANOSHEET ARRAY | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | CATALYST | - |
dc.subject.keywordPlus | ELECTRODE | - |
dc.subject.keywordPlus | ULTRALOW | - |
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