Full metadata record
DC Field | Value | Language |
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dc.citation.endPage | 1314 | - |
dc.citation.number | 12 | - |
dc.citation.startPage | 1309 | - |
dc.citation.title | NATURE MATERIALS | - |
dc.citation.volume | 18 | - |
dc.contributor.author | Yang, Jieun | - |
dc.contributor.author | Mohmad, Abdul Rahman | - |
dc.contributor.author | Wang, Yan | - |
dc.contributor.author | Fullon, Raymond | - |
dc.contributor.author | Song, Xiuju | - |
dc.contributor.author | Zhao, Fang | - |
dc.contributor.author | Bozkurt, Ibrahim | - |
dc.contributor.author | Augustin, Mathias | - |
dc.contributor.author | Santos, Elton J. G. | - |
dc.contributor.author | Shin, Hyeon Suk | - |
dc.contributor.author | Zhang, Wenjing | - |
dc.contributor.author | Voiry, Damien | - |
dc.contributor.author | Jeong, Hu Young | - |
dc.contributor.author | Chhowalla, Manish | - |
dc.date.accessioned | 2023-12-21T18:17:00Z | - |
dc.date.available | 2023-12-21T18:17:00Z | - |
dc.date.created | 2019-09-16 | - |
dc.date.issued | 2019-12 | - |
dc.description.abstract | Metallic transition metal dichalcogenides (TMDs)1–8 are good catalysts for the hydrogen evolution reaction (HER). The overpotential and Tafel slope values of metallic phases and edges9 of two-dimensional (2D) TMDs approach those of Pt. However, the overall current density of 2D TMD catalysts remains orders of magnitude lower (~10–100 mA cm−2) than industrial Pt and Ir electrolysers (>1,000 mA cm−2)10,11. Here, we report the synthesis of the metallic 2H phase of niobium disulfide with additional niobium (2H Nb1+xS2, where x is ~0.35)12 as a HER catalyst with current densities of >5,000 mA cm−2 at ~420 mV versus a reversible hydrogen electrode. We find the exchange current density at 0 V for 2H Nb1.35S2 to be ~0.8 mA cm−2, corresponding to a turnover frequency of ~0.2 s−1. We demonstrate an electrolyser based on a 2H Nb1+ xS2 cathode that can generate current densities of 1,000 mA cm−2. Our theoretical results reveal that 2H Nb1+ xS2 with Nb-terminated surface has free energy for hydrogen adsorption that is close to thermoneutral, facilitating HER. Therefore, 2H Nb1+ xS2 could be a viable catalyst for practical electrolysers. | - |
dc.identifier.bibliographicCitation | NATURE MATERIALS, v.18, no.12, pp.1309 - 1314 | - |
dc.identifier.doi | 10.1038/s41563-019-0463-8 | - |
dc.identifier.issn | 1476-1122 | - |
dc.identifier.scopusid | 2-s2.0-85071226256 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/29071 | - |
dc.identifier.url | https://www.nature.com/articles/s41563-019-0463-8 | - |
dc.identifier.wosid | 000497968400014 | - |
dc.language | 영어 | - |
dc.publisher | Nature Publishing Group | - |
dc.title | Ultrahigh-current-density niobium disulfide catalysts for hydrogen evolution | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Chemistry; Materials Science; Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | ACTIVE EDGE SITES | - |
dc.subject.keywordPlus | INITIO MOLECULAR-DYNAMICS | - |
dc.subject.keywordPlus | TOTAL-ENERGY CALCULATIONS | - |
dc.subject.keywordPlus | MOS2 NANOSHEETS | - |
dc.subject.keywordPlus | ELECTROCATALYSIS | - |
dc.subject.keywordPlus | MOLYBDENUM | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | LAYER | - |
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