Nickel sulfide nanocrystals for electrochemical and photoelectrochemical hydrogen generation
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yoo, Jisun | - |
dc.contributor.author | Kwak, In Hye | - |
dc.contributor.author | Kwon, Ik Seon | - |
dc.contributor.author | Park, Kidong | - |
dc.contributor.author | Kim, Doyeon | - |
dc.contributor.author | Lee, Jong Hyun | - |
dc.contributor.author | Lim, Soo A. | - |
dc.contributor.author | Cha, Eun Hee | - |
dc.contributor.author | Park, Jeunghee | - |
dc.date.accessioned | 2021-08-31T08:04:35Z | - |
dc.date.available | 2021-08-31T08:04:35Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2020-03-07 | - |
dc.identifier.issn | 2050-7526 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/57310 | - |
dc.description.abstract | Photoelectrochemical water splitting has been considered as the most promising technology for generating hydrogen energy. Herein, we report nickel sulfide nanocrystals (NCs) as excellent catalysts for electrochemical and solar-driven photoelectrochemical (PEC) hydrogen evolution. Two polymorphic NiS and NiS1.97 NCs were synthesized with a controlled composition, and the NiS NCs showed higher electrocatalytic activity than the NiS1.97 NCs toward the hydrogen/oxygen evolution reactions in 0.5 M H2SO4 and 1 M KOH. Photocathodes were fabricated by growing the NiS and NiS1.97 NCs directly onto Si nanowire (NW) arrays. The deposition of NiS NCs results in excellent PEC performance in both acid and alkaline electroytes; the photocurrent is 10 mA cm(-2) (at 0 V vs. RHE) and the onset potential is 0.2 V. In contrast, the Si-NiS1.97 photocathode exhibits much lower photocurrent and less stability. Detailed structure analysis using X-ray photoelectron spectroscopy reveals that the NiS is more metallic than the NiS1.97 and retains the same electronic structures during the catalytic reaction. The high catalytic activity of metallic NiS NCs should be the main cause of this enhanced PEC performance, promising efficient water-splitting Si-based PEC cells. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | ELECTRONIC-STRUCTURE | - |
dc.subject | SILICON PHOTOANODES | - |
dc.subject | EVOLUTION REACTION | - |
dc.subject | THIN-FILM | - |
dc.subject | WATER | - |
dc.subject | EFFICIENT | - |
dc.subject | NANOSHEETS | - |
dc.subject | CATALYSTS | - |
dc.subject | NIS2 | - |
dc.subject | PHOTOCATHODES | - |
dc.title | Nickel sulfide nanocrystals for electrochemical and photoelectrochemical hydrogen generation | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Jeunghee | - |
dc.identifier.doi | 10.1039/c9tc05703j | - |
dc.identifier.scopusid | 2-s2.0-85081552026 | - |
dc.identifier.wosid | 000519972600034 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY C, v.8, no.9, pp.3240 - 3247 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY C | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY C | - |
dc.citation.volume | 8 | - |
dc.citation.number | 9 | - |
dc.citation.startPage | 3240 | - |
dc.citation.endPage | 3247 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | ELECTRONIC-STRUCTURE | - |
dc.subject.keywordPlus | SILICON PHOTOANODES | - |
dc.subject.keywordPlus | EVOLUTION REACTION | - |
dc.subject.keywordPlus | THIN-FILM | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | NIS2 | - |
dc.subject.keywordPlus | PHOTOCATHODES | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.