File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher

조재필

Cho, Jaephil
Nano Energy Storage Material Lab.
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Full metadata record

DC Field Value Language
dc.citation.number 15 -
dc.citation.startPage 2004516 -
dc.citation.title ADVANCED SCIENCE -
dc.citation.volume 8 -
dc.contributor.author Zhang, Lijie -
dc.contributor.author Jang, Haeseong -
dc.contributor.author Wang, Yan -
dc.contributor.author Li, Zijian -
dc.contributor.author Zhang, Wei -
dc.contributor.author Kim, Min Gyu -
dc.contributor.author Yang, Dongjiang -
dc.contributor.author Liu, Shangguo -
dc.contributor.author Liu, Xien -
dc.contributor.author Cho, Jaephil -
dc.date.accessioned 2023-12-21T15:37:24Z -
dc.date.available 2023-12-21T15:37:24Z -
dc.date.created 2021-06-26 -
dc.date.issued 2021-08 -
dc.description.abstract Ru nanoparticles (NPs) and single atoms (SAs)-based materials have been investigated as alternative electrocatalysts to Pt/C for hydrogen evolution reaction (HER). Exploring the dominant role of atomic- and nano-ruthenium as active sites in acidic and alkaline media is very necessary for optimizing the performance. Herein, an electrocatalyst containing both Ru SAs and NPs anchored on defective carbon (RuSA+NP/DC) has been synthesized via a Ru-alginate metal-organic supramolecules conversion method. RuSA+NP/DC exhibits low overpotentials of 16.6 and 18.8 mV at 10 mA cm(-2) in acidic and alkaline electrolytes, respectively. Notably, its mass activities are dramatically improved, which are about 1.1 and 2.4 times those of Pt/C at an overpotential of 50 mV in acidic and alkaline media, respectively. Theoretical calculations reveal that Ru SAs own the most appropriate H* adsorption strength and thus, plays a dominant role for HER in acid electrolyte, while Ru NPs facilitate the dissociation of H2O that is the rate-determining step in alkaline electrolyte, leading to a remarkable HER activity. -
dc.identifier.bibliographicCitation ADVANCED SCIENCE, v.8, no.15, pp.2004516 -
dc.identifier.doi 10.1002/advs.202004516 -
dc.identifier.issn 2198-3844 -
dc.identifier.scopusid 2-s2.0-85107129092 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/53139 -
dc.identifier.url https://onlinelibrary.wiley.com/doi/10.1002/advs.202004516 -
dc.identifier.wosid 000657692600001 -
dc.language 영어 -
dc.publisher WILEY -
dc.title Exploring the Dominant Role of Atomic- and Nano-Ruthenium as Active Sites for Hydrogen Evolution Reaction in Both Acidic and Alkaline Media -
dc.type Article -
dc.description.isOpenAccess TRUE -
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 metal-organic supramolecules -
dc.subject.keywordAuthor ruthenium -
dc.subject.keywordAuthor single atoms -
dc.subject.keywordAuthor electrocatalysts -
dc.subject.keywordAuthor hydrogen evolution reaction -
dc.subject.keywordPlus EGG-BOX -
dc.subject.keywordPlus OXYGEN REDUCTION -
dc.subject.keywordPlus ELECTROCATALYSTS -
dc.subject.keywordPlus PLATINUM -
dc.subject.keywordPlus ALGINATE -
dc.subject.keywordPlus NANOPARTICLES -
dc.subject.keywordPlus CATALYSIS -
dc.subject.keywordPlus DESIGN -
dc.subject.keywordPlus PH -

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.