DC Field | Value | Language |
---|---|---|
dc.contributor.author | Roy, Sanjib Baran | ko |
dc.contributor.author | Jerng, Sahng-Kyoon | ko |
dc.contributor.author | Akbar, Kamran | ko |
dc.contributor.author | Jeon, Jae Ho | ko |
dc.contributor.author | Truong, Linh | ko |
dc.contributor.author | Chun, Seung-Hyun | ko |
dc.contributor.author | Noh, Min Jong | ko |
dc.contributor.author | Lee, Juho | ko |
dc.contributor.author | Kim, Yong-Hoon | ko |
dc.date.accessioned | 2019-08-05T02:20:28Z | - |
dc.date.available | 2019-08-05T02:20:28Z | - |
dc.date.created | 2019-07-01 | - |
dc.date.created | 2019-07-01 | - |
dc.date.created | 2019-07-01 | - |
dc.date.issued | 2019-07 | - |
dc.identifier.citation | JOURNAL OF MATERIALS CHEMISTRY A, v.7, no.28, pp.17046 - 17052 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | http://hdl.handle.net/10203/263957 | - |
dc.description.abstract | In spite of its great potential for sustainable water splitting technology, many challenges remain for the development of effective graphene-based hydrogen evolution reaction (HER) electrocatalysts. Based on mutually corroborating growth, electrochemical measurements, and density functional theory (DFT) calculations, we herein develop the HER-active vertical graphene nano-hills (VGNHs) on Co thin films such that Co atoms are introduced into the VGNH tip region. The HER activity exhibits a volcano-shaped curve with respect to the encapsulated Co density, and the best performance achieved at the nominal Co substrate thickness of 1 nm is characterized by the low onset potential, overpotential, and Tafel slope in acidic electrolyte. Especially, with this low-cost yet structurally and chemically stable Co-seeded VGNH catalyst, a record-level mass activity is achieved. The emergence of the HER activity from the combination of originally HER-inactive VGNHs and Co thin films is clarified by DFT calculations, which identifies the synergistic effects of the nanoscale curvature at the VGNH tip and the charge-transfer doping by encapsulated Co atoms. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Design and optimization of cobalt-encapsulating vertical graphene nano-hills for hydrogen evolution reaction | - |
dc.type | Article | - |
dc.identifier.wosid | 000476599900045 | - |
dc.identifier.scopusid | 2-s2.0-85069202557 | - |
dc.type.rims | ART | - |
dc.citation.volume | 7 | - |
dc.citation.issue | 28 | - |
dc.citation.beginningpage | 17046 | - |
dc.citation.endingpage | 17052 | - |
dc.citation.publicationname | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.identifier.doi | 10.1039/c9ta04878b | - |
dc.contributor.localauthor | Kim, Yong-Hoon | - |
dc.contributor.nonIdAuthor | Roy, Sanjib Baran | - |
dc.contributor.nonIdAuthor | Jerng, Sahng-Kyoon | - |
dc.contributor.nonIdAuthor | Akbar, Kamran | - |
dc.contributor.nonIdAuthor | Jeon, Jae Ho | - |
dc.contributor.nonIdAuthor | Truong, Linh | - |
dc.contributor.nonIdAuthor | Chun, Seung-Hyun | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | HIGH ELECTROCATALYTIC ACTIVITY | - |
dc.subject.keywordPlus | CARBON NANOTUBES | - |
dc.subject.keywordPlus | EFFICIENT ELECTROCATALYST | - |
dc.subject.keywordPlus | ACTIVE CATALYST | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | ENERGY | - |
dc.subject.keywordPlus | MOS2 | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | ELECTRODE | - |
dc.subject.keywordPlus | HYBRID | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.