Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Tareq, Foysal Kabir | - |
dc.contributor.author | Lee, Ha-Young | - |
dc.contributor.author | Shin, Cheol-Hwan | - |
dc.contributor.author | Kojo, Seim Isaac | - |
dc.contributor.author | Yu, Jong-Sung | - |
dc.date.accessioned | 2024-08-30T09:10:13Z | - |
dc.date.available | 2024-08-30T09:10:13Z | - |
dc.date.created | 2024-07-12 | - |
dc.date.issued | 2024-09 | - |
dc.identifier.issn | 0013-4686 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/56826 | - |
dc.description.abstract | State-of-the-art electrocatalysts are based on catalytically active metal deposited on conductive porous carbon. Herein, we report a new strategy of engineering of a honeycomb-structured S and N dual-doped graphene-like carbon (SNG) as a supporting material for Rh catalysts by a simple low-temperature (850 °C) pyrolysis of S-doped carbon nitride (S-CN) in the presence of Mg. Interestingly, here Mg plays a marvelous dual role not only as a reducing agent for graphitizing the S-CN but also as a precursor for new Mg3N2 and MgS products, which play as pore-generating templates for honeycomb-like structures. This features highly robust graphitized carbon with excellent electrical conductivity, proper S and N content, and porosity, making it highly desirable as catalyst support. Supporting Rh (5.2 wt.%) on SNG outperforms state-of-the-art commercial Pt/C electrodes for hydrogen evolution reaction (HER) under alkaline settings (1.0 M KOH) with an extremely lower overpotential of 13 mV at 10 mA cm−2, a lower Tafel value, and a higher turnover frequency. In addition, Rh/SNG as the cathode for industrial water electrolysis in 6.0 M KOH electrolyte at 70 °C shows excellent performance with only 1.76 Vcell to achieve 500 mA cm−2 and maintains long-term durability with negligible decay. The distinctive properties of SNG, including S and N dual doping, high graphiticity, superior electrical conductivity, and honeycomb-like hierarchical meso‑ and macropore structure, are credited with this remarkable HER performance. The S and N dopants in the SNG framework optimize the electronic structure of the Rh by synergistic interaction between them as illustrated by first-principal density functional theory calculations and electronic structure analysis. © 2024 Elsevier Ltd | - |
dc.language | English | - |
dc.publisher | Elsevier | - |
dc.title | Honeycomb-structured S and N-codoped highly graphitized carbon as a catalyst support for Rh nanoparticles: A new benchmark electrocatalyst for hydrogen evolution reaction | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.electacta.2024.144627 | - |
dc.identifier.wosid | 001266156100001 | - |
dc.identifier.scopusid | 2-s2.0-85197160255 | - |
dc.identifier.bibliographicCitation | Electrochimica Acta, v.498 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordAuthor | Hydrogen evolution reaction | - |
dc.subject.keywordAuthor | Magnesiothermic reduction | - |
dc.subject.keywordAuthor | S and N dual doping | - |
dc.subject.keywordAuthor | Honeycomb structure | - |
dc.subject.keywordAuthor | Graphitic carbon | - |
dc.subject.keywordAuthor | Catalyst support | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | SULFUR | - |
dc.subject.keywordPlus | SINGLE | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | RHODIUM | - |
dc.subject.keywordPlus | NITRIDE | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordPlus | OXYGEN REDUCTION REACTION | - |
dc.subject.keywordPlus | NITROGEN-DOPED GRAPHENE | - |
dc.citation.title | Electrochimica Acta | - |
dc.citation.volume | 498 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Electrochemistry | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.type.docType | Article | - |
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