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Lee, Jun Hee
Quantum Materials for Energy Conversion Lab.
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DC Field Value Language
dc.citation.endPage 24050 -
dc.citation.number 45 -
dc.citation.startPage 24041 -
dc.citation.volume 10 - Lee, Yeongdae - Ahn, Jang Hyuk - Jang, Haeseong - Lee, Jisu - Yoon, Subhin - Lee, Dong-Gyu - Kim, Min Gyu - Lee, Jun Hee - Song, Hyun-Kon - 2023-12-21T13:19:39Z - 2023-12-21T13:19:39Z - 2022-12-06 - 2022-11 -
dc.description.abstract Catalyst-support interaction triggering biased electron flows between the catalyst and reactant has been studied for electrocatalysis. The interaction was limited to the interfacial region between the catalyst and support when nanoparticle catalysts, which are bulky from the viewpoint of atomic dimensions, were employed. To clarify and maximize the effects of supports, herein, we investigated the catalyst-support interaction of a molecular catalyst loaded on a support. Iron phthalocyanine (FePc) as the molecular catalyst for the oxygen reduction reaction (ORR) was loaded on a two-dimensional monolayer leaf of titanium carbide (1L-Ti3C2). The strong interaction between Fe of FePc and Ti of 1L-Ti3C2 developed via FeTi2 coordination encouraged the square-planar structure of FePc to be concavely distorted. The electron-rich Fe-active site having extra electrons given by less electronegative Ti of Ti3C2 allowed the single-oxygen intermediate species (*O) to be readily protonated to *OH, moving the RDS to the desorption step having a lower free energy gap or kinetic barrier. As a result, the strong FePc-Ti3C2 interaction decreased the potential required for reducing oxygen and moreover completed the ORR via a four-electron (4e) process rather than the 2e ORR. The catalyst durability was also improved due to the absence of peroxide generated from the 2e process. -
dc.identifier.bibliographicCitation JOURNAL OF MATERIALS CHEMISTRY A, v.10, no.45, pp.24041 - 24050 -
dc.identifier.doi 10.1039/d2ta06496k -
dc.identifier.issn 2050-7488 -
dc.identifier.scopusid 2-s2.0-85142323122 -
dc.identifier.uri -
dc.identifier.wosid 000882028700001 -
dc.language 영어 -
dc.publisher ROYAL SOC CHEMISTRY -
dc.title Very strong interaction between FeN4 and titanium carbide for durable 4-electron oxygen reduction reaction suppressing catalyst deactivation by peroxide -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary -
dc.relation.journalResearchArea Chemistry; Energy & Fuels; Materials Science -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordPlus HYDROGEN-PEROXIDE -
dc.subject.keywordPlus IRON-PHTHALOCYANINE -
dc.subject.keywordPlus CARBON-BLACK -
dc.subject.keywordPlus METAL PHTHALOCYANINES -
dc.subject.keywordPlus OXIDATION-STATE -
dc.subject.keywordPlus OXIDES -
dc.subject.keywordPlus ELECTROCATALYSIS -
dc.subject.keywordPlus ACTIVATION -
dc.subject.keywordPlus STABILITY -


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