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Baek, Jong-Beom
Center for Dimension-Controllable Organic Frameworks
Research Interests
  • Covalent Organic Frameworks (COFs), Carbon Nanotubes(CNTs), graphene, Energy Conversion and Storage

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A facile approach to tailoring electrocatalytic activities of imine-rich nitrogen-doped graphene for oxygen reduction reaction

DC FieldValueLanguage
dc.contributor.authorLee, Min Seokko
dc.contributor.authorWhang, Dong Ryeolko
dc.contributor.authorChoi, Hyun-Jungko
dc.contributor.authorYang, Mun Hoko
dc.contributor.authorKim, Bong-Giko
dc.contributor.authorBaek, Jong-Beomko
dc.contributor.authorChang, Dong Wookko
dc.date.available2017-08-03T07:40:17Z-
dc.date.created2017-07-31ko
dc.date.issued201710ko
dc.identifier.citationCARBON, v.122, no., pp.515 - 523ko
dc.identifier.issn0008-6223ko
dc.identifier.urihttp://scholarworks.unist.ac.kr/handle/201301/22419-
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S0008622317306796?via%3Dihubko
dc.description.abstractWe report efficient modulation of the electrocatalytic activity of imine-rich nitrogen-doped graphene nanosheets (IRnGs) in the oxygen reduction reaction (ORR) by chemical functionalization. IRnGs are prepared by a simple acid-catalyzed dehydration reaction between graphene oxide and aniline derivatives. Various electron-donating and electron-withdrawing substituents are introduced in the para-position of aniline to afford diverse IRnG electrocatalysts. Cyclic voltammetry and rotating ring disk electrode measurements show that the electrocatalytic activity of IRnGs for ORR is highly sensitive to the electronic characteristics of functionalities present in their chemical structures. Thus, the above ORR activities are significantly improved by increasing the electron-withdrawing capability of substituents, since this promotes the beneficial polarization of electrocatalytically active imine bond ([sbnd]C[dbnd]N[sbnd]) in IRnGs. In addition, metal-free IRnGs electrocatalysts offer additional advantages of high selectivity, good long-term stability and excellent tolerance to methanol crossover for ORR in alkaline solution.ko
dc.languageENGko
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDko
dc.subjectImineko
dc.subjectNitrogen-doped grapheneko
dc.subjectOxygen reduction reactionko
dc.subjectElectrocatalystko
dc.titleA facile approach to tailoring electrocatalytic activities of imine-rich nitrogen-doped graphene for oxygen reduction reactionko
dc.typeARTICLEko
dc.identifier.pid1053null
dc.identifier.rimsid28849ko
dc.identifier.scopusid2-s2.0-85021721497ko
dc.identifier.wosid000407394200058ko
dc.type.rimsAko
dc.identifier.doihttp://dx.doi.org/10.1016/j.carbon.2017.07.001ko
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