Full metadata record

DC Field Value Language
dc.contributor.authorKim, In Gyeom-
dc.contributor.authorNah, In Wook-
dc.contributor.authorOh, In-Hwan-
dc.contributor.authorPark, Sehkyu-
dc.date.accessioned2024-01-20T00:30:57Z-
dc.date.available2024-01-20T00:30:57Z-
dc.date.created2021-09-04-
dc.date.issued2017-10-01-
dc.identifier.issn0378-7753-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/122188-
dc.description.abstractThree-dimensional (3D) crumpled reduced graphene oxide supported Pt-Ir alloys that served as bifunctional oxygen catalysts for use in untized regenerative fuel cells were synthesized by a facile spray pyrolysis method. Pt-Ir catalysts supported on rGO (Pt-Ir/rG0s) were physically characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA) to observe change in composition by heat treatment, alloying, and morphological transition of the catalysts. Their catalytic activities and stabilities for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) conditions were electrochemically investigated using cyclic voltammetry (CV), linear sweep voltammetry (LSV), potential cycling and hold tests on the rotating disk electrode (RDE). Pt-Ir/rGO with no post heat treatment (Pt-Ir/rGO_NP) showed a lower activity for ORR and OER although metal nanoparticles decorated on the support are relatively small. However, Pt-Ir/rGO showed remarkably enhanced activity following heat treatment, depending on temperature. Pt-Ir/rGO heat-treated at 600 degrees C after spray pyrolysis (Pt-Ir/rGO_P600) exhibited a higher activity and stability than a commercially available Pt/C catalyst kept under the ORR condition, and it also revealed a comparable OER activity and durability versus the commercial unsupported Ir catalyst. (C) 2017 Elsevier B.V. All rights reserved.-
dc.languageEnglish-
dc.publisherELSEVIER SCIENCE BV-
dc.subjectOXYGEN REDUCTION REACTION-
dc.subjectLITHIUM-ION BATTERIES-
dc.subjectMETHANOL ELECTROOXIDATION-
dc.subjectCATHODE CATALYSTS-
dc.subjectWATER OXIDATION-
dc.subjectORR ACTIVITY-
dc.subjectELECTROCATALYSTS-
dc.subjectCARBON-
dc.subjectCO-
dc.subjectELECTROLYTE-
dc.titleCrumpled rGO-supported Pt-Ir bifunctional catalyst prepared by spray pyrolysis for unitized regenerative fuel cells-
dc.typeArticle-
dc.identifier.doi10.1016/j.jpowsour.2017.08.015-
dc.description.journalClass1-
dc.identifier.bibliographicCitationJOURNAL OF POWER SOURCES, v.364, pp.215 - 225-
dc.citation.titleJOURNAL OF POWER SOURCES-
dc.citation.volume364-
dc.citation.startPage215-
dc.citation.endPage225-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.identifier.wosid000412250800024-
dc.identifier.scopusid2-s2.0-85028930054-
dc.relation.journalWebOfScienceCategoryChemistry, Physical-
dc.relation.journalWebOfScienceCategoryElectrochemistry-
dc.relation.journalWebOfScienceCategoryEnergy & Fuels-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.relation.journalResearchAreaChemistry-
dc.relation.journalResearchAreaElectrochemistry-
dc.relation.journalResearchAreaEnergy & Fuels-
dc.relation.journalResearchAreaMaterials Science-
dc.type.docTypeArticle-
dc.subject.keywordPlusOXYGEN REDUCTION REACTION-
dc.subject.keywordPlusLITHIUM-ION BATTERIES-
dc.subject.keywordPlusMETHANOL ELECTROOXIDATION-
dc.subject.keywordPlusCATHODE CATALYSTS-
dc.subject.keywordPlusWATER OXIDATION-
dc.subject.keywordPlusORR ACTIVITY-
dc.subject.keywordPlusELECTROCATALYSTS-
dc.subject.keywordPlusCARBON-
dc.subject.keywordPlusCO-
dc.subject.keywordPlusELECTROLYTE-
dc.subject.keywordAuthorPt-Ir alloy catalyst-
dc.subject.keywordAuthorReduced graphene oxide-
dc.subject.keywordAuthorSpray pyrolysis-
dc.subject.keywordAuthorPost heat treatment-
dc.subject.keywordAuthorUnitized regenerative fuel cells-
Appears in Collections:
KIST Article > 2017
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

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

BROWSE