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Raj, Kumar Bera
나노물질 및 화학반응 연구단
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Engineering Active Sites in Three-Dimensional Hierarchically Porous Graphene-Like Carbon with Co and N-Doped Carbon for High-Performance Zinc-Air Battery

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dc.contributor.authorRaj Kumar Bera-
dc.contributor.authorHongjun Park-
dc.contributor.authorRyong Ryoo-
dc.date.accessioned2021-11-08T08:30:02Z-
dc.date.available2021-11-08T08:30:02Z-
dc.date.created2021-08-26-
dc.date.issued2021-11-02-
dc.identifier.issn2196-0216-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/10614-
dc.description.abstract© 2021 Wiley-VCH GmbHThe design of active sites plays an important role in developing highly active oxygen electrocatalysts in Zn-air batteries (ZnABs). Here, we report the formation of cobalt (Co) nanoparticles and thin graphitic N-doped carbon (NC) supported on three-dimensional hierarchically porous graphene-like carbon (Co-NC/3DHPGC) to maximize the accessibility of Co-NC active sites for oxygen reduction/evolution reactions (ORR/OER). The produced Co-NC/3DHPGC exhibits a broad size distribution (5–30 nm) of Co nanoparticles dispersed on the external surface of 3DHPGC and coated with NC to a thickness of ∼2 nm. We attributed the formation of Co nanoparticles with broad size distribution to the hierarchical porosity of 3DHPGC, which served as a cage to stabilize the Co nanoparticles and increase the metal dispersion; the produced Co nanoparticles catalyze the formation of graphitic NC. Compared with commercial Pt/C and RuO2 catalysts, the resultant Co-NC/3DHPGC exhibits excellent bifunctional ORR/OER electrocatalytic activity and high durability. The high electrocatalytic performance is ascribed to the accessibility of highly active Co-NC sites through mesopores of 3DHPGC. The ZnAB assembled with Co-NC/3DHPGC exhibits high energy density and efficiency. This systematic engineering and rational synthesis strategy may provide new insight into the development of high-performance oxygen electrocatalysts for metal-air batteries and fuel cell technology.-
dc.language영어-
dc.publisherJohn Wiley and Sons Inc-
dc.titleEngineering Active Sites in Three-Dimensional Hierarchically Porous Graphene-Like Carbon with Co and N-Doped Carbon for High-Performance Zinc-Air Battery-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000684735600001-
dc.identifier.scopusid2-s2.0-85112370459-
dc.identifier.rimsid76245-
dc.contributor.affiliatedAuthorRaj Kumar Bera-
dc.contributor.affiliatedAuthorHongjun Park-
dc.contributor.affiliatedAuthorRyong Ryoo-
dc.identifier.doi10.1002/celc.202100807-
dc.identifier.bibliographicCitationCHEMELECTROCHEM, v.8, no.21, pp.4038 - 4046-
dc.relation.isPartOfCHEMELECTROCHEM-
dc.citation.titleCHEMELECTROCHEM-
dc.citation.volume8-
dc.citation.number21-
dc.citation.startPage4038-
dc.citation.endPage4046-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaElectrochemistry-
dc.relation.journalWebOfScienceCategoryElectrochemistry-
dc.subject.keywordPlusOXYGEN REDUCTION-
dc.subject.keywordPlusELECTROCATALYSTS-
dc.subject.keywordPlusEVOLUTION-
dc.subject.keywordPlusCATALYSTS-
dc.subject.keywordPlusFABRICATION-
dc.subject.keywordPlusCONVERSION-
dc.subject.keywordPlusNANOSHEETS-
dc.subject.keywordPlusHYDROGEN-
dc.subject.keywordPlusZEOLITE-TEMPLATED CARBON-
dc.subject.keywordAuthor3D graphene-like carbon-
dc.subject.keywordAuthoractive site-
dc.subject.keywordAuthorN-doped carbon-
dc.subject.keywordAuthorbifunctional electrocatalyst-
dc.subject.keywordAuthorZn-air battery-
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > 1. Journal Papers (저널논문)
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