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Designing bifunctional catalysts for oxygen reduction/evolution reactions for high efficiency and long lifetime

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dc.contributor.authorNiranjanmurthiLingappan-
dc.contributor.authorBing Li-
dc.contributor.authorTae Hoon Lee-
dc.contributor.authorYoung Hee Lee-
dc.date.available2019-08-19T02:05:40Z-
dc.date.created2019-06-17-
dc.date.issued2019-08-
dc.identifier.issn0013-4686-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/5963-
dc.description.abstract© 2019 Elsevier Ltd Designing efficient and durable bifunctional oxygen catalyst to replace expensive Pt catalysts in oxygen reduction reaction and oxygen evolution reaction is crucial for various energy conversion devices, such as metal-air batteries and fuel cells. Although various nanocarbon/metal oxides have been developed, their catalytic efficiencies remain unsatisfactory; moreover, bi-functionality and the issue of long-term durability have remained elusive goals. Herein, we report the self-assembly of interconnected nickel-cobaltite nanocrystals on nitrogen-doped graphene via hydrothermal synthesis. The Co 3+ sites, the key radicals for bifunctional oxygen reduction and evolution reactions. Well-dispersed nitrogen-doped graphene serve as a platform for anchoring the interconnected nickel-cobaltite nanocrystals and improve the conductivity to maintain a high saturation current in oxygen reduction and low overpotential in evolution reaction, similar to Pt/C. Lifetimes as long as 200 h for oxygen reduction and 300 h for oxygen evolution are demonstrated with negligible degradations. The present approach paves the way for the rational design of various Gr-metal oxide hybrids for numerous applications-
dc.language영어-
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD-
dc.subjectBifunctional catalyst-
dc.subjectOxygen evolution reaction-
dc.subjectOxygen reduction reaction-
dc.subjectSelf-assembly-
dc.subjectSpinel metal oxides-
dc.titleDesigning bifunctional catalysts for oxygen reduction/evolution reactions for high efficiency and long lifetime-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000470236500005-
dc.identifier.scopusid2-s2.0-85065830830-
dc.identifier.rimsid68379-
dc.contributor.affiliatedAuthorNiranjanmurthiLingappan-
dc.contributor.affiliatedAuthorBing Li-
dc.contributor.affiliatedAuthorTae Hoon Lee-
dc.contributor.affiliatedAuthorYoung Hee Lee-
dc.identifier.doi10.1016/j.electacta.2019.04.176-
dc.identifier.bibliographicCitationELECTROCHIMICA ACTA, v.313, pp.41 - 47-
dc.relation.isPartOfELECTROCHIMICA ACTA-
dc.citation.titleELECTROCHIMICA ACTA-
dc.citation.volume313-
dc.citation.startPage41-
dc.citation.endPage47-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.subject.keywordAuthorBifunctional catalyst-
dc.subject.keywordAuthorOxygen evolution reaction-
dc.subject.keywordAuthorOxygen reduction reaction-
dc.subject.keywordAuthorSelf-assembly-
dc.subject.keywordAuthorSpinel metal oxides-
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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