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dc.contributor.authorYan, Xuecheng
dc.contributor.authorDong, Chung-Li
dc.contributor.authorHuang, Yu-Cheng
dc.contributor.authorJia, Yi
dc.contributor.authorZhang, Longzhou
dc.contributor.authorShen, Shaohua
dc.contributor.authorChen, Jun
dc.contributor.authorYao, Xiangdong
dc.date.accessioned2019-10-17T21:53:28Z
dc.date.available2019-10-17T21:53:28Z
dc.date.issued2019
dc.identifier.issn2366-9608
dc.identifier.doi10.1002/smtd.201800439
dc.identifier.urihttp://hdl.handle.net/10072/388129
dc.description.abstractGreat effort has been contributed to exploring efficient and cost‐effective oxygen reduction reaction (ORR) catalysts for fuel cell applications in the past decades. Now various electrocatalysts can be synthesized for high‐performance ORR catalysis. However, the identification of the ORR active sites in many nonprecious metal‐based catalysts is still difficult. This is due to the heterogeneity and complexity of the catalyst structures. For example, the active site of core–shell ORR electrocatalysts has been a continuously debatable issue, hampering the exploration of new ORR catalysts. Herein, a carbonized Co metal organic framework (Co@C) is used to uncover the ORR active sites in core–shell electrocatalysts. The surface Co particles in the Co@C sample are removed by HCl wash, and the Co cores are removed using an electrochemical activation method. The characterizations reveal that both the samples before and after the electrochemical activation show the existence of single Co species. The corresponding electrocatalysis test results indicate that neither the surface Co particles nor the encapsulated Co cores influence the ORR performance of the samples. It is deduced that the single Co species coordinated with the nitrogen in the carbon layers of the core–shell catalysts are the actual ORR active sites.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherWiley
dc.relation.ispartofissue9
dc.relation.ispartofjournalSmall Methods
dc.relation.ispartofvolume3
dc.subject.fieldofresearchNanotechnology
dc.subject.fieldofresearchcode1007
dc.subject.keywordsScience & Technology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsTechnology
dc.subject.keywordsChemistry, Physical
dc.subject.keywordsNanoscience & Nanotechnology
dc.titleProbing the Active Sites of Carbon-Encapsulated Cobalt Nanoparticles for Oxygen Reduction
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationYan, X; Dong, C-L; Huang, Y-C; Jia, Y; Zhang, L; Shen, S; Chen, J; Yao, X, Probing the Active Sites of Carbon-Encapsulated Cobalt Nanoparticles for Oxygen Reduction, Small Methods, 2019, 3 (9)
dc.date.updated2019-10-08T03:12:14Z
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the peer reviewed version of the following article: Probing the Active Sites of Carbon-Encapsulated Cobalt Nanoparticles for Oxygen Reduction, Small Methods, Volume 3, Issue 9, Special Issue: Single Atoms for Energy Applications, 2019, which has been published in final form at 10.1002/smtd.201800439. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving (http://olabout.wiley.com/WileyCDA/Section/id-828039.html)
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gro.griffith.authorYan, Xuecheng
gro.griffith.authorYao, Xiangdong
gro.griffith.authorJia, Yi
gro.griffith.authorZhang, Longzhou


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