Show simple item record

dc.contributor.authorCheng, Yi
dc.contributor.authorDou, S.
dc.contributor.authorSaunders, M.
dc.contributor.authorZhang, J.
dc.contributor.authorPan, J.
dc.contributor.authorWang, S.
dc.contributor.authorJiang, S.
dc.date.accessioned2017-03-17T08:29:03Z
dc.date.available2017-03-17T08:29:03Z
dc.date.created2017-02-19T19:31:47Z
dc.date.issued2016
dc.identifier.citationCheng, Y. and Dou, S. and Saunders, M. and Zhang, J. and Pan, J. and Wang, S. and Jiang, S. 2016. A class of transition metal-oxide@MnO<inf>: X</inf> core-shell structured oxygen electrocatalysts for reversible O<inf>2</inf> reduction and evolution reactions. Journal of Materials Chemistry A. 4 (36): pp. 13881-13889.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/50900
dc.identifier.doi10.1039/c6ta04758k
dc.description.abstract

© 2016 The Royal Society of Chemistry.It is highly desirable but challenging to develop a highly active as well as durable bifunctional electrocatalyst for the reversible oxygen reduction reaction and evolution reaction (ORR & OER). Here a new class of bifunctional oxygen electrocatalysts has been developed based on ultrafine transition metal-oxide nanoparticles (NPs), such as NiO, FeO or NiFeO, embedded in an amorphous MnOx shell, where the embedded NP core contributes to the high OER activity and the porous amorphous MnOx shell functions as an effective ORR catalyst as well as providing effective structural confinement to the metal-oxide NP core. The best performance was obtained for NiFeO@MnOx, exhibiting a potential gap, ?E, of 0.798 V to achieve a current of 3 mA cm-2 for the ORR and 5 mA cm-2 for the OER in 0.1 M KOH solution, better than that of Ir/C (0.924 V) and Pt/C (1.031 V). Most importantly, NiFeO@MnOx shows superior stability due to the outstanding structural confinement effect of the amorphous MnOx, achieving a ?E of 0.881 V after 300 cycles, outperforming 1.093 V obtained for the state-of-the-art Ir-Pt/C oxygen electrocatalysts.

dc.publisherR S C Publications
dc.titleA class of transition metal-oxide@MnO<inf>: X</inf> core-shell structured oxygen electrocatalysts for reversible O<inf>2</inf> reduction and evolution reactions
dc.typeJournal Article
dcterms.source.volume4
dcterms.source.number36
dcterms.source.startPage13881
dcterms.source.endPage13889
dcterms.source.issn2050-7488
dcterms.source.titleJournal of Materials Chemistry A
curtin.departmentFuels and Energy Technology Institute
curtin.accessStatusFulltext not available


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record