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dc.contributor.authorKhan, K
dc.contributor.authorYan, X
dc.contributor.authorYu, Q
dc.contributor.authorBae, SH
dc.contributor.authorWhite, JJ
dc.contributor.authorLiu, J
dc.contributor.authorLiu, T
dc.contributor.authorSun, C
dc.contributor.authorKim, J
dc.contributor.authorCheng, HM
dc.contributor.authorWang, Y
dc.contributor.authorLiu, B
dc.contributor.authorAmine, K
dc.contributor.authorPan, X
dc.contributor.authorLuo, Z
dc.date.accessioned2021-10-11T06:26:24Z
dc.date.available2021-10-11T06:26:24Z
dc.date.issued2021
dc.identifier.issn2211-2855
dc.identifier.doi10.1016/j.nanoen.2021.106488
dc.identifier.urihttp://hdl.handle.net/10072/408818
dc.description.abstractThis work aims to obtain a fundamental understanding of active sites near stone-wales (SW) defects rich nitrogen-doped graphene (DG) with specific coordination of carbon atom rings. It reveals that the SW rich defects (e.g., pentagon (5), pentagon—octagon—pentagon (i.e. 585), or pentagon-heptagon-heptagon-pentagon (5775) rings, appears correspondingly with carbon rings that brought active sites during catalytic reactions. Moreover, we anchored dual isolated metallic atoms (Ni/Fe) on DG support via linkers (O/N) called NiFe-DG. X-ray absorption spectroscopy indicates Ni/Fe metal single atoms are embedded via Fe-N4 and Ni-N4 coordination on DG surfaces. It exhibits high catalytic activity for oxygen reduction reaction (ORR) with an onset potential of 0.97 V, a half-wave potential of 0.86 V, and diffusion current density of 5.7 mA cm− 2, which is at par with commercial Pt/C. The catalyst shows superior stability, retained 82% of the initial current density even after 12 h under an applied potential of 0.86 V. Similarly, the oxygen evolution reaction (OER) overpotential of 358 mV was achieved at 10 mA cm− 2 with a lower Tafel slope value (76 mV/dec) than commercial Pt/C. It maintains 85% stability for 12 h at a constant potential of 1.588 V, shows better stability than commercial Pt/C.
dc.description.peerreviewedYes
dc.languageen
dc.publisherElsevier BV
dc.relation.ispartofpagefrom106488
dc.relation.ispartofjournalNano Energy
dc.relation.ispartofvolume90
dc.subject.fieldofresearchNanotechnology
dc.subject.fieldofresearchMacromolecular and materials chemistry
dc.subject.fieldofresearchMaterials engineering
dc.subject.fieldofresearchEnvironmental engineering
dc.subject.fieldofresearchcode4018
dc.subject.fieldofresearchcode3403
dc.subject.fieldofresearchcode4016
dc.subject.fieldofresearchcode4011
dc.titleStone-Wales defect-rich carbon-supported dual-metal single atom sites for Zn-air batteries
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationKhan, K; Yan, X; Yu, Q; Bae, SH; White, JJ; Liu, J; Liu, T; Sun, C; Kim, J; Cheng, HM; Wang, Y; Liu, B; Amine, K; Pan, X; Luo, Z, Stone-Wales defect-rich carbon-supported dual-metal single atom sites for Zn-air batteries, Nano Energy, 2021, 90, pp. 106488
dc.date.updated2021-10-06T00:13:29Z
gro.hasfulltextNo Full Text
gro.griffith.authorWang, Yun


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