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- W2918514417 abstract "We demonstrate a simple, single-step and scalable synthesis of edge-nitrogenated graphene nanosheets (E-N-GNS) through thermal exfoliation of graphite platelet nanofibers (GPNF) in the presence of melamine. This material was characterized using different physical characterization techniques which divulges that, the edges are selectively functionalised with pyridinic and pyrrolic type nitrogens leading to the formation of E-N-GNS. Further, the electrocatalytic activity of E-N-GNS towards oxygen reduction reaction (ORR) in alkaline medium was studied using electrochemical techniques to reveal superior electrocatalytic activity of E-N-GNS towards ORR than that of GPNF, perhaps due to the incorporation of N at the edges. The cyclic voltammetry (CV), however, shows a 50 mV and 71 mV positive shift in the onset and peak potentials respectively, which in combination with the rotating ring disk electrode (RRDE) results suggest that ORR follows a direct four electron transfer path on E-N-GNS in comparison with a two electron path on GPNF modified electrodes. This E-N-GNS also shows superior stability for 5000 cycles along with a high methanol-tolerance and durability than that of benchmark ORR electrocatalyst Pt/C (20%) to suggest its potential applications in fuel cells and metal-air batteries." @default.
- W2918514417 created "2019-03-11" @default.
- W2918514417 creator A5005269888 @default.
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- W2918514417 creator A5034933501 @default.
- W2918514417 creator A5044704764 @default.
- W2918514417 creator A5047361415 @default.
- W2918514417 date "2019-06-01" @default.
- W2918514417 modified "2023-10-16" @default.
- W2918514417 title "Solid-state thermal exfoliation of graphite nano-fibers to edge-nitrogenized graphene nanosheets for oxygen reduction reaction" @default.
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- W2918514417 doi "https://doi.org/10.1016/j.jcis.2019.02.095" @default.
- W2918514417 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30870731" @default.
- W2918514417 hasPublicationYear "2019" @default.
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