Metal-free N-doped ultrafine carbon fibers from electrospun Polymers of Intrinsic microporosity (PIM-1) based fibers for oxygen reduction reaction

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buir.contributor.authorPatil, Bhushan
buir.contributor.authorSatılmış, Bekir
buir.contributor.authorUyar, Tamer
buir.contributor.orcidUyar, Tamer|0000-0002-3989-4481
dc.citation.spage227799en_US
dc.citation.volumeNumber451en_US
dc.contributor.authorPatil, Bhushan
dc.contributor.authorSatılmış, Bekir
dc.contributor.authorUyar, Tamer
dc.date.accessioned2021-02-25T07:21:02Z
dc.date.available2021-02-25T07:21:02Z
dc.date.issued2020
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractSynthesis of nitrogen-doped carbon fibers (CF) has been proved to be one of the most promising oxygen reduction reaction (ORR) catalysts which can replace the state-of-art Pt catalyst for non-noble metal-free light-weight devices. Polymers of Intrinsic Microporosity (PIM-1) is soluble in common organic solvents and can be tailored by functionalization owing to nitrile groups in the backbone. PIM-1 was functionalized to amide (hydrolyzed PIM-1), amine and amidoxime groups. The modified PIM-1s were electrospun into ultrafine fibers and pyrolyzed to obtain CF. The present article investigates the influence of different functional groups on the properties of PIM-1 based CF and their nitrogen-doping. Particularly, their ORR performance has been evaluated. Interestingly, CF from hydrolyzed PIM-1 have the highest pore volume with small pore size among the CF based on PIM-1, amine and amidoxime PIM-1. The amount of nitrogen-doping in these CF shows the trend according to the functional groups as PIM-1 > amine > amidoxime > amide. Among all these PIM-1 based CF; CF from hydrolyzed PIM-1 has the highest percentage of pyridinic and graphitic nitrogen, furthermore, electrocatalysis revealed that ORR processed through four-electron with the onset potential 985 mV vs. reversible hydrogen electrode (RHE) which is comparable with the standard Pt/C catalysts.en_US
dc.embargo.release2022-03-01
dc.identifier.doi10.1016/j.jpowsour.2020.227799en_US
dc.identifier.issn0378-7753
dc.identifier.urihttp://hdl.handle.net/11693/75579
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttps://dx.doi.org/10.1016/j.jpowsour.2020.227799en_US
dc.source.titleJournal of Power Sourcesen_US
dc.subjectPolymers of intrinsic microporosityen_US
dc.subjectCatalysten_US
dc.subjectElectrospinningen_US
dc.subjectCarbon nanofibersen_US
dc.subjectOxygen reduction reactionen_US
dc.titleMetal-free N-doped ultrafine carbon fibers from electrospun Polymers of Intrinsic microporosity (PIM-1) based fibers for oxygen reduction reactionen_US
dc.typeArticleen_US

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