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首页> 外文期刊>Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry >Porous nitrogen-doped carbon nanofibers as highly efficient metal-free electrocatalyst for oxygen reduction reaction
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Porous nitrogen-doped carbon nanofibers as highly efficient metal-free electrocatalyst for oxygen reduction reaction

机译：多孔氮掺杂碳纳米纤维作为高效的无金属氧还原反应电催化剂

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摘要

Three kinds of polymer blend of poly(methyl methacrylate) (PMMA)/polyacrylonitrile (PAN), polyvinylpyrrolidone (PVP)/PAN and cellulose acetate (CA)/PAN were converted into nitrogen-doped carbon nanofibers (NCNFs) by electrospinning combined with acid oxidation and NH_3 etching. The NCNFs showed excellent electrocatalytic performance for oxygen reduction reaction (ORR) in acid media, probably being attributed to the good hydrophilicity and wettability, porous fibrous structure, ultra thin diameter of less than 50 nm, more exposed edge planes of pyrolytic graphitic carbons, and high proportion of pyridinic and quaternary nitrogen. The developed NCNFs show great potential as metal-free electrocatalyst for ORR in acid environment.
机译：通过电纺丝与酸结合，将聚甲基丙烯酸甲酯（PMMA）/聚丙烯腈（PAN），聚乙烯吡咯烷酮（PVP）/ PAN和醋酸纤维素（CA）/ PAN的三种聚合物共混物转化为掺氮碳纳米纤维（NCNF）。氧化和NH_3蚀刻。 NCNF对酸性介质中的氧还原反应（ORR）表现出优异的电催化性能，这可能归因于良好的亲水性和润湿性，多孔纤维结构，小于50 nm的超薄直径，热解石墨碳的更多暴露边缘平面以及吡啶和季氮的比例很高。已开发的NCNFs在酸性环境中作为ORR的无金属电催化剂具有巨大潜力。

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