Electrospinning Janus Type CoOx/C Nanofibers as Electrocatalysts for Oxygen Reduction Reaction

Xueyuan Cao; Jianping Deng; Kai Pan

doi:10.1007/s42765-020-00033-z

Advanced Fiber Materials ›› 2020, Vol. 2 ›› Issue (2) : 85 -92. DOI: 10.1007/s42765-020-00033-z

Research Article

Electrospinning Janus Type CoO_x/C Nanofibers as Electrocatalysts for Oxygen Reduction Reaction

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¹State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, 100029, Beijing, China

^c pankai@mail.buct.edu.cn

Xueyuan Cao

studied undergraduate at the College of Polymer Science and Engineering, Sichuan University, and postgraduate at the College of Materials Science and Engineering, Beijing University of Chemical Technology. Her research focus on the preparation and application of electrostatic spinning nanofibers and graphene aerogel materials.

Dr. Jianping Deng

is currently a professor at Beijing University of Chemical Technology (BUCT, China). His current research interests cover design and synthesis of chiral helical polymers and bio-based polymers; preparation and application of polymeric nanomaterials; and design and construction of smart structures and materials.

Dr. Kai Pan

is a professor of the College of Materials Science and Engineering, Beijing University of Chemical Technology, received the degree of undergraduate, postgraduate and PhD in College of Polymer Science and Engineering at Sichuan University. He entered the College of Materials Science and Engineering at Beijing University of Chemical Technology in 2007, his main research directions include: (1) Structure and function design of electrospun nanofibers; (2) Preparation and application research of functional nanocomposite materials; (3) Design, preparation and application of new polyamide resins.

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Abstract

Nanofibers with unique structures and multiple components have attracted more and more attention, which could combine multi-functions in one entity. Janus-type biphasic nanofibers with unique structure can be quickly obtained by electrospinning technology. We produced CoO_x/C nanofibers with Janus structure by self-made side-by-side electrospinning spinneret, combined with electrospinning technology and heat treatment. CoO_x/C nanofibers had a large amount of graphitic carbon distributed on one half of the Janus nanofiber, and CoO_x/C nanoparticles were embedded in the other half of the Janus nanofiber and distributed uniformly. CoO_x/C acted as ORR catalysis, and graphitic carbon, pridinc-N and CoO_x in CoO_x/C had a synergistic effect on their catalytic activity. The results confirmed that CoO_x/C was dominated by four-electron pathway under alkaline conditions, and the Tafel slope was lower than that of commercial Pt/C catalysts. The preparation method of this work is simple and easy, the structure is controllable, and the composition is adjustable, which provides a feasible way for preparing Janus structure nanofibers with different functions.

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Xueyuan Cao, Jianping Deng, Kai Pan. Electrospinning Janus Type CoO_x/C Nanofibers as Electrocatalysts for Oxygen Reduction Reaction. Advanced Fiber Materials, 2020, 2(2): 85-92 DOI:10.1007/s42765-020-00033-z