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Preparation of nitrogen-doped carbon submicrotubes by coaxial electrospinning and their electrocatalytic activity for oxygen reduction reaction in acid media

  • Yejun Qiu*
  • , Jing Yin
  • , Huiwen Hou
  • , Jie Yu
  • , Xinbing Zuo
  • *Corresponding author for this work
  • Harbin Institute of Technology (Shenzhen)
  • Shenzhen State High-tech Industrial Innovation Center

Research output: Contribution to journalArticlepeer-review

Abstract

Nitrogen-doped carbon tubes (NCTs) with submicron diameters were synthesized by coaxial electrospinning and subsequent heat treatment in NH 3 or N2 atmosphere. Polyacrylonitrile (PAN) and polyvinylidenedifluoride (PDVF) mixture solutions were used as the outer fluids during coaxial electrospinning, and after heat treatment PAN converted into nitrogen-doped carbon species, while PVDF decomposed and left some pores in the tube walls. In comparison with the NCTs treated in N2, the NH 3-etched NCTs had a smaller diameter of about 350 nm and showed much better electrocatalytic activity for oxygen reduction reaction (ORR) in acid media.

Original languageEnglish
Pages (from-to)225-229
Number of pages5
JournalElectrochimica Acta
Volume96
DOIs
StatePublished - 30 Apr 2013
Externally publishedYes

Keywords

  • Coaxial electrospinning
  • Nitrogen-doped carbon
  • Oxygen reduction reaction
  • Submicrotube

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