期刊
ELECTROCHIMICA ACTA
卷 96, 期 -, 页码 225-229出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.02.097
关键词
Nitrogen-doped carbon; Submicrotube; Coaxial electrospinning; Oxygen reduction reaction
资金
- NSFC [51102064]
- Shenzhen Bureau of Science, Technology and Innovation Commission [JC201005260171A, JCYJ20120613134244467, CXZZ20120613141143842]
Nitrogen-doped carbon tubes (NCTs) with submicron diameters were synthesized by coaxial electrospinning and subsequent heat treatment in NH3 or N-2 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 N-2, the NH3-etched NCTs had a smaller diameter of about 350 nm and showed much better electrocatalytic activity for oxygen reduction reaction (ORR) in acid media. (C) 2013 Elsevier Ltd. All rights reserved.
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