Journal
APPLIED SURFACE SCIENCE
Volume 463, Issue -, Pages 767-774Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2018.08.231
Keywords
Chemical blowing; Oxygen reduction reaction; Carbon nanotubes; Electrocatalyst; Synergistic effect
Categories
Funding
- National Natural Science Foundation of China (NSFC) [21372088, 21271073, 51431001, 21875070]
- Guangdong Natural Science Foundation [2017A030312005, 2014GKXM011, 2014A030311004]
- Guangzhou Science Technology and Innovation Commission [201508020010]
- International Science AMP
- Technology Cooperation Program of China [2015DFA51750]
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High cost and supply shortage greatly limit the actual application of platinum (Pt)-based catalysts in oxygen reduction reaction (ORR). This study reports a top-down strategy for fabrication of iron-nitrogen co-doped carbon nanotubes (Fe-N-CNTs-800) electrocatalyst through metal salt-assisted polymer (polyvinylpyrrolidone) in situ chemical blowing and following by pyrolysis strategy. Newly-designed Fe-N-CNTs-800 catalysts possessed large specific surface area, high nitrogen content, and excellent structural stability. Compared with commercially available platinum carbon (Pt/C) electrocatalysts, the Fe-N-CNTs-800 catalysts exhibited outstanding catalytic performance toward ORR in alkaline. The synergistic effect between iron-nitrogen doped and porous nanotubes structures results in the higher catalytic activity, remarkable resistance to methanol, and good stability for Fe-N-CNT-800 catalyst. This work has certain guiding significance for the future design of nanostructure engineering and the fabrication of highly efficient inexpensive catalysts to substitute of Pt-based electrocatalysts in ORR.
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