Electrocatalytic activity of nitrogen plasma treated vertically aligned carbon nanotube carpets towards oxygen reduction reaction

Palaniappan Subramanian, Asaf Cohen, Eti Teblum, Gilbert D. Nessim, Edward Bormasheko, Alex Schechter

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

We developed a simple and rapid procedure to prepare nitrogen-doped vertically aligned carbon nanotube carpets (VA-NCNTs). The VA-NCNTs were obtained by nitrogen plasma treatment of the vertically aligned multi-walled carbon nanotube carpets (VA-CNTs) directly grown on stainless steel substrates by chemical vapor deposition. This novel electrochemical interface reduces oxygen in lower overpotential under basic condition (onset potential at - 0.12 V vs. Ag/AgCl at pH 13) compared to untreated VA-CNTs (onset potential at - 0.22 V vs. Ag/AgCl at pH 13). The robustness of these nanostructures and ease of fabrication make VA-NCNTs promising non-platinum oxygen reduction catalysts that could be employed as cathode catalysts in real-time operation of alkaline fuel cell systems.

Original languageEnglish
Pages (from-to)42-46
Number of pages5
JournalElectrochemistry Communications
Volume49
DOIs
StatePublished - Dec 2014

Bibliographical note

Publisher Copyright:
© 2014, Elsevier Inc. All rights reserved.

Keywords

  • Carbon nanotube carpets
  • Catalysts
  • Chemical vapor deposition
  • Nitrogen plasma
  • Oxygen reduction

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