Enhanced oxygen reduction activities of pt supported on nitrogen-doped carbon nanocapsules

Sangaraju Shanmugam, Jakkid Sanetuntikul, Toshiyuki Momma, Tetsuya Osaka

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The nitrogen-doped carbon nanocapsules (NCNCs) were explored as catalyst support for oxygen reduction reaction (ORR) in acid electrolyte. The deposition of Pt particles on NCNCs support was characterized using various physico-chemical techniques, such as scanning electron microscope, transmission electron microscope, X-ray diffraction, and X-ray photoelectron spectroscopy. The high resolution transmission electron microscopy reveals that Pt particles are uniformly dispersed onto the NCNCs and particles size of about 2.2 nm was observed. The electrochemical ORR activities of the Pt supported on NCNCs catalysts were studied and compared with a commercial catalyst. Pt/NCNC showed enhanced ORR activity and better stability than a commercial Pt/C catalyst. The enhanced performance of Pt supported NCNCs can be attributed to the better dispersion and utilization of Pt nanoparticles.

Original languageEnglish
Pages (from-to)41-48
Number of pages8
JournalElectrochimica Acta
Volume137
DOIs
Publication statusPublished - 2014 Aug 10

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Keywords

  • Electrocatalyst
  • Fuel cells
  • Nitrogen-doped Carbon
  • Oxygen reduction
  • Pt nanoparticles

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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