Graphene supported Pt–Ni nanoparticles for oxygen reduction reaction in acidic electrolyte

Won kyo Suh, Pandian Ganesan, Byungrak Son, Hasuck Kim, Sangaraju Shanmugam

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

The design of high performance oxygen reduction reaction (ORR) electrocatalysts play an important role in the commercialization of polymer electrolyte membrane fuel cells. The morphology, structure, and composition of the support material significantly affect the catalytic activity of the fuel cell catalyst. In this work, we report a systematic and comparative study of the effects of the support morphology for Pt–Ni nanoparticles for the ORR. The effect of the support morphology on the electrocatalytic oxygen reduction reaction was investigated. Pt–Ni alloy catalysts were characterized using various physico-chemical techniques, such as scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Pt–Ni alloy nanoparticles were deposited uniformly on a graphene support and their oxygen reduction activities were evaluated in an acid electrolyte. The ORR activity of Pt–Ni supported on graphene was also compared with Pt–Ni supported on Vulcan carbon XC-72 and carbon nanotubes. The electrocatalytic activity and stability of Pt–Ni alloy catalysts were studied using cyclic voltammetry, linear sweep voltammetry, rotating disk electrode, and rotating ring disk electrode techniques. The results demonstrate that the graphene supported Pt–Ni catalyst showed the highest ORR activity among the three evaluated catalysts.

Original languageEnglish
Pages (from-to)12983-12994
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume41
Issue number30
DOIs
Publication statusPublished - Aug 10 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Fingerprint Dive into the research topics of 'Graphene supported Pt–Ni nanoparticles for oxygen reduction reaction in acidic electrolyte'. Together they form a unique fingerprint.

Cite this