Pt-Ni Nanoparticle-Stacking Thin Film: Highly Active Electrocatalysts for Oxygen Reduction Reaction

Naoto Todoroki, Takashi Kato, Takehiro Hayashi, Shuntaro Takahashi, Toshimasa Wadayama

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

A novel nanoparticle-stacking thin film (NPSTF) of Pt-Ni alloy for highly active oxygen reduction reaction (ORR) electrocatalyst was synthesized. The Pt mass activity of the synthesized Pt-Ni NPSTF were 10-fold higher than commercial carbon-supported Pt catalysts. The remarkable ORR activity enhancement of the Pt-Ni NPSTF was attributed to the modified electronic properties of the surface Pt-enriched layers induced by underlying Ni atoms and to the increased active surface area achieved by stacking of Pt-Ni nanoparticles. (Chemical Equation Presented).

Original languageEnglish
Pages (from-to)2209-2212
Number of pages4
JournalACS Catalysis
Volume5
Issue number4
DOIs
Publication statusPublished - 2015 Apr 3

Keywords

  • Pt-based alloys
  • arc plasma deposition
  • oxygen reduction reaction
  • proton exchange membrane fuel cell
  • thin film catalysts

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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