Core–shell Pd–P@Pt nanoparticles as efficient catalysts for electrooxidation of formic acid

Jing Xu, Ming Zhao, Shin ichi Yamaura, Tienan Jin, Naoki Asao

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Abstract: Tailoring the composition and structure is an effective approach for improving the properties of electrocatalysts in fuel cells. In this study, the core–shell Pd–P@Pt nanoparticles were synthesized using a seed-mediated growth method and applied to the formic acid oxidation reaction like electrocatalysts. The core–shell structure was confirmed by transmission electron microscopy, elemental mapping analyses, energy-dispersive X-ray spectroscopy line scan, inductively coupled plasma mass spectrometry, and X-ray photoelectron spectroscopy. The catalytic activity and durability were evaluated by cyclic voltammetry, electrochemically active surface area loss, and chronoamperometry. The obtained particles exhibit higher catalytic activity and durability compared to those of Pt/C and Pt black commercial reference catalysts due to the synergistic effect between the Pd–P core and the Pt shell. In addition, the Pt shell inhibits the corrosion of Pd in the acidic solution, resulting in good stability. Graphical Abstract: [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1109-1118
Number of pages10
JournalJournal of Applied Electrochemistry
Volume46
Issue number11
DOIs
Publication statusPublished - 2016 Nov 1

Keywords

  • Electrochemistry
  • Formic acid
  • Fuel cells
  • Nanoparticles
  • Phosphorus

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry
  • Materials Chemistry

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