Pt/Ru-functionalized magnetic spheres for a magnetic-field stimulated methanol and oxygen redox processes: Towards on-demand activation of fuel cells

Joseph Wang, Mustafa Musameh, Rawiwan Laocharoensuk, Olga González-García, Joshua Oni, Don Gervasio

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Pt/Ru-functionalized magnetic spheres were used for a magnetic-field stimulated methanol oxidation and oxygen reduction processes. The electrocatalytic alloy magnetic particles were prepared by a galvanostatic co-deposition of platinum and ruthenium onto nickel spheres. The electrocatalytic oxidation of methanol and reduction of oxygen could be triggered by switching the position of an external magnet below the surface of the carbon electrode to confine the Pt/Ru-coated particles. The magnetic stimulation of the redox processes of methanol and oxygen allowed the reversible activation and deactivation of the operation of direct-methanol fuel cells. Such switching of fuel cells would enable on-demand power generation, for meeting the specific needs of power consuming units.

Original languageEnglish (US)
Pages (from-to)1106-1110
Number of pages5
JournalElectrochemistry Communications
Volume8
Issue number7
DOIs
StatePublished - Jul 1 2006
Externally publishedYes

Keywords

  • Fuel cell
  • Magnetic switching
  • Methanol
  • Nickel particles
  • Oxygen
  • Pt-Ru alloy

ASJC Scopus subject areas

  • Electrochemistry

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