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

doi:10.1016/j.elecom.2006.04.019

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 journal › Article › peer-review

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 language	English (US)
Pages (from-to)	1106-1110
Number of pages	5
Journal	Electrochemistry Communications
Volume	8
Issue number	7
DOIs	https://doi.org/10.1016/j.elecom.2006.04.019
State	Published - Jul 2006
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Electrochemistry

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10.1016/j.elecom.2006.04.019

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

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.",

keywords = "Fuel cell, Magnetic switching, Methanol, Nickel particles, Oxygen, Pt-Ru alloy",

author = "Joseph Wang and Mustafa Musameh and Rawiwan Laocharoensuk and Olga Gonz{\'a}lez-Garc{\'i}a and Joshua Oni and Don Gervasio",

note = "Funding Information: This work was supported by grants from NSF (CHE 0506529 to J.W.) and from the Army Research Office (Grant 49394 to D.G.). M.M., R.L. and O.G.G. acknowledge fellowships from the Islamic Development Bank (IDB), and the Thai and Spanish Governments, respectively.",

year = "2006",

month = jul,

doi = "10.1016/j.elecom.2006.04.019",

language = "English (US)",

volume = "8",

pages = "1106--1110",

journal = "Electrochemistry Communications",

issn = "1388-2481",

publisher = "Elsevier Inc.",

number = "7",

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TY - JOUR

T1 - Pt/Ru-functionalized magnetic spheres for a magnetic-field stimulated methanol and oxygen redox processes

T2 - Towards on-demand activation of fuel cells

AU - Wang, Joseph

AU - Musameh, Mustafa

AU - Laocharoensuk, Rawiwan

AU - González-García, Olga

AU - Oni, Joshua

AU - Gervasio, Don

N1 - Funding Information: This work was supported by grants from NSF (CHE 0506529 to J.W.) and from the Army Research Office (Grant 49394 to D.G.). M.M., R.L. and O.G.G. acknowledge fellowships from the Islamic Development Bank (IDB), and the Thai and Spanish Governments, respectively.

PY - 2006/7

Y1 - 2006/7

N2 - 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.

AB - 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.

KW - Fuel cell

KW - Magnetic switching

KW - Methanol

KW - Nickel particles

KW - Oxygen

KW - Pt-Ru alloy

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DO - 10.1016/j.elecom.2006.04.019

M3 - Article

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SN - 1388-2481

VL - 8

SP - 1106

EP - 1110

JO - Electrochemistry Communications

JF - Electrochemistry Communications

IS - 7

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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