Pt-Ru and Pt-Ru-P/carbon nanocomposites: Synthesis, characterization, and unexpected performance as direct methanol fuel cell (DMFC) anode catalysts

William D. King; James D. Corn; Oliver J. Murphy; Deborah L. Boxall; Edward A. Kenik; Krzvsztof C. Kwiatkowski; Stuart R. Stock; C. M. Lukehart

doi:10.1021/jp030052l

Pt-Ru and Pt-Ru-P/carbon nanocomposites: Synthesis, characterization, and unexpected performance as direct methanol fuel cell (DMFC) anode catalysts

William D. King, James D. Corn, Oliver J. Murphy, Deborah L. Boxall, Edward A. Kenik, Krzvsztof C. Kwiatkowski, Stuart R. Stock, C. M. Lukehart^*

^*Corresponding author for this work

Cell & Developmental Biology

Research output: Contribution to journal › Article › peer-review

74 Scopus citations

Abstract

Six Pt-Ru/carbon nanocomposites have been prepared, using five different Pt,Ru-bimetallic precursors as sources of metal. Nanocomposites prepared from precursors lacking phosphorus contain Pt-Ru nanocrystals that are highly dispersed on the carbon support, as expected. However, nanocomposites prepared from precursors possessing phosphorus contain a mixture of face-centered-cubic Pt-Ru alloy nanocrystals and primitive-cubic nanocrystals of an interstitial ternary metal phosphide phase identified as PtRuP₂. Nanocomposites containing substantial amounts of nano-PtRuP₂ perform as well as a commercial Pt-Ru/carbon nanocomposite in the role of an anode catalyst in direct methanol fuel cells. Although the exclusion of metal phosphide phases in Pt-Ru nanocomposite syntheses is best achieved by eliminating all sources of phosphorus, the presence of PtRuP₂ in such nanocomposites does not poison methanol electrooxidation. Investigation of the synthesis and electrocatalytic reactivity of pure PtRuE_x (where E denotes a main-group heteroelement) phases is suggested.

Original language	English (US)
Pages (from-to)	5467-5474
Number of pages	8
Journal	Journal of Physical Chemistry B
Volume	107
Issue number	23
DOIs	https://doi.org/10.1021/jp030052l
State	Published - Jun 12 2003

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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title = "Pt-Ru and Pt-Ru-P/carbon nanocomposites: Synthesis, characterization, and unexpected performance as direct methanol fuel cell (DMFC) anode catalysts",

abstract = "Six Pt-Ru/carbon nanocomposites have been prepared, using five different Pt,Ru-bimetallic precursors as sources of metal. Nanocomposites prepared from precursors lacking phosphorus contain Pt-Ru nanocrystals that are highly dispersed on the carbon support, as expected. However, nanocomposites prepared from precursors possessing phosphorus contain a mixture of face-centered-cubic Pt-Ru alloy nanocrystals and primitive-cubic nanocrystals of an interstitial ternary metal phosphide phase identified as PtRuP2. Nanocomposites containing substantial amounts of nano-PtRuP2 perform as well as a commercial Pt-Ru/carbon nanocomposite in the role of an anode catalyst in direct methanol fuel cells. Although the exclusion of metal phosphide phases in Pt-Ru nanocomposite syntheses is best achieved by eliminating all sources of phosphorus, the presence of PtRuP2 in such nanocomposites does not poison methanol electrooxidation. Investigation of the synthesis and electrocatalytic reactivity of pure PtRuEx (where E denotes a main-group heteroelement) phases is suggested.",

author = "King, {William D.} and Corn, {James D.} and Murphy, {Oliver J.} and Boxall, {Deborah L.} and Kenik, {Edward A.} and Kwiatkowski, {Krzvsztof C.} and Stock, {Stuart R.} and Lukehart, {C. M.}",

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T2 - Synthesis, characterization, and unexpected performance as direct methanol fuel cell (DMFC) anode catalysts

AU - King, William D.

AU - Corn, James D.

AU - Murphy, Oliver J.

AU - Boxall, Deborah L.

AU - Kenik, Edward A.

AU - Kwiatkowski, Krzvsztof C.

AU - Stock, Stuart R.

AU - Lukehart, C. M.

PY - 2003/6/12

Y1 - 2003/6/12

N2 - Six Pt-Ru/carbon nanocomposites have been prepared, using five different Pt,Ru-bimetallic precursors as sources of metal. Nanocomposites prepared from precursors lacking phosphorus contain Pt-Ru nanocrystals that are highly dispersed on the carbon support, as expected. However, nanocomposites prepared from precursors possessing phosphorus contain a mixture of face-centered-cubic Pt-Ru alloy nanocrystals and primitive-cubic nanocrystals of an interstitial ternary metal phosphide phase identified as PtRuP2. Nanocomposites containing substantial amounts of nano-PtRuP2 perform as well as a commercial Pt-Ru/carbon nanocomposite in the role of an anode catalyst in direct methanol fuel cells. Although the exclusion of metal phosphide phases in Pt-Ru nanocomposite syntheses is best achieved by eliminating all sources of phosphorus, the presence of PtRuP2 in such nanocomposites does not poison methanol electrooxidation. Investigation of the synthesis and electrocatalytic reactivity of pure PtRuEx (where E denotes a main-group heteroelement) phases is suggested.

AB - Six Pt-Ru/carbon nanocomposites have been prepared, using five different Pt,Ru-bimetallic precursors as sources of metal. Nanocomposites prepared from precursors lacking phosphorus contain Pt-Ru nanocrystals that are highly dispersed on the carbon support, as expected. However, nanocomposites prepared from precursors possessing phosphorus contain a mixture of face-centered-cubic Pt-Ru alloy nanocrystals and primitive-cubic nanocrystals of an interstitial ternary metal phosphide phase identified as PtRuP2. Nanocomposites containing substantial amounts of nano-PtRuP2 perform as well as a commercial Pt-Ru/carbon nanocomposite in the role of an anode catalyst in direct methanol fuel cells. Although the exclusion of metal phosphide phases in Pt-Ru nanocomposite syntheses is best achieved by eliminating all sources of phosphorus, the presence of PtRuP2 in such nanocomposites does not poison methanol electrooxidation. Investigation of the synthesis and electrocatalytic reactivity of pure PtRuEx (where E denotes a main-group heteroelement) phases is suggested.

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Pt-Ru and Pt-Ru-P/carbon nanocomposites: Synthesis, characterization, and unexpected performance as direct methanol fuel cell (DMFC) anode catalysts

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