Preparation and characterization of Pt/C and PtRu/C electrocatalysts for direct ethanol fuel cells

Zhaolin Liu; Xing Yi Ling; Xiaodi Su; Jim Yang Lee; Leong Ming Gan

doi:10.1016/j.jpowsour.2005.02.009

Preparation and characterization of Pt/C and PtRu/C electrocatalysts for direct ethanol fuel cells

Zhaolin Liu^*, Xing Yi Ling, Xiaodi Su, Jim Yang Lee, Leong Ming Gan

^*Corresponding author for this work

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

133 Citations (Scopus)

Abstract

Nano-sized Pt and PtRu colloids are prepared by a microwave-assisted polyol process, and transferred to a toluene solution of decanthiol. Vulcan XC-72 is then added to the toluene solution to adsorb the thiolated Pt and PtRu colloids. Transmission electron microscopy examinations show nearly spherical particles and narrow size distributions for both supported and unsupported metals. The carbon-supported Pt and PtRu nanoparticles are activated by thermal treatment to remove the thiol stabilizing shell. All Pt and PtRu catalysts (except Pt ₂₃Ru₇₇) give the X-ray diffraction pattern of a face-centered cubic (fcc) crystal structure, whereas the Pt₂₃Ru ₇₇ alloy is more typical of the hexagonal close packed (hcp) structure. The electro-oxidation of liquid ethanol on these catalysts is investigated at room temperature by cyclic voltammetry. The results demonstrate that the alloy catalyst is catalytically more active than pure platinum. Preliminary tests on a single cell of a direct ethanol fuel cell (DEFC) indicate that a Pt₅₂Ru₄₈/C anode catalyst gives the best electrocatalytic performance among all the carbon-supported Pt and PtRu catalysts.

Original language	English
Pages (from-to)	1-7
Number of pages	7
Journal	Journal of Power Sources
Volume	149
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jpowsour.2005.02.009
Publication status	Published - Sept 26 2005
Externally published	Yes

ASJC Scopus Subject Areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

Keywords

Cyclic voltammetry
Direct ethanol fuel cell
Microwave-assisted polyol process
Pt/C and PtRu/C electrocatalysts

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2005.02.009

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title = "Preparation and characterization of Pt/C and PtRu/C electrocatalysts for direct ethanol fuel cells",

abstract = "Nano-sized Pt and PtRu colloids are prepared by a microwave-assisted polyol process, and transferred to a toluene solution of decanthiol. Vulcan XC-72 is then added to the toluene solution to adsorb the thiolated Pt and PtRu colloids. Transmission electron microscopy examinations show nearly spherical particles and narrow size distributions for both supported and unsupported metals. The carbon-supported Pt and PtRu nanoparticles are activated by thermal treatment to remove the thiol stabilizing shell. All Pt and PtRu catalysts (except Pt 23Ru77) give the X-ray diffraction pattern of a face-centered cubic (fcc) crystal structure, whereas the Pt23Ru 77 alloy is more typical of the hexagonal close packed (hcp) structure. The electro-oxidation of liquid ethanol on these catalysts is investigated at room temperature by cyclic voltammetry. The results demonstrate that the alloy catalyst is catalytically more active than pure platinum. Preliminary tests on a single cell of a direct ethanol fuel cell (DEFC) indicate that a Pt52Ru48/C anode catalyst gives the best electrocatalytic performance among all the carbon-supported Pt and PtRu catalysts.",

keywords = "Cyclic voltammetry, Direct ethanol fuel cell, Microwave-assisted polyol process, Pt/C and PtRu/C electrocatalysts",

author = "Zhaolin Liu and Ling, {Xing Yi} and Xiaodi Su and Lee, {Jim Yang} and Gan, {Leong Ming}",

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T1 - Preparation and characterization of Pt/C and PtRu/C electrocatalysts for direct ethanol fuel cells

AU - Liu, Zhaolin

AU - Ling, Xing Yi

AU - Su, Xiaodi

AU - Lee, Jim Yang

AU - Gan, Leong Ming

PY - 2005/9/26

Y1 - 2005/9/26

N2 - Nano-sized Pt and PtRu colloids are prepared by a microwave-assisted polyol process, and transferred to a toluene solution of decanthiol. Vulcan XC-72 is then added to the toluene solution to adsorb the thiolated Pt and PtRu colloids. Transmission electron microscopy examinations show nearly spherical particles and narrow size distributions for both supported and unsupported metals. The carbon-supported Pt and PtRu nanoparticles are activated by thermal treatment to remove the thiol stabilizing shell. All Pt and PtRu catalysts (except Pt 23Ru77) give the X-ray diffraction pattern of a face-centered cubic (fcc) crystal structure, whereas the Pt23Ru 77 alloy is more typical of the hexagonal close packed (hcp) structure. The electro-oxidation of liquid ethanol on these catalysts is investigated at room temperature by cyclic voltammetry. The results demonstrate that the alloy catalyst is catalytically more active than pure platinum. Preliminary tests on a single cell of a direct ethanol fuel cell (DEFC) indicate that a Pt52Ru48/C anode catalyst gives the best electrocatalytic performance among all the carbon-supported Pt and PtRu catalysts.

AB - Nano-sized Pt and PtRu colloids are prepared by a microwave-assisted polyol process, and transferred to a toluene solution of decanthiol. Vulcan XC-72 is then added to the toluene solution to adsorb the thiolated Pt and PtRu colloids. Transmission electron microscopy examinations show nearly spherical particles and narrow size distributions for both supported and unsupported metals. The carbon-supported Pt and PtRu nanoparticles are activated by thermal treatment to remove the thiol stabilizing shell. All Pt and PtRu catalysts (except Pt 23Ru77) give the X-ray diffraction pattern of a face-centered cubic (fcc) crystal structure, whereas the Pt23Ru 77 alloy is more typical of the hexagonal close packed (hcp) structure. The electro-oxidation of liquid ethanol on these catalysts is investigated at room temperature by cyclic voltammetry. The results demonstrate that the alloy catalyst is catalytically more active than pure platinum. Preliminary tests on a single cell of a direct ethanol fuel cell (DEFC) indicate that a Pt52Ru48/C anode catalyst gives the best electrocatalytic performance among all the carbon-supported Pt and PtRu catalysts.

KW - Cyclic voltammetry

KW - Direct ethanol fuel cell

KW - Microwave-assisted polyol process

KW - Pt/C and PtRu/C electrocatalysts

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Preparation and characterization of Pt/C and PtRu/C electrocatalysts for direct ethanol fuel cells

Abstract

ASJC Scopus Subject Areas

Keywords

UN SDGs

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