Effect of tungs tenn PtRuW/C catalysts for promoting methanol electro-oxidation

Chang Soo Noh; Jung Min Sohn; Young Kwon Park

Effect of tungs tenn PtRuW/C catalysts for promoting methanol electro-oxidation

Chang Soo Noh, Jung Min Sohn, Young Kwon Park

School of Environmental Engineering

Jeonbuk National University

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

Abstract

PtRuW/C catalysts were prepared with the different molar ratios of Pt: Ru: W and their compositions were analyzed by energy dispersive X-ray (EDX). The uniform distribution of particles was observed using transmission electron microscopy (TEM). An average crystalline size of 3.5~5.5 nm was calculated based on x-ray diffraction (XRD) data. The electrochemical properties such as electrochemically active surface areas, current densities, specific activities and poisoning rates, were analyzed via CO stripping, linear sweep voltammetry and chronoamperometry. From the analysis, we observed that ternary alloy catalysts, except PtRu₂W₂/C, have higher current densities, specific activities and stabilities than those of commercial binary catalysts. Among all in-house catalysts, Pt₅Ru₄W/C showed the highest specific activity of 121.05 mA{dot operator}m^-2 and the lowest poisoning rate of 0.01%{dot operator}s^-1.

Original language	English
Pages (from-to)	561-566
Number of pages	6
Journal	Applied Chemistry for Engineering
Volume	23
Issue number	6
State	Published - Dec 2012

Keywords

Direct methanol fuel cell
Methanol electro-oxidation
Ptruw
Ternary catalyst
Tungsten effect

Cite this

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title = "Effect of tungs tenn PtRuW/C catalysts for promoting methanol electro-oxidation",

abstract = "PtRuW/C catalysts were prepared with the different molar ratios of Pt: Ru: W and their compositions were analyzed by energy dispersive X-ray (EDX). The uniform distribution of particles was observed using transmission electron microscopy (TEM). An average crystalline size of 3.5~5.5 nm was calculated based on x-ray diffraction (XRD) data. The electrochemical properties such as electrochemically active surface areas, current densities, specific activities and poisoning rates, were analyzed via CO stripping, linear sweep voltammetry and chronoamperometry. From the analysis, we observed that ternary alloy catalysts, except PtRu2W2/C, have higher current densities, specific activities and stabilities than those of commercial binary catalysts. Among all in-house catalysts, Pt5Ru4W/C showed the highest specific activity of 121.05 mA{dot operator}m-2 and the lowest poisoning rate of 0.01%{dot operator}s-1.",

keywords = "Direct methanol fuel cell, Methanol electro-oxidation, Ptruw, Ternary catalyst, Tungsten effect",

author = "Noh, {Chang Soo} and Sohn, {Jung Min} and Park, {Young Kwon}",

year = "2012",

month = dec,

language = "English",

volume = "23",

pages = "561--566",

journal = "Applied Chemistry for Engineering",

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TY - JOUR

T1 - Effect of tungs tenn PtRuW/C catalysts for promoting methanol electro-oxidation

AU - Noh, Chang Soo

AU - Sohn, Jung Min

AU - Park, Young Kwon

PY - 2012/12

Y1 - 2012/12

N2 - PtRuW/C catalysts were prepared with the different molar ratios of Pt: Ru: W and their compositions were analyzed by energy dispersive X-ray (EDX). The uniform distribution of particles was observed using transmission electron microscopy (TEM). An average crystalline size of 3.5~5.5 nm was calculated based on x-ray diffraction (XRD) data. The electrochemical properties such as electrochemically active surface areas, current densities, specific activities and poisoning rates, were analyzed via CO stripping, linear sweep voltammetry and chronoamperometry. From the analysis, we observed that ternary alloy catalysts, except PtRu2W2/C, have higher current densities, specific activities and stabilities than those of commercial binary catalysts. Among all in-house catalysts, Pt5Ru4W/C showed the highest specific activity of 121.05 mA{dot operator}m-2 and the lowest poisoning rate of 0.01%{dot operator}s-1.

AB - PtRuW/C catalysts were prepared with the different molar ratios of Pt: Ru: W and their compositions were analyzed by energy dispersive X-ray (EDX). The uniform distribution of particles was observed using transmission electron microscopy (TEM). An average crystalline size of 3.5~5.5 nm was calculated based on x-ray diffraction (XRD) data. The electrochemical properties such as electrochemically active surface areas, current densities, specific activities and poisoning rates, were analyzed via CO stripping, linear sweep voltammetry and chronoamperometry. From the analysis, we observed that ternary alloy catalysts, except PtRu2W2/C, have higher current densities, specific activities and stabilities than those of commercial binary catalysts. Among all in-house catalysts, Pt5Ru4W/C showed the highest specific activity of 121.05 mA{dot operator}m-2 and the lowest poisoning rate of 0.01%{dot operator}s-1.

KW - Direct methanol fuel cell

KW - Methanol electro-oxidation

KW - Ptruw

KW - Ternary catalyst

KW - Tungsten effect

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M3 - Article

AN - SCOPUS:84944653078

SN - 1225-0112

VL - 23

SP - 561

EP - 566

JO - Applied Chemistry for Engineering

JF - Applied Chemistry for Engineering

IS - 6

ER -

Effect of tungs tenn PtRuW/C catalysts for promoting methanol electro-oxidation

Abstract

Keywords

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