A proper amount of carbon nanotubes for improving the performance of Pt-Ru/C catalysts for methanol electro-oxidation

Ching Fa Chi, Ming-Chang Yang, Hung Shan Weng

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

This study aims to improve the performance of the anode catalyst in a direct methanol fuel cell by using carbon black (XC) and mesoporous carbon (MC) as supporting materials for preparing Pt-Ru/XC and Pt-Ru/MC catalysts. This study investigates the effect of adding different amounts of bare carbon nanotubes (CNTs) or carbon nanotubes impregnated with Pt and Ru (abbreviated as Pt-Ru/CNT, containing 10 wt.% Pt and Ru) to the prepared catalysts. Experimental results reveal that 10 wt.% Pt-Ru/C with carbon black and mesoporous carbon prepared by the multiple impregnation method had smaller Pt-Ru grain sizes and a better dispersion or carbon supports due to low precursor concentrations in each impregnation. These, in turn, achieved better electro-catalytic performance for methanol oxidation. Adding CNTs or Pt-Ru/CNT to Pt-Ru/XC and Pt-Ru/MC obviously improves their electro-catalytic characteristics. The appropriate amounts of bare CNT and Pt-Ru/CNT added to Pt-Ru/XC and Pt-Ru/MC catalysts are 5% and 20%, respectively. The resulting catalysts (both containing 10 wt.% Pt and Ru) produce activities similar to those of the E-TEK Pt-Ru/C catalyst containing 20 wt.% Pt and Ru.

Original languageEnglish
Pages (from-to)462-469
Number of pages8
JournalJournal of Power Sources
Volume193
Issue number2
DOIs
Publication statusPublished - 2009 Sep 5

Fingerprint

Carbon Nanotubes
Electrooxidation
Methanol
Carbon nanotubes
methyl alcohol
carbon nanotubes
Carbon
catalysts
oxidation
Catalysts
carbon
Soot
Carbon black
Impregnation
Direct methanol fuel cells (DMFC)
Anodes
fuel cells
low concentrations
anodes
grain size

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "This study aims to improve the performance of the anode catalyst in a direct methanol fuel cell by using carbon black (XC) and mesoporous carbon (MC) as supporting materials for preparing Pt-Ru/XC and Pt-Ru/MC catalysts. This study investigates the effect of adding different amounts of bare carbon nanotubes (CNTs) or carbon nanotubes impregnated with Pt and Ru (abbreviated as Pt-Ru/CNT, containing 10 wt.{\%} Pt and Ru) to the prepared catalysts. Experimental results reveal that 10 wt.{\%} Pt-Ru/C with carbon black and mesoporous carbon prepared by the multiple impregnation method had smaller Pt-Ru grain sizes and a better dispersion or carbon supports due to low precursor concentrations in each impregnation. These, in turn, achieved better electro-catalytic performance for methanol oxidation. Adding CNTs or Pt-Ru/CNT to Pt-Ru/XC and Pt-Ru/MC obviously improves their electro-catalytic characteristics. The appropriate amounts of bare CNT and Pt-Ru/CNT added to Pt-Ru/XC and Pt-Ru/MC catalysts are 5{\%} and 20{\%}, respectively. The resulting catalysts (both containing 10 wt.{\%} Pt and Ru) produce activities similar to those of the E-TEK Pt-Ru/C catalyst containing 20 wt.{\%} Pt and Ru.",
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A proper amount of carbon nanotubes for improving the performance of Pt-Ru/C catalysts for methanol electro-oxidation. / Chi, Ching Fa; Yang, Ming-Chang; Weng, Hung Shan.

In: Journal of Power Sources, Vol. 193, No. 2, 05.09.2009, p. 462-469.

Research output: Contribution to journalArticle

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