PtRu/C-Au/TiO2 electrocatalyst for a direct methanol fuel cell

Hyun Jong Kim, Do Young Kim, Haksoo Han, Yong Gun Shul

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

Au/TiO2 is added to a PtRu/C electrode to improve the performance of a direct methanol fuel cell (DMFC). A high-throughput-screening test is performed for the fast screening of the loading of Au/TiO2 on PtRu/C. The electrochemically-active surface area of PtRu/C-Au/TiO2 and PtRu/C is determined from cyclic voltammetry. In CO-stripping and methanol oxidation voltammetry, PtRu/C-Au/TiO2 exhibits better activity for CO and methanol oxidation than PtRu/C. The performance of the DMFC is also improved by addition of Au/TiO2 to the PtRu/C electrode. The CO adsorbed on Pt may move to the surface of the Au/TiO2 by the interaction between PtRu/C and Au/TiO2. The improved performance of the PtRu/C-Au/TiO2 catalyst is explained in terms of preferential oxidation of CO or CO-like poisoning species that are generated during the oxidation of methanol on PtRu/C.

Original languageEnglish
Pages (from-to)484-490
Number of pages7
JournalJournal of Power Sources
Volume159
Issue number1 SPEC. ISS.
DOIs
Publication statusPublished - 2006 Sep 13

Fingerprint

Direct methanol fuel cells (DMFC)
electrocatalysts
Electrocatalysts
Carbon Monoxide
fuel cells
methyl alcohol
Oxidation
Methanol
oxidation
Screening
screening
Electrodes
Voltammetry
electrodes
Cyclic voltammetry
poisoning
stripping
Throughput
Catalysts
catalysts

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

Kim, Hyun Jong ; Kim, Do Young ; Han, Haksoo ; Shul, Yong Gun. / PtRu/C-Au/TiO2 electrocatalyst for a direct methanol fuel cell. In: Journal of Power Sources. 2006 ; Vol. 159, No. 1 SPEC. ISS. pp. 484-490.
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PtRu/C-Au/TiO2 electrocatalyst for a direct methanol fuel cell. / Kim, Hyun Jong; Kim, Do Young; Han, Haksoo; Shul, Yong Gun.

In: Journal of Power Sources, Vol. 159, No. 1 SPEC. ISS., 13.09.2006, p. 484-490.

Research output: Contribution to journalArticle

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AB - Au/TiO2 is added to a PtRu/C electrode to improve the performance of a direct methanol fuel cell (DMFC). A high-throughput-screening test is performed for the fast screening of the loading of Au/TiO2 on PtRu/C. The electrochemically-active surface area of PtRu/C-Au/TiO2 and PtRu/C is determined from cyclic voltammetry. In CO-stripping and methanol oxidation voltammetry, PtRu/C-Au/TiO2 exhibits better activity for CO and methanol oxidation than PtRu/C. The performance of the DMFC is also improved by addition of Au/TiO2 to the PtRu/C electrode. The CO adsorbed on Pt may move to the surface of the Au/TiO2 by the interaction between PtRu/C and Au/TiO2. The improved performance of the PtRu/C-Au/TiO2 catalyst is explained in terms of preferential oxidation of CO or CO-like poisoning species that are generated during the oxidation of methanol on PtRu/C.

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