Application of silica as a catalyst support at high concentrations of methanol for direct methanol fuel cells

Kidon Nam, Seongyop Lim, Sang Kyung Kim, Seong-Ho Yoon, Doo Hwan Jung

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Various silica particles were adopted as catalyst supports, and silica-supported PtRu catalysts were evaluated as catalysts for the anode of direct methanol fuel cells at methanol concentrations of 1-10 M through single cell tests. Compared to a carbon black supported Pt-Ru catalysts, the silica-supported Pt-Ru catalysts exhibited higher performance in MEA, especially with high concentration over 3 M, and the maximum power density reached to 90 mW cm -2 and 60 mW cm -2 with 5 M and 10 M, respectively, which were 1.5 and 3 times higher than the reference carbon black supported catalysts. It was found that the silica particles as a catalyst support have a significant effect on reduction of methanol crossover and control of fuel feeding. Such a high performance in the operation with high concentrations was confirmed in the long-term durability test.

Original languageEnglish
Pages (from-to)4619-4626
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number5
DOIs
Publication statusPublished - Mar 1 2012

Fingerprint

Direct methanol fuel cells (DMFC)
Catalyst supports
fuel cells
Methanol
methyl alcohol
Silica
silicon dioxide
catalysts
Carbon black
Catalysts
Anodes
Durability
carbon
durability
radiant flux density
crossovers
anodes
cells

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Application of silica as a catalyst support at high concentrations of methanol for direct methanol fuel cells. / Nam, Kidon; Lim, Seongyop; Kim, Sang Kyung; Yoon, Seong-Ho; Jung, Doo Hwan.

In: International Journal of Hydrogen Energy, Vol. 37, No. 5, 01.03.2012, p. 4619-4626.

Research output: Contribution to journalArticle

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