Dramatic reduction of water crossover in direct methanol fuel cells by cathode humidification

Fuqiang Liu, Chao Yang Wang

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

As a key parameter in enabling the operation of high concentration methanol fuel cells, the water transport coefficient through the membrane must be reduced to between 0 and -1/6. We show that this coefficient can be lowered to -0.7 at 60°C and under common cathode flow conditions using fully humidified air. A previously developed membrane electrode assembly based on a Nafion 112 membrane was used. The present result gives rise to the possibility of achieving a water-neutral state for use of pure methanol, i.e., with the water crossover coefficient of -1/6, under temperatures much higher than 60°C and in active air-flowing direct methanol fuel cell systems with high power density.

Original languageEnglish (US)
Pages (from-to)B101-B102
JournalElectrochemical and Solid-State Letters
Volume12
Issue number6
DOIs
StatePublished - Apr 20 2009

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Direct methanol fuel cells (DMFC)
fuel cells
crossovers
Cathodes
methyl alcohol
cathodes
membranes
Membranes
Water
Methanol fuels
water
air
coefficients
Air
Methanol
radiant flux density
Fuel cells
assembly
transport properties
Electrodes

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

Cite this

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Dramatic reduction of water crossover in direct methanol fuel cells by cathode humidification. / Liu, Fuqiang; Wang, Chao Yang.

In: Electrochemical and Solid-State Letters, Vol. 12, No. 6, 20.04.2009, p. B101-B102.

Research output: Contribution to journalArticle

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