Poly(1-vinylimidazole)/Pd-impregnated Nafion for direct methanol fuel cell applications

Ai Hua Tian, Ji Young Kim, Jin Y. Shi, Keon Kim

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Nafion is modified by incorporating poly(1-vinylimidazole)/Pd composites into the ion cluster channels of the membrane. The poly(1-vinylimidazole)/Pd-impregnated (PVI/Pd-impregnated) membranes is characterized by means of X-ray photoelectron spectroscopy (XPS), proton conductivity and methanol permeability measurements and compared with those of the untreated Nafion. The dependence of the membrane proton conductivity and methanol permeability on the poly(1-vinylimidazole) (PVI) and palladium contents in the PVI/Pd-impregnated Nafion is studied. The performance of the cells employing the PVI/Pd-impregnated Nafion is evaluated using a direct methanol fuel cell (DMFC) unit cell. It is found that the best cell performance is obtained when Nafion is impregnated with the PVI/Pd composite solution for 20 h. This result suggests that there exists an optimum content of palladium and PVI in the modified membrane to obtain a high-proton conductivity and low-methanol permeability that result in a high-cell performance.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalJournal of Power Sources
Volume183
Issue number1
DOIs
Publication statusPublished - 2008 Aug 15

Fingerprint

Direct methanol fuel cells (DMFC)
fuel cells
Proton conductivity
methyl alcohol
membranes
Membranes
permeability
Methanol
cells
conductivity
Palladium
protons
palladium
composite materials
Composite materials
Ion Channels
X ray photoelectron spectroscopy
photoelectron spectroscopy
perfluorosulfonic acid
poly(1-vinylimidazole)

Keywords

  • Direct methanol fuel cell
  • Methanol crossover
  • Modified Nafion
  • Palladium
  • Poly(1-vinylimidazole)

ASJC Scopus subject areas

  • Electrochemistry
  • Energy (miscellaneous)
  • Fuel Technology
  • Materials Chemistry

Cite this

Poly(1-vinylimidazole)/Pd-impregnated Nafion for direct methanol fuel cell applications. / Tian, Ai Hua; Kim, Ji Young; Shi, Jin Y.; Kim, Keon.

In: Journal of Power Sources, Vol. 183, No. 1, 15.08.2008, p. 1-7.

Research output: Contribution to journalArticle

Tian, Ai Hua ; Kim, Ji Young ; Shi, Jin Y. ; Kim, Keon. / Poly(1-vinylimidazole)/Pd-impregnated Nafion for direct methanol fuel cell applications. In: Journal of Power Sources. 2008 ; Vol. 183, No. 1. pp. 1-7.
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