Nafion-Nafion/polyvinylidene fluoride-Nafion laminated polymer membrane for direct methanol fuel cells

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

The laminated composite polymer electrolyte membrane is prepared as a sandwich structure, i.e., Nafion-Nafion/polyvinylene difluoride (PVdF)-Nafion. The conductivity of the laminated membrane is 1.1×10-2Scm -1. The middle layer of PVdF/Nafion successfully blocks methanol cross-over. In tests in a direct methanol fuel cell (DMFC), all of the Nafion-Nafion/PVdF-Nafion membranes give higher power densities than with a Nafion membrane. The highest current density using a blend membrane with 20% PVdF at a constant cell voltage of 0.3V is 217.64mAcm-2 at 110°C. It is noteworthy that the Nafion-Nafion/PVdF-Nafion laminated membrane sustains high performance at temperatures above 130°C, whereas the performance of a Nafion membrane is drastically decreased.

Original languageEnglish
Pages (from-to)66-71
Number of pages6
JournalJournal of Power Sources
Volume135
Issue number1-2
DOIs
Publication statusPublished - 2004 Sep 3

Fingerprint

Direct methanol fuel cells (DMFC)
vinylidene
difluorides
fuel cells
fluorides
Polymers
methyl alcohol
membranes
Membranes
polymers
Sandwich structures
sandwich structures
Laminated composites
perfluorosulfonic acid
polyvinylidene fluoride
high current
radiant flux density
Methanol
Current density
Electrolytes

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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title = "Nafion-Nafion/polyvinylidene fluoride-Nafion laminated polymer membrane for direct methanol fuel cells",
abstract = "The laminated composite polymer electrolyte membrane is prepared as a sandwich structure, i.e., Nafion-Nafion/polyvinylene difluoride (PVdF)-Nafion. The conductivity of the laminated membrane is 1.1×10-2Scm -1. The middle layer of PVdF/Nafion successfully blocks methanol cross-over. In tests in a direct methanol fuel cell (DMFC), all of the Nafion-Nafion/PVdF-Nafion membranes give higher power densities than with a Nafion membrane. The highest current density using a blend membrane with 20{\%} PVdF at a constant cell voltage of 0.3V is 217.64mAcm-2 at 110°C. It is noteworthy that the Nafion-Nafion/PVdF-Nafion laminated membrane sustains high performance at temperatures above 130°C, whereas the performance of a Nafion membrane is drastically decreased.",
author = "Kim, {Hyun Jae} and Kim, {Hyun Jong} and Shul, {Yong Gun} and Han, {Hak Soo}",
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Nafion-Nafion/polyvinylidene fluoride-Nafion laminated polymer membrane for direct methanol fuel cells. / Kim, Hyun Jae; Kim, Hyun Jong; Shul, Yong Gun; Han, Hak Soo.

In: Journal of Power Sources, Vol. 135, No. 1-2, 03.09.2004, p. 66-71.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Nafion-Nafion/polyvinylidene fluoride-Nafion laminated polymer membrane for direct methanol fuel cells

AU - Kim, Hyun Jae

AU - Kim, Hyun Jong

AU - Shul, Yong Gun

AU - Han, Hak Soo

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AB - The laminated composite polymer electrolyte membrane is prepared as a sandwich structure, i.e., Nafion-Nafion/polyvinylene difluoride (PVdF)-Nafion. The conductivity of the laminated membrane is 1.1×10-2Scm -1. The middle layer of PVdF/Nafion successfully blocks methanol cross-over. In tests in a direct methanol fuel cell (DMFC), all of the Nafion-Nafion/PVdF-Nafion membranes give higher power densities than with a Nafion membrane. The highest current density using a blend membrane with 20% PVdF at a constant cell voltage of 0.3V is 217.64mAcm-2 at 110°C. It is noteworthy that the Nafion-Nafion/PVdF-Nafion laminated membrane sustains high performance at temperatures above 130°C, whereas the performance of a Nafion membrane is drastically decreased.

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