Investigation of membrane electrode assembly (MEA) processing parameters on performance for wholly aromatic hydrocarbon-based proton exchange membranes

Abhishek Roy, Michael Anthony Hickner, Ozma Lane, J. E. McGrath

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The membrane electrode assembly (MEA) is well known to be the critical component of a proton exchange membrane fuel cell (PEMFC). The interface between the membrane and the electrodes plays a significant role in controlling overall performance and durability. Moreover, the processing parameters to produce MEA have a major influence on the interface and allow novel materials to be evaluated in high performance fuel cell devices. In this paper, several parameters influencing processing conditions for MEAs with membranes based on novel wholly aromatic polymers were investigated and optimized processing parameters are suggested. This paper demonstrates that the water content present in the copolymers during MEA fabrication significantly influences the nature of the interface and, consequently, fuel cell performance. The optimized fabrication temperature reflects viscoelastic behavior and appears to be close to the hydrated glass transition or α relaxation temperature of the copolymer. It is suggested to be a function of both water content, which can plasticize and reduce Tg, and molecular weight of the copolymer.

Original languageEnglish (US)
Pages (from-to)550-554
Number of pages5
JournalJournal of Power Sources
Volume191
Issue number2
DOIs
StatePublished - Jun 15 2009

Fingerprint

Aromatic Hydrocarbons
Aromatic hydrocarbons
Protons
Ion exchange
assembly
hydrocarbons
membranes
Membranes
Electrodes
electrodes
protons
Processing
Copolymers
fuel cells
copolymers
Water content
Fuel cells
moisture content
Aromatic polymers
Fabrication

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering

Cite this

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abstract = "The membrane electrode assembly (MEA) is well known to be the critical component of a proton exchange membrane fuel cell (PEMFC). The interface between the membrane and the electrodes plays a significant role in controlling overall performance and durability. Moreover, the processing parameters to produce MEA have a major influence on the interface and allow novel materials to be evaluated in high performance fuel cell devices. In this paper, several parameters influencing processing conditions for MEAs with membranes based on novel wholly aromatic polymers were investigated and optimized processing parameters are suggested. This paper demonstrates that the water content present in the copolymers during MEA fabrication significantly influences the nature of the interface and, consequently, fuel cell performance. The optimized fabrication temperature reflects viscoelastic behavior and appears to be close to the hydrated glass transition or α relaxation temperature of the copolymer. It is suggested to be a function of both water content, which can plasticize and reduce Tg, and molecular weight of the copolymer.",
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Investigation of membrane electrode assembly (MEA) processing parameters on performance for wholly aromatic hydrocarbon-based proton exchange membranes. / Roy, Abhishek; Hickner, Michael Anthony; Lane, Ozma; McGrath, J. E.

In: Journal of Power Sources, Vol. 191, No. 2, 15.06.2009, p. 550-554.

Research output: Contribution to journalArticle

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