Aliphatic SPI charge-transfer complex hybrid films for high temperature polymer electrolyte membrane fuel cells

Research output: Contribution to journalArticle

Abstract

A new method to synthesize polymer electrolyte membranes based on charge-transfer (CT) complexes for high temperature fuel cells is investigated. Aliphatic sulfonated polyimide (SPI) CT complex hybrid films are prepared. Aliphatic units are introduced into the SPI main chain to increase the elasticity compared with aromatic SPI films. Electron-donating compounds are included to form a CT complex, resulting in improved control over mechanical strength, water uptake, and thermal stability. The resulting thermal properties of the SPI CT films are sufficient to operate at elevated temperature (up to 120 °C), and the proton conductivity is comparable to that of Nafion 115. These films are thus promising alternative membranes for high temperature polymer electrolyte fuel cell applications.

Original languageEnglish
Article number46087
JournalJournal of Applied Polymer Science
Volume135
Issue number14
DOIs
Publication statusPublished - Apr 10 2018

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Proton exchange membrane fuel cells (PEMFC)
Polyimides
Charge transfer
Electrolytes
Fuel cells
Polymers
Membranes
Temperature
Proton conductivity
Intermetallics
Strength of materials
Elasticity
Thermodynamic stability
Thermodynamic properties
Water

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

Cite this

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title = "Aliphatic SPI charge-transfer complex hybrid films for high temperature polymer electrolyte membrane fuel cells",
abstract = "A new method to synthesize polymer electrolyte membranes based on charge-transfer (CT) complexes for high temperature fuel cells is investigated. Aliphatic sulfonated polyimide (SPI) CT complex hybrid films are prepared. Aliphatic units are introduced into the SPI main chain to increase the elasticity compared with aromatic SPI films. Electron-donating compounds are included to form a CT complex, resulting in improved control over mechanical strength, water uptake, and thermal stability. The resulting thermal properties of the SPI CT films are sufficient to operate at elevated temperature (up to 120 °C), and the proton conductivity is comparable to that of Nafion 115. These films are thus promising alternative membranes for high temperature polymer electrolyte fuel cell applications.",
author = "Liana Christiani and Kazunari Sasaki and Masamichi Nishihara",
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AU - Sasaki, Kazunari

AU - Nishihara, Masamichi

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AB - A new method to synthesize polymer electrolyte membranes based on charge-transfer (CT) complexes for high temperature fuel cells is investigated. Aliphatic sulfonated polyimide (SPI) CT complex hybrid films are prepared. Aliphatic units are introduced into the SPI main chain to increase the elasticity compared with aromatic SPI films. Electron-donating compounds are included to form a CT complex, resulting in improved control over mechanical strength, water uptake, and thermal stability. The resulting thermal properties of the SPI CT films are sufficient to operate at elevated temperature (up to 120 °C), and the proton conductivity is comparable to that of Nafion 115. These films are thus promising alternative membranes for high temperature polymer electrolyte fuel cell applications.

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