Performance of membrane electrode assemblies based on proton exchange membranes prepared by pre-irradiation induced grafting

Jingye Li*, Akio Matsuura, Tomoyuki Kakigi, Takaharu Miura, Akihiro Oshima, Masakazu Washio

*この研究の対応する著者

研究成果: Article査読

23 被引用数 (Scopus)

抄録

Proton exchange membranes (PEMs) were prepared by pre-irradiation induced grafting of styrene (S) or styrene/divinylbenzene (S/DVB) into the radiation-crosslinked polytetrafluoroethylene (RX-PTFE) films and then sulfonated. The thicknesses of the obtained PEMs were lower than 20 μm and the ion exchange capacity (IEC) values were around 2 meq g-1. The surfaces of the PEMs and carbon electrodes were coated with Nafion® dispersion, and then membrane electrode assembles (MEAs) were prepared by hot-pressing them together. A MEA based on a Nafion® 112 membrane was also prepared under same procedure for comparison. The performances of the MEAs in a single cell were tested under different cell temperatures and humidifications. Electrochemical impedance spectra (EIS) were measured with ac frequencies which ranged from 100 kHz to 1 Hz at a dc density of 0.5 A cm-2. The obtained impedance curves in Nyquist representation were semicircular.

本文言語English
ページ(範囲)99-105
ページ数7
ジャーナルJournal of Power Sources
161
1
DOI
出版ステータスPublished - 2006 10 20

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • エネルギー工学および電力技術
  • 物理化学および理論化学
  • 電子工学および電気工学

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