Oxygen partial pressures on gas-diffusion layer surface and gas-flow channel wall in polymer electrolyte fuel cell during power generation studied by visualization technique combined with numerical simulation

Yuta Ishigami, Wihatmoko Waskitoaji, Masakazu Yoneda, Kenji Takada, Tsuyoshi Hyakutake, Takeo Suga, Makoto Uchida, Yuzo Nagumo, Junji Inukai*, Hiroyuki Nishide, Masahiro Watanabe

*この研究の対応する著者

研究成果査読

14 被引用数 (Scopus)

抄録

Visualization of the oxygen partial pressures was carried out at the surface of a gas diffusion layer (GDL) for the first time together with the upper part of the gas-flow channel of the cathode of a running polymer electrolyte fuel cell (PEFC) using two different oxygen-sensitive luminescent dye films. The visualized distributions of the oxygen partial pressures at the GDL and the upper gas-flow channel during the PEFC operation were very different in a conventional test cell. The change in the distribution of the oxygen partial pressures was observed by changing the oxygen utilization, which should be connected with the reactive locations in the membrane-electrode assembly (MEA). A numerical calculation was carried out to understand the distributions of water and current density inside the MEA. The water distribution inside the MEA was confirmed to strongly affect the distributions of the current density and the oxygen /partial pressure.

本文言語English
ページ(範囲)556-564
ページ数9
ジャーナルJournal of Power Sources
269
DOI
出版ステータスPublished - 2014 12 10

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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