Visualization of Oxygen Partial Pressure and Numerical Simulation of a Running Polymer Electrolyte Fuel Cell with Straight Flow Channels to Elucidate Reaction Distributions

Katsuya Nagase, Haruki Motegi, Masakazu Yoneda, Yuzo Nagumo, Takeo Suga, Makoto Uchida, Junji Inukai, Hiroyuki Nishide, Masahiro Watanabe

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    Visualization of the oxygen partial pressure (pO(2)) was performed at the surface of a gas diffusion layer (GDL) and the upper part of the gas-flow channel of the cathode of an operating polymer electrolyte fuel cell (PEFC) with straight flow channels by using an oxygen-sensitive luminescent dye film. The gradient of pO(2) inside a channel was clearly observed, even on the GDL surface across the channel. A numerical simulation was performed to understand the reaction distributions inside the PEFC. By visualization and numerical simulation, the distributions of pO(2), the current density, water concentration, and temperature in the operating PEFC were obtained, and the relationships between the parameters were studied. Supersaturated water inside the cell was found both experimentally and computationally. pO(2) and the water concentration were concluded to be the two most important factors in determining the distribution of power generation.

    Original languageEnglish
    Pages (from-to)1495-1501
    Number of pages7
    JournalChemElectroChem
    Volume2
    Issue number10
    DOIs
    Publication statusPublished - 2015 Oct 1

    Keywords

    • Fuel cells
    • Gas diffusion layer
    • Numerical simulation
    • Oxygen
    • Straight gas-flow channel

    ASJC Scopus subject areas

    • Electrochemistry
    • Catalysis

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