Effects of SiO₂ Nanoparticles Incorporated into Poly(Arylene Ether Sulfone Ketone) Multiblock Copolymer Electrolyte Membranes on Fuel Cell Performance at Low Humidity

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  • SAKAMOTO Masaru
    Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
  • NOHARA Shinji
    Clean Energy Research Center, University of Yamanashi Fuel Cell Nanomaterials Center, University of Yamanashi
  • MIYATAKE Kenji
    Clean Energy Research Center, University of Yamanashi Fuel Cell Nanomaterials Center, University of Yamanashi
  • UCHIDA Makoto
    Fuel Cell Nanomaterials Center, University of Yamanashi
  • WATANABE Masahiro
    Fuel Cell Nanomaterials Center, University of Yamanashi
  • UCHIDA Hiroyuki
    Clean Energy Research Center, University of Yamanashi Fuel Cell Nanomaterials Center, University of Yamanashi

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タイトル別名
  • Effects of SiO<sub>2</sub> Nanoparticles Incorporated into Poly(Arylene Ether Sulfone Ketone) Multiblock Copolymer Electrolyte Membranes on Fuel Cell Performance at Low Humidity

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抄録

To improve the performances of fuel cells at low humidity, we have prepared composite electrolyte membranes by incorporating SiO2 nanoparticles into poly(arylene ether sulfone ketone) (SPESK) membrane. SiO2 particles were able to be dispersed in SPESK highly uniformly on the nanometer scale by the use of a commercial SiO2–dimethylacetamide sol. The SiO2/SPESK cell exhibited improved I–E performance at 53% relative humidity (RH) and 80°C. It was found that such an improvement was due to the reduction of the ohmic resistance and the oxygen-transport overpotential at high current densities, probably because the SiO2 nanoparticles promoted the back-diffusion of water generated at the cathode catalyst layer toward the anode. Both the ohmic resistance and the oxygen-transport overpotential were reduced further by using a thin (ca. 12 µm) SiO2/SPESK membrane, resulting in remarkably high performances at 53% RH and 30% RH.

収録刊行物

  • Electrochemistry

    Electrochemistry 83 (3), 150-154, 2015

    公益社団法人　電気化学会

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