高温固体電解質燃料電池(SOFC)用正極としてのペロブスカイト型酸化物の研究 Sutdy of Perovskite Oxides as the Cathode for Solid Oxide Fuel Cell(SOFC)

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The perovskite type manganite systems, Ln<SUB>1-x</SUB>A<SUB>x</SUB>MO<SUB>3</SUB> (Ln=rare earth, A=Sr, Ca) were studied as the electrode materials for solid oxide fuel cells (SOFC). The highest cathodic activity was obtained for the La<SUB>1-x</SUB>Sr<SUB>x</SUB>CoO<SUB>3</SUB> electrode. The reactivity tests of La<SUB>1-x</SUB>A<SUB>x</SUB>MO<SUB>3</SUB> with yttria-stabilized zirconia (YSZ) showed that the formation of the pyrochlore Ln<SUB>2</SUB>Zr<SUB>2</SUB>O<SUB>7</SUB> decreases the electrode activity. However, this was suppressed for the perovskites having smaller lanthanoids than La, for example, for the Gd<SUB>1-x</SUB>A<SUB>x</SUB>MnO<SUB>3</SUB> and GdCoO<SUB>3</SUB> systems. No reaction product appeared between the Gd<SUB>1-x</SUB>A<SUB>x</SUB>MnO<SUB>3</SUB> perovskite and YSZ even at a high annealing temperature of 1400°C. GdCoO<SUB>3</SUB> did not react with YSZ even at 1000°C. The adjustment of the thermal expansion rate to YSZ needed the formation of solid solution such as Ln<SUB>1-x</SUB>Sr<SUB>x</SUB>Mn<SUB>1-y</SUB>O<SUB>3</SUB>, some of which showed the high cathodic activity and good compatibility.

収録刊行物

  • 粉体および粉末冶金

    粉体および粉末冶金 46(3), 285-292, 1999-03-15

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002262092
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4690232
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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