固体酸化物燃料電池のカソード材料としてのLn_<1-x>Sr_xMnO_3(Ln=La, Pr, Nd, Sm and Gd) Ln_<1-x>Sr_xMnO_3(Ln=Pr, Nd, Sm and Gd)as the Cathode Material for Solid Oxide Fuel Cells

この論文にアクセスする

この論文をさがす

著者

抄録

The perovskite type manganite systems, Ln<SUB>1-x</SUB>Sr<SUB>x</SUB>MnO<SUB>3</SUB> (Ln=La, Pr, Nd, Sm and Gd; 0.0≤x≤0.5) were studied as the electrode materials for solid oxide fuel cells (SOFC) from the view point of applications to the co-firing process of the electrolyte and electrode at higher temperature. The reactivity tests with yttria-stabilized zirconia (YSZ), no reaction product appeared between the Ln<SUB>1-x</SUB>Sr<SUB>x</SUB>MnO<SUB>3</SUB> perovskite and YSZ even at a high annealing temperature of 1400°C when the lanthanoid elements were Pr, Nd and Sm and the Sr content was around 30% (x=0.3). The adjustment of the thermal expansion rate of Ln<SUB>1-x</SUB>Sr<SUB>x</SUB>MnO<SUB>3</SUB> to YSZ, around x=0.1-0.2 in La<SUB>1-x</SUB>Sr<SUB>x</SUB>MnO<SUB>3</SUB>, 0.3 in Pr<SUB>1-x</SUB>Sr<SUB>x</SUB>MnO<SUB>3</SUB> and Nd<SUB>1-x</SUB>Sr<SUB>x</SUB>MnO<SUB>3</SUB> and more than 0.4 in Sm<SUB>1-x</SUB>Sr<SUB>x</SUB>MnO<SUB>3</SUB> and Gd<SUB>1-x</SUB>Sr<SUB>x</SUB>MnO<SUB>3</SUB>. The electrical conductivity reached to 200 S/cm at 1000°C for all Ln<SUB>0.7</SUB>Sr<SUB>0.3</SUB>MnO<SUB>3</SUB> systems. The polarization measurements as an air electrode showed no significant dependence on the kind of lanthanoid elements. In the point of the electrode activity, high electrical conductivity, and low reactivity and good compatibility with YSZ, Pr<SUB>0.7</SUB>Sr<SUB>0.3</SUB>MnO<SUB>3</SUB> and Nd<SUB>0.7</SUB>Sr<SUB>0.3</SUB>MnO<SUB>3</SUB> are considered to be the most suitable electrode materials for the co-firing process.

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), 293-299, 1999-03-15 

    Japan Society of Powder and Powder Metallurgy

参考文献:  8件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10002262103
  • 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
    4690239
  • 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 
ページトップへ