円筒型マイクロ固体酸化物形燃料電池のインピーダンス解析 : 第1報,アノード・カソードインピーダンス分離解析(熱工学,内燃機関,動力など) Impedance Analysis of a Micro Tubular Solid Oxide Fuel Cell : 1st Report, Separate Analysis of the Impedances of the Anode and Cathode(Thermal Engineering)

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A separate analysis of the anode and cathode impedances of a practical solid oxide fuel cell (SOFC) has been performed. Electrochemical impedance spectroscopy is used for the analysis of a micro tubular SOFC havig anode-supported electrolyte with two-electrode set-up. This cell is composed of an Ni/(ZrO_2)_<0.9>(Y_2O_3)_<0.1> cermet anode, an La_<0.8>Sr_<0.2>Ga_<0.8>Mg_<0.2>O_<2.8> electrolyte, and an La_<0.6>Sr_<0.4>(Co_<0.2>Fe_<0.8>)O_3 cathode. Measurements are carried out for the cell operated at 700℃ with varying flow rate and composition of H_2-N_2 mixture gas fed into the anode and those of air-O_2 mixture gas fed into the cathode. The anode and cathode impedances are thereby found to appear in low and high frequency regions, respectively. A common equivalent circuit model is applied for the complex nonlinear least squares curve fitting of impedance spectra to acquire the resistances and capacitances of the charge and mass transfers at the anode and cathode, and the cell Ohmic resistance. Then variation of those parameters of the equivalent circuit in accordance with anode gas feed conditions are obtained for the practical SOFC. They are useful parameters for health diagnosis of SOFCs.

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  • 日本機械学会論文集 B編

    日本機械学会論文集 B編 75(755), 1510-1516, 2009

    一般社団法人 日本機械学会

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各種コード

  • NII論文ID(NAID)
    110007339829
  • NII書誌ID(NCID)
    AN00187441
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    0387-5016
  • NDL 記事登録ID
    10388432
  • NDL 雑誌分類
    ZN11(科学技術--機械工学・工業)
  • NDL 請求記号
    Z16-109
  • データ提供元
    CJP書誌  NDL  NII-ELS  J-STAGE 
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