Nd₂CuO₄/4YSZ/Pt素子の直流電流におけるNO_<i>x</i>応答特性

• 何 昆燿

  東京大学先端科学技術研究センター

• 宮山 勝

  東京大学先端科学技術研究センター

• 柳田 博明

  (財) ファインセラミックスセンター

書誌事項

タイトル別名

• NO_<i>x</i> Response Properties in DC Current of Nd₂CuO₄/4YSZ/Pt Element
• NOx Response Properties in DC Current o

抄録

The NO_x response properties in dc current of an Nd₂CuO₄/Y₂O₃ (4mol%)-stabilized ZrO₂ (4YSZ)/Pt element were investigated in both air and 5%O₂-N₂ mixed gas at 400°C. The current increased in proportion to the logarithm of NO_x concentration, even when two electrodes were exposed to the same atmosphere. When Nd₂CuO₄ was used as the cathode, the ratio of current in NO_x to that in carrier gas at 1V was larger for NO₂ than that for NO and not affected by the variation of oxygen concentration within 5 to 20% in carrier gas. In contrast, when Pt was used as the cathode, the current ratio was dependent on the oxygen concentration. Impedance analysis showed decreases in resistance and capacitance at the electrolyte/electrode interfaces with the introduction of NO_x gas. The possibility of a NO_x gas sensor unaffected by ambient oxygen concentration was suggested.

収録刊行物

• Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌)

  Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌) 104 (1215), 995-999, 1996

  公益社団法人 日本セラミックス協会

キーワード

• NO_x gas
• Nd₂CuO₄
• YSZ
• Electrode
• Gas sensing
• Impedance

詳細情報

• CRID: 1390282680255652864
• NII論文ID: 110002291388
• NII書誌ID: AN10040326
• DOI: 10.2109/jcersj.104.995
• ISSN: 18821022
• ISSN: 09145400
• NDL書誌ID: 4068226
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4068226
• Web Site: http://www.jstage.jst.go.jp/article/jcersj1988/104/1215/104_1215_995/_pdf
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