Solid oxide amperometric CO sensor for monitoring exhaust gas from water heater

Tatsumi Ishihara, Phawachalotorn Armonat, Rie Kadowaki, Oravan Sanguanruang

    研究成果: ジャーナルへの寄稿学術誌査読

    2 被引用数 (Scopus)

    抄録

    An amperometric CO sensor using a solid oxide electrolyte was studied and it was found that the oxygen pumping current increased with increasing CO concentration when using Au(10 wt%)/In1.9Sn0.1Sn 0.1O3 and RuO2(10 wt%)/La0.6Sr 0.4CoO3 as the electrode catalysts and La 0.9Sr0.1Ga0.8Mg0.2O3 as the electrolyte. Mixed potentials are also observed on this sensor upon exposure to CO, and so changes in oxygen pumping current may be caused by the mixed potentials formed upon exposure to CO. Substitution of Ga in the LaGaO 3 electrolyte with Fe is effective for increasing the sensitivity, and this sensor is almost insensitive to CO2 and CH4. As a result, it is expected that this sensor can be used for the detection of CO in exhaust gas from a small gas water heater without a flue line.

    本文言語英語
    ページ(範囲)183-192
    ページ数10
    ジャーナルSensors and Materials
    22
    4
    出版ステータス出版済み - 2010

    !!!All Science Journal Classification (ASJC) codes

    • 器械工学
    • 材料科学(全般)

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