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Enhanced CO Response of NASICON-based Gas Sensors Using Oxide-added Pt Sensing Electrode at Low Temperature Operation
http://hdl.handle.net/10069/37547
http://hdl.handle.net/10069/375473557d7f8-ea1b-4ddc-8201-19954fa2321d
名前 / ファイル | ライセンス | アクション |
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Elechem85_174.pdf (329.3 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-06-09 | |||||
タイトル | ||||||
タイトル | Enhanced CO Response of NASICON-based Gas Sensors Using Oxide-added Pt Sensing Electrode at Low Temperature Operation | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Bi2O3 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | CO Sensor | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | NASICON | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Solid Electrolyte | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Ueda, Taro
× Ueda, Taro× Takeda, Hirotaka× Kamada, Kai× Hyodo, Takeo× Shimizu, Yasuhiro |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | NASICON (Na3Zr2Si2PO12)-based solid electrolyte-type sensors equipped with various metal oxides (MO)-added Pt sensing electrode (SE, Pt(nMO) (n: MO additive amount in wt%) and Pt counter electrode (CE, Pt) on the same side of the NASICON disc were fabricated and their (Pt(nMO)/Pt sensors) CO-sensing properties were examined at 25-300°C. The Pt(15Bi2O3)/Pt sensor showed the largest CO response with a change in electromotive force to a positive direction (positive response) at 25°C, while the Pt(15CeO2)/Pt sensor showed the largest negative CO response at 25°C. The CO response of the Pt(15CeO2)/Pt sensor seems to be determined by mixed potential at the triple phase boundaries (TPBs) containing the electrochemical reactions of CO oxidation and oxygen reduction. X-ray photoelectron spectroscopy of the Pt(15Bi2O3) SE before and after exposure to CO indicated a slight reduction of Bi3+ after the exposure to CO. Therefore, the additional electrochemical reactions containing the reduction of Bi2O3 were anticipated to occur at the TPBs of the Pt(15Bi2O3) SE, which resulted in the large positive CO response of the Pt(15Bi2O3)/Pt sensor. Furthermore, the addition of 15wt% CeO2 to Pt CE of the Pt(15Bi2O3)/Pt sensor largely enhanced the magnitude of CO response and attained relatively excellent CO selectivity against H2. | |||||
書誌情報 |
Electrochemistry 巻 85, 号 4, p. 174-178, 発行日 2017-04-05 |
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出版者 | ||||||
出版者 | 電気化学会 | |||||
出版者別言語 | ||||||
Electrochemical Society of Japan | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 13443542 | |||||
EISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 21862451 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.5796/electrochemistry.85.174 | |||||
権利 | ||||||
権利情報 | c The Electrochemical Society of Japan | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Electrochemistry, 85(4), pp.174-178; 2017 |