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Assignment of elementary reactions to impedance components for solid-oxide fuel cells and proton-conducting ceramic fuel cells with Yb and Co-doped barium zirconate as the cathode
http://hdl.handle.net/10458/0002001925
http://hdl.handle.net/10458/0002001925a44f884b-5140-44b1-8ed2-5a1b875717a4
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| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||||
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| 公開日 | 2025-11-27 | |||||||||||||||||||
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| タイトル | Assignment of elementary reactions to impedance components for solid-oxide fuel cells and proton-conducting ceramic fuel cells with Yb and Co-doped barium zirconate as the cathode | |||||||||||||||||||
| 言語 | en | |||||||||||||||||||
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| 言語 | eng | |||||||||||||||||||
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| 資源タイプ | journal article | |||||||||||||||||||
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| アクセス権 | open access | |||||||||||||||||||
| 著者 |
奥山, 勇治
× 奥山, 勇治
WEKO
35063
× Nishiya, Tomohiro
× Mikami, Yuichi
× Yamauchi, Kosuke
× Kuroha, Tomohiro
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| 内容記述タイプ | Abstract | |||||||||||||||||||
| 内容記述 | To clarify the elementary reactions of multiple impedance components in fuel cell electrodes, the impedance characteristics of Ni anode-supported fuel cells with BaZr0.8Yb0.2O3−δ and Zr0.84Y0.16O2−δ electrolytes were evaluated using BaZr0.3Yb0.2Co0.5O3−δ as the cathode. The elementary reactions were identified by separating impedance components based on isotope effects during proton/deuteron substitution. Distribution of relaxation time analysis showed that the electrode impedances of the proton-conducting ceramic fuel cells (PCFCs) and solid-oxide fuel cells (SOFCs) could be separated into five components. The isotope effect in the impedance was investigated by replacing the anode gas from H2O–H2 to D2O–D2. For PCFCs, isotope effects appeared in two high-frequency components under open-circuit voltage (OCV), indicating their relation to the anodic reaction; however, isotope effects appeared in the lowest-frequency component under bias (0.85 V). This component was attributable to water vapor formation in PCFCs. By contrast, isotope effects were observed in the three middle-frequency components under bias (0.85 V) in SOFCs, indicating their relation to the anodic reaction; however, no isotope effects appeared in the highest-frequency component among three middle-furequency components under OCV. This component was attributed to water vapor formation in SOFCs. | |||||||||||||||||||
| 言語 | en | |||||||||||||||||||
| 書誌情報 |
en : Journal of Materials Chemistry A 巻 13, p. 35480-35488, 発行日 2025-09-15 |
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| 出版者 | Royal Society of Chemistry (RSC) | |||||||||||||||||||
| 言語 | en | |||||||||||||||||||
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| 収録物識別子タイプ | EISSN | |||||||||||||||||||
| 収録物識別子 | 20507496 | |||||||||||||||||||
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| 収録物識別子タイプ | ISSN | |||||||||||||||||||
| 収録物識別子 | 20507488 | |||||||||||||||||||
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| 関連タイプ | isVersionOf | |||||||||||||||||||
| 識別子タイプ | DOI | |||||||||||||||||||
| 関連識別子 | https://doi.org/10.1039/d5ta06004d | |||||||||||||||||||
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| 出版タイプ | VoR | |||||||||||||||||||
