| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2023-07-07 |
| タイトル |
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タイトル |
Investigation of Hydrogen Superoxide Adsorption during ORR on Pt/C Catalyst in Acidic Solution for PEFC by in-situ High Energy Resolution XAFS |
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言語 |
en |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Naoki Yamamoto
Daiju Matsumura
Yuto Hagihara
Kei Tanaka
Yuta Hasegawa
Kenji Ishii
Hirohisa Tanaka
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Oxygen Reduction Reaction (ORR) is one of the key electrochemical reactions, especially in Polymer Electrolyte Fuel Cells (PEFCs). In this work, the reaction pathway and intermediate species such as molecular-type oxygen during ORR were discussed. High energy resolution X-ray absorption fine structure spectra at the Pt L3-edge were obtained to observe the electronic structure of Pt catalyst. Carbon-supported Pt nanoparticles as powder catalysts were used for measurement as more realistic conditions, and the species adsorbed on the Pt nanoparticles were analyzed while controlling under the potentials in acidic electrolyte solution with N2 or O2 gas bubbling. Molecular-type oxygen adsorption species is observed only in the O2-bubbled electrolyte solution. This intermediate adsorption species is assigned to a hydrogen superoxide. |
| 書誌情報 |
Journal of Power Sources
巻 557,
p. 232508,
発行日 2023-01
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| 出版者 |
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出版者 |
ELSEVIER |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1873-2755 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1016/j.jpowsour.2022.232508 |
