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Electronic Structure of Pt and Pt-Co Nanoparticles with O2 and O2/H2O Adsorption Revealed by In Situ XAFS and Hard X-ray Photoelectron Spectroscopy
https://repo.qst.go.jp/records/47984
https://repo.qst.go.jp/records/47984bf21cda4-e4f7-49fe-9572-b0348d036e4a
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-05-23 | |||||
| タイトル | ||||||
| タイトル | Electronic Structure of Pt and Pt-Co Nanoparticles with O2 and O2/H2O Adsorption Revealed by In Situ XAFS and Hard X-ray Photoelectron Spectroscopy | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 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 | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Cui, Yitao
× Cui, Yitao× Harada, Yoshihisa× Hatanaka, Tatsuya× Nakamura, Naoki× Ando, Masaki× Yoshida, Toshihiko× Ikenaga, Eiji× Ishii, Kenji× Matsumura, Daiju× Li, Rui× Oshima, Masaharu× 石井 賢司 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The electronic structures of Pt and Pt-Co nanoparticles with O2 adsorption and O2/H2O co-adsorption were investigated by in situ hard X-ray photoelectron spectroscopy (HAXPES) and in situ high resolution fluorescence detection X-ray absorption spectroscopy (HERFD-XAS) to clarify the effects of water adsorption on fuel cell cathode catalysis surface. The experimental results suggest that under the pressure of 1 mbar, the adsorption of H2O hinders the successive O2 adsorption on Pt surface, while under the pressure of 1 bar, the adsorption of H2O enhances the adsorption of O2 on Pt surface. This water effect is found to be more significant on Pt surface than on Pt-Co surface. These results would be helpful to understand how the water affects the fuel cell performance and why Pt-Co nanoparticles show higher oxygen reduce reaction (ORR) activity than Pt nanoparticles. | |||||
| 書誌情報 |
ECS Transactions 巻 72, 号 8, p. 131-136, 発行日 2016-10 |
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| 出版者 | ||||||
| 出版者 | The Electrochemical Society | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1149/07208.0131ecst | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://ecst.ecsdl.org/content/72/8/131 | |||||
| 関連名称 | http://ecst.ecsdl.org/content/72/8/131 | |||||
