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Two-Electron Oxygen Reduction on Carbon Materials Catalysts: Mechanisms and Active Sites
https://repo.qst.go.jp/records/48462
https://repo.qst.go.jp/records/4846232ee7c11-fee2-418b-92b9-fc99ddb89a31
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-02-06 | |||||
| タイトル | ||||||
| タイトル | Two-Electron Oxygen Reduction on Carbon Materials Catalysts: Mechanisms and Active Sites | |||||
| 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 |
Chai, Guo-Liang
× Chai, Guo-Liang× Hou, Zhufeng× 池田, 隆司× Terakura, Kiyoyuki× 池田 隆司 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Carbon materials based catalysts (CMCs) are extensively investigated to replace expensive noble metal catalysts (NMCs) for electrochemical oxygen reduction reaction (ORR). However, two issues are needed to be clarified for further development: ORR on CMCs produces more H2O2 via 2e– process than that for NMCs in acidic condition, and the active sites for ORR of CMCs are still under debate. H2O2 formation on NMCs was thought to be activated by O2 adsorption on metal surfaces. Contrarily, the results of present study indicate that an O2 molecule would approach the hydrogen site on CMCs to form an OOH– ion which subsequently reacts with H+ to form a H2O2. The calculated electrochemical potentials, kinetics, and X-ray photoelectron spectroscopy (XPS) binding energy support well the new mechanism. Moreover, we found that the active sites for ORR are actually dependent on specific ORR process and the working potential range. The present work provides important insights into ORR for electrochemical devices. | |||||
| 書誌情報 |
The Journal of Physical Chemistry C 巻 121, 号 27, p. 14524-14533, 発行日 2017-07 |
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| 出版者 | ||||||
| 出版者 | ACS Publications | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1932-7447 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1021/acs.jpcc.7b04959 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://pubs.acs.org/doi/10.1021/acs.jpcc.7b04959 | |||||
| 関連名称 | http://pubs.acs.org/doi/10.1021/acs.jpcc.7b04959 | |||||
