Electrochemically accessing ultrathin Co (oxy)-hydroxide nanosheets and operando identifying their active phase for the oxygen evolution reaction
文献类型：期刊论文
| 作者 | Zhou, J; Wang, Y; Su, XZ; Gu, SQ; Liu, RD; Huang, YB; Yan, S; Li, J; Zhang, S |
| 刊名 | ENERGY & ENVIRONMENTAL SCIENCE
 |
| 出版日期 | 2019 |
| 卷号 | 12期号:2页码:739—746 |
| 关键词 | HIGH-PERFORMANCE ELECTROCATALYSTS WATER OXIDATION SELF-RECONSTRUCTION ARRAYS OXIDES CATALYSTS |
| ISSN号 | 1754-5692 |
| DOI | 10.1039/c8ee03208d |
| 文献子类 | 期刊论文 |
| 英文摘要 | Cobalt (oxy)-hydroxide (CoOOH) has recently been identified as a realistic active species under operando conditions for the electrocatalytic oxygen evolution reaction (OER), which plays a pivotal role in multiple energy conversion technologies. Therefore, searching for a high-yield method to fabricate advanced nanostructures and understanding their reactivity are challenging but urgent tasks. Here, rather than conventional liquid exfoliation, we report an electrochemical route for potentially large-scale production of ultrathin CoOOH nanosheets, which deliver exceptionally high OER activity. This nearly-all-surface material provides an excellent platform to study the surface chemistry for electrocatalytic activity. Combining operando X-ray spectroscopy and theoretical calculations demonstrated a potential-dependent deprotonation reaction, i.e., Co3+OOH is transformed into an active Co3+/4+OOH1-x phase for water oxidation under the applied potential. Comprehensive analysis suggested that reducing the deprotonation energy is the key to enhance the OER activity, and oxidized oxygen ions might act as electrophilic centers for the OER. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31589]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 3.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhou, J,Wang, Y,Su, XZ,et al. Electrochemically accessing ultrathin Co (oxy)-hydroxide nanosheets and operando identifying their active phase for the oxygen evolution reaction[J]. ENERGY & ENVIRONMENTAL SCIENCE,2019,12(2):739—746. |
| APA | Zhou, J.,Wang, Y.,Su, XZ.,Gu, SQ.,Liu, RD.,...&Zhang, S.(2019).Electrochemically accessing ultrathin Co (oxy)-hydroxide nanosheets and operando identifying their active phase for the oxygen evolution reaction.ENERGY & ENVIRONMENTAL SCIENCE,12(2),739—746. |
| MLA | Zhou, J,et al."Electrochemically accessing ultrathin Co (oxy)-hydroxide nanosheets and operando identifying their active phase for the oxygen evolution reaction".ENERGY & ENVIRONMENTAL SCIENCE 12.2(2019):739—746. |
入库方式： OAI收割
来源：上海应用物理研究所
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