Strain Regulation to Optimize the Acidic Water Oxidation Performance of Atomic-Layer IrOx
文献类型：期刊论文
| 作者 | Meng, G; Sun, WM; Mon, AA; Wu, X; Xia, LY; Han, AJ; Wang, Y; Zhuang, ZB; Liu, JF; Wang, DS |
| 刊名 | ADVANCED MATERIALS
 |
| 出版日期 | 2019 |
| 卷号 | 31期号:37页码:- |
| 关键词 | OXYGEN EVOLUTION REACTION CATALYSTS ELECTROCATALYSTS TRANSITION PARTICLES EFFICIENT FE NI |
| ISSN号 | 0935-9648 |
| DOI | 10.1002/adma.201903616 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Strain regulation has become an important strategy to tune the surface chemistry and optimize the catalytic performance of nanocatalysts. Herein, the construction of atomic-layer IrOx on IrCo nanodendrites with tunable Ir Symbol of the Klingon Empire O bond length by compressive strain effect for oxygen evolution reaction (OER) in acidic environment is demonstrated. Evidenced from in situ extended X-ray absorption fine structure, it is shown that the compressive strain of the IrOx layer on the IrCo nanodendrites decreases gradually from 2.51% to the unstrained state with atomic layer growth (from approximate to 2 to approximate to 9 atomic layers of IrOx), resulting in the variation of the Ir Symbol of the Klingon Empire O bond length from shortened 1.94 angstrom to normal 1.99 angstrom. The approximate to 3 atomic-layer IrOx on IrCo nanodendrites with an Ir Symbol of the Klingon Empire O bond length of 1.96 angstrom (1.51% strain) exhibits the optimal OER activity compared to the higher-strained (2.51%, approximate to 2 atomic-layer IrOx) and unstrained (>6 atomic-layer IrOx) counterparts, with an overpotential of only 247 mV to achieve a current density of 10 mA cm(-2). Density functional theory calculations reveal that the precisely tuned compressive strain effect balances the adsorbate-substrate interaction and facilitates the rate-determining step to form HOO*, thus assuring the best performance of the three atomic-layer IrOx for OER. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32217]  |
| 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.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China; 2.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China; 3.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China; 4.China Agr Univ, Coll Sci, Beijing 100193, Peoples R China; 5.Petrochem Res Inst PetroChina, Beijing 100195, Peoples R China; 6.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 7.Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, G,Sun, WM,Mon, AA,et al. Strain Regulation to Optimize the Acidic Water Oxidation Performance of Atomic-Layer IrOx[J]. ADVANCED MATERIALS,2019,31(37):-. |
| APA | Meng, G.,Sun, WM.,Mon, AA.,Wu, X.,Xia, LY.,...&Li, YD.(2019).Strain Regulation to Optimize the Acidic Water Oxidation Performance of Atomic-Layer IrOx.ADVANCED MATERIALS,31(37),-. |
| MLA | Meng, G,et al."Strain Regulation to Optimize the Acidic Water Oxidation Performance of Atomic-Layer IrOx".ADVANCED MATERIALS 31.37(2019):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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