Facilitating room-temperature oxygen ion migration via Co-O bond activation in cobaltite films
文献类型：期刊论文
| 作者 | Wang, Qian2; Gu, Youdi1; Yin, Siqi2; Sun, Yiming2; Liu, Wei1; Zhang, Zhidong1; Pan, Feng2; Song, Cheng2 |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2021-11-11 |
| 卷号 | 13期号:43页码:18256-18266 |
| ISSN号 | 2040-3364 |
| DOI | 10.1039/d1nr03801j |
| 通讯作者 | Gu, Youdi(ydgu14b@imr.ac.cn) ; Song, Cheng(songcheng@mail.tsinghua.edu.cn) |
| 英文摘要 | Oxygen ion migration in strongly correlated oxides can cause dramatic changes in the crystal structure, chemical and magnetoelectric properties, which holds promising for a wide variety of applications in catalysis, energy conversion, and electronics. However, the high strength and stability of metal-oxygen (M-O) bonds cause a large thermodynamic barrier for oxygen migration. Here, we designed Co-O bond activation in cobaltite (SrCoOx) films by Au-nanodot-decoration. Charge transfer from Au to SrCoOx effectively weakens the Co-O bond, meanwhile Co-O-Au synergistic bonding remarkably decreases the migration barrier of oxygen ions. Fast oxygen evolution occurs at the perimeter of the Au/SrCoOx interface, and the chemical potential gradient of O2- drives inner ion diffusion to the surface. Consequently, bias-free topotactic phase reduction from perovskite SrCoO3-delta to brownmillerite SrCoO2.5 has been achieved at room temperature. Our finding explores a new dimension to accelerate oxygen ion kinetics in transition-metal oxides from the aspect of interfacial bond activation, which is significant for developing oxide/noble-metal interfaces for high-efficiency ion migration and redox catalysis at low temperature. |
| 资助项目 | Beijing Innovation Center for Future Chip (ICFC), Tsinghua University ; National Key Research and Development Program of China[2016YFA0203800] ; National Natural Science Foundation of China[51871130] ; Natural Science Foundation of Beijing, China[JQ20010] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000712453200001 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | Beijing Innovation Center for Future Chip (ICFC), Tsinghua University ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; Natural Science Foundation of Beijing, China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/167149]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Gu, Youdi; Song, Cheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat MOE, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qian,Gu, Youdi,Yin, Siqi,et al. Facilitating room-temperature oxygen ion migration via Co-O bond activation in cobaltite films[J]. NANOSCALE,2021,13(43):18256-18266. |
| APA | Wang, Qian.,Gu, Youdi.,Yin, Siqi.,Sun, Yiming.,Liu, Wei.,...&Song, Cheng.(2021).Facilitating room-temperature oxygen ion migration via Co-O bond activation in cobaltite films.NANOSCALE,13(43),18256-18266. |
| MLA | Wang, Qian,et al."Facilitating room-temperature oxygen ion migration via Co-O bond activation in cobaltite films".NANOSCALE 13.43(2021):18256-18266. |
入库方式： OAI收割
来源：金属研究所
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