期刊論文
| 學年 | 108 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2020-07-06 |
| 作品名稱 | Utilizing ion leaching effects for achieving high oxygen-evolving performances on hybrid nanocomposite with self-optimized behaviors |
| 作品名稱（其他語言） | |
| 著者 | D. Guan; G. Ryu; Z. Hu; J. Zhou; C. L. Dong; Y. C. Huang; K. Zhang; Y. Zhong; A. C. Komarek; M. Zhu; X. Wu; C. W. Pao; C. K. Chang; H. J. Lin; C. T. Chen; W. Zhou; Z. Shao |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Nature Communications 11, 3376 |
| 摘要 | Ion leaching from pure-phase oxygen-evolving electrocatalysts generally exists, leading to the collapse and loss of catalyst crystalline matrix. Here, different from previous design methodologies of pure-phase perovskites, we introduce soluble BaCl2 and SrCl2 into perovskites through a self-assembly process aimed at simultaneously tuning dual cation/anion leaching effects and optimizing ion match in perovskites to protect the crystalline matrix. As a proof-of-concept, self-assembled hybrid Ba0.35Sr0.65Co0.8Fe0.2O3-δ (BSCF) nanocomposite (with BaCl2 and SrCl2) exhibits the low overpotential of 260 mV at 10 mA cm-2 in 0.1 M KOH. Multiple operando spectroscopic techniques reveal that the pre-leaching of soluble compounds lowers the difference of interfacial ion concentrations and thus endows the host phase in hybrid BSCF with abundant time and space to form stable edge/face-sharing surface structures. These self-optimized crystalline structures show stable lattice oxygen active sites and short reaction pathways between Co–Co/Fe metal active sites to trigger favorable adsorption of OH− species. |
| 關鍵字 | |
| 語言 | en_US |
| ISSN | 2041-1723 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 是 |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/120729 ) |