| Zugriffsnummer | 48636 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Structural engineering and electronic state tuning optimization of molybdenum-doped cobalt hydroxide nanosheet self-assembled hierarchical microtubules for efficient electrocatalytic oxygen evolution |
| Autor(in); Institution |
Wang, Chao; College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, Anhui Normal University, Wuhu, CHINA
Li, Wen; College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, Anhui Normal University, Wuhu, CHINA
Kistanov, Andrey A.; Nano and Molecular Systems Research Unit, University of Oulu, FINLAND
Singh, Harishchandra; Nano and Molecular Systems Research Unit, University of Oulu, FINLAND
Cao, Wei; Nano and Molecular Systems Research Unit, University of Oulu, FINLAND
Geng, Baoyou; College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, Anhui Normal University, Wuhu, CHINA; Institute of Energy, Hefei Comprehensive National Science Center, Hefei, CHINA
|
| Quelle/Jahr | Journal of Colloid and Interface Science: 628, Pt. B (2022), 398 - 406 |
| ISSN | 0021-9797 (PRINT) ; 1095-7103 (ONLINE) |
| DOI | |
| Verlag | Amsterdam: Elsevier |
| Freie Schlagworte | Cobalt-based hydroxide ; Structural engineering ; Self-assembled ; Oxygen evolution reaction |
| Zusammenfassung | Cobalt-based hydroxide are ideal candidates for the oxygen evolution reaction. Herein, we use molybdenum oxide nanorods as sacrificial templates to construct a self-supporting molybdenum-doped cobalt hydroxide nanosheet hierarchical microtubule structure based on a structural engineering strategy to improve the active area of the catalyst. X-ray-based spectroscopic tests revealed that Mo (VI) with tetrahedral coordination intercalated into the interlayer of cobalt hydroxide, promoting interlayer separation. At the same time, Mo is connected with Co through oxygen bonds, which promotes the transfer of Co charges to Mo and reduces the electron cloud density of Co ions. In 1 M KOH, optimized molybdenumdoped cobalt hydroxide nanosheet microtubules only needs an overpotential of 288 mV to drive a current density of 10 mA cm-2, which is significantly better than that of pure Co(OH)2 nanosheets and RuO2. Structural engineering and electronic state regulation can effectively improve the oxygen evolution |
| Themenbereich der Metrologie | Photometrie und Radiometrie |
Zitierung
Wang, C., Li, W., Kistanov, A. A., Singh, H., Kayser, Y., Cao, W., & Geng, B. (2022). Structural engineering and electronic state tuning optimization of molybdenum-doped cobalt hydroxide nanosheet self-assembled hierarchical microtubules for efficient electrocatalytic oxygen evolution. Journal of Colloid and Interface Science, 628, Pt. B, 398–406. https://doi.org/10.1016/j.jcis.2022.08.069