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  Largely Enhanced Oxygen Evolution Performance in a Ferromagnetic Ruddlesden–Popper Phase Cobaltate

Meng, Z., Qi, Y., Qin, P., Zhou, X., Wang, X., Chen, H., et al. (2025). Largely Enhanced Oxygen Evolution Performance in a Ferromagnetic Ruddlesden–Popper Phase Cobaltate. Nano Letters, 25(12), 4887-4894. doi:10.1021/acs.nanolett.5c00061.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0010-F0CF-6 Versions-Permalink: https://hdl.handle.net/21.11116/0000-0010-F0D2-1
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Supporting Information: Experimental methods; theoretical calculation; XPS analysis; electrical resistance measurements; repeat and reliability experiments; OER test at pH 14
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 Urheber:
Meng, Z.1, Autor
Qi, Y.1, Autor
Qin, P.1, Autor
Zhou, X.1, Autor
Wang, X.1, Autor
Chen, H.1, Autor
Liu, L.1, Autor
Zhao, G.1, Autor
Duan, Z.1, Autor
Liu, J.1, Autor
Zhang, Q.2, Autor
Tang, P.1, 3, 4, Autor           
Liu, Z.1, Autor
Affiliations:
1School of Materials Science and Engineering, Beihang University, ou_persistent22              
2Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, ou_persistent22              
3Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
4Center for Free-Electron Laser Science, ou_persistent22              

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Schlagwörter: magnetocatalysis, oxygen evolution reaction, La2CoO4, ferromagnetic oxides
 Zusammenfassung: The oxygen evolution reaction (OER), as a key half-reaction in water splitting, plays a critical role in various energy conversion and storage systems. Novel high-performance catalysts have always been desirable. In this work, we have fabricated insulating perovskite LaCoO3 and its corresponding Ruddlesden–Popper (RP) phase La2CoO4 films. At room temperature, the perovskite LaCoO3 films are nonmagnetic while the RP phase La2CoO4 films are ferromagnetic. The magnetic RP phase La2CoO4 thin films exhibit significantly higher OER activities, with a nearly 70-fold increase in current density compared to the perovskite LaCoO3. Theoretical calculations indicate that the ferromagnetic order in the RP phase film substantially lowers the OER overpotential. This study highlights the potential of RP phase magnetic cobaltates for electrochemical water oxidation and magnetocatalysis applications.

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Sprache(n): eng - English
 Datum: 2025-03-112025-01-032025-03-132025-03-172025-03-26
 Publikationsstatus: Erschienen
 Seiten: 8
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1021/acs.nanolett.5c00061
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Projektname : Z.L. acknowledges financial support from Beijing Natural Science Foundation (no. JQ23005). Z.L. acknowledges financial support from National Key R&D Program of China (no. 2022YFA1602700). Z.L., P.T., and P.Q. acknowledge financial support from Fundamental Research Funds for the Central Universities. Z.L. acknowledges financial supports from National Natural Science Foundation of China (nos. 52425106 and 52271235). Z.L. acknowledges financial support from National Key R&D Program of China (no. 2022YFB3506000). P.Q. acknowledges financial support from National Natural Science Foundation of China (no. 52401300). Z.L. acknowledge financial support from National Natural Science Foundation of China (no. 52121001). P.T. acknowledges financial supports from National Natural Science Foundation of China (nos. 12234011 and 12374053). P.Q. acknowledges funding from China National Postdoctoral Program for Innovative Talents (no. BX20230451) and from China Postdoctoral Science Foundation (no. 2024M754058). Z.M. acknowledges financial support from National Natural Science Foundation of China (no. 524B2003). The authors acknowledge Dr. Qiao Jin and Dr. Erjia Guo at Chinese Academy of Sciences for their help in collecting the x-ray diffraction data.
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Quelle 1

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Titel: Nano Letters
  Kurztitel : Nano Lett.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Washington, DC : American Chemical Society
Seiten: - Band / Heft: 25 (12) Artikelnummer: - Start- / Endseite: 4887 - 4894 Identifikator: ISSN: 1530-6984
CoNE: https://pure.mpg.de/cone/journals/resource/110978984570403