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Controlling crystallites orientation and facet exposure for enhanced electrochemical properties of polycrystalline MoO3 films
Abstract
This study focuses on the development and optimization of MoO3 films on commercially available FTO substrates using the pulsed laser deposition (PLD) technique. By carefully selecting deposition conditions and implementing post-treatment procedures, precise control over crystallite orientation relative to the substrate is achieved. Deposition at 450 °C in O2 atmosphere results in random crystallite arrangement, while introducing argon instead of oxygen to the PLD chamber during the initial stage of sputtering exposes the (102) and (011) facets. On the other hand, room temperature deposition leads to the formation of amorphous film, but after appropriate post-annealing treatment, the (00k) facets were exposed. The deposited films are studied using SEM and XRD techniques. Moreover, electrochemical properties of FTO/MoO3 electrodes immersed in 1 M AlCl3 aqueous solution are evaluated using cyclic voltammetry and electrochemical impedance spectroscopy. The results demonstrate that different electrochemical processes are promoted based on the orientation of crystallites. When the (102) and (011) facets are exposed, the Al3+ ions intercalation induced by polarization is facilitated, while the (00k) planes exposure leads to the diminished hydrogen evolution reaction overpotential.
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Authors (6)
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Katarzyna Berent dr inż.
- Akademia Górniczo-Hutnicza, Kraków
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Mirosław Sawczak dr hab. inż.
- Polska Akademia Nauk, Instyut Maszyn Przepływowych, Gdańsk
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Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1038/s41598-023-43800-9
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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Scientific Reports
no. 13,
ISSN: 2045-2322 - Language:
- English
- Publication year:
- 2023
- Bibliographic description:
- Trzciński K., Zarach Z., Szkoda M., Nowak A., Berent K., Sawczak M.: Controlling crystallites orientation and facet exposure for enhanced electrochemical properties of polycrystalline MoO3 films// Scientific Reports -Vol. 13, (2023), s.16668-
- DOI:
- Digital Object Identifier (open in new tab) 10.1038/s41598-023-43800-9
- Sources of funding:
-
- IDUB
- Verified by:
- Gdańsk University of Technology
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