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Enhanced Electrochemical Performance of MnCo1.5Fe0.5O4Spinel for Oxygen Evolution Reaction through Heat Treatment
Abstract
MnCo1.5Fe0.5O4 spinel oxide was synthesized using the sol−gel technique, followed by heat treatment at various temperatures (400, 600, 800, and 1000 °C). The prepared materials were examined as anode electrocatalysts for watersplitting systems in alkaline environments. Solid-state characterization methods, such as powder X-ray diffraction and X-ray absorption spectroscopy (XAS), were used to analyze the materials’ crystallographic structure and surface characteristics. The intrinsic activity of the MnCo1.5Fe0.5O4 was fine-tuned by altering the electronic structure by controlling the calcination temperature, and the highest activity was observed for the sample treated at 800 °C. A shift in the valence state of surface cations under oxidative conditions in an alkaline solution during the oxygen evolution reaction was detected through ex situ XAS measurements. Moreover, the influence of the experimental conditions on the electrocatalytic performance of the material, including the pH of the electrolyte and the temperature, was demonstrated.
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Authors (7)
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Marcin Zając dr inż,
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- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1021/acs.energyfuels.3c02875
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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ENERGY & FUELS
no. 38,
pages 1330 - 1336,
ISSN: 0887-0624 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Lankauf K., Lemieszek B., Górnicka K., Błaszczak P., Zając M., Jasiński P., Molin S.: Enhanced Electrochemical Performance of MnCo1.5Fe0.5O4Spinel for Oxygen Evolution Reaction through Heat Treatment// ENERGY & FUELS -Vol. 38,iss. 2 (2024), s.1330-1336
- DOI:
- Digital Object Identifier (open in new tab) 10.1021/acs.energyfuels.3c02875
- Sources of funding:
-
- Statutory activity/subsidy
- Verified by:
- Gdańsk University of Technology
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