Abstract
Composite electroactive coatings (CEACs) are prepared on the basis of polyaniline (PANI) and manganese compounds (MnOx) by potentiodynamic electrodeposition on activated graphite foil using aniline sulfate solutions in 1 M H2SO4. Manganese ions are incorporated into the CEACs in several ways. The electrochemical behavior of prepared CEACs is fundamentally similar to that of pure PANI in acidic aqueous solutions. However, in the presence of incorporated manganese oxide compounds, the electrochemical capacitance nearly doubles at high current loads (up to 2.0 mA cm–2), while the stability during continuous cycling improves. X-ray photoelectron spectroscopy studies of the manganese oxide compounds incorporated into CEACs reveal their amorphous nature and that manganese atoms are present in CEACs in several oxidation states.
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Funding
The work was performed in accordance with state assignment no. 0089-2019-0010 and supported in part within the framework of state assignment no. АААА-А19-119061890019-5. Part of this study was carried out using the facilities of the Analytical Center for Collective Use of the Institute of Problems of Chemical Physics, Russian Academy of Sciences, and the Scientific Center in Chernogolovka, Russian Academy of Sciences.
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Translated by A. Kukharuk
Abbreviations used: CEAC, composite electroactive coating; PANI, polyaniline; SEM, scanning electron microscopy; XPS, X-ray photoelectron spectroscopy.
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Abalyaeva, V.V., Efimov, O.N., Dremova, N.N. et al. Synthesis and Electrochemical Behavior of Composite Materials Based on Polyaniline and Manganese Compounds on Activated Graphite Foil. Prot Met Phys Chem Surf 57, 500–506 (2021). https://doi.org/10.1134/S2070205121030023
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DOI: https://doi.org/10.1134/S2070205121030023