Abstract
It has been demonstrated that, due to the heterogeneity of the surface of anodized graphite foil (AGF), the adsorption of the aniline monomer (An) occurs on active oxygen-containing sites. The latter results in its oxidation, dimerization, and oligomerization and growth of rodlike polyaniline (PAni) structures. Further electrosynthesis (ES) of PAni has produced a two-phase coating including the above-mentioned rodlike structures and regular polyaniline bodies of a granular structure. Cycling of electrodes with such coating in the expanded area of anode potentials (up to 0.8–0.9 V) leads to the formation of a homogeneous coating. The electrodes processed in this way have appeared to be highly stable at storing and conducting a large number of charge–discharge cycles.
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ACKNOWLEDGMENTS
The work was performed accordance with a state order, state registration no. 0089-2019-0010, to the Institute of Problems of Chemical Physics of the Russian Academy of Sciences.
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Translated by D. Marinin
Abbreviations: PAni, polyaniline; AS, aniline sulfate; GC, glass carbon; GF, graphite foil; AGF, activated graphite foil; ES, electrosynthesis; FA, formic acid; US, ultrasound; CVA, cyclovoltamperogram.
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Abalyaeva, V.V., Dremova, N.N., Kabachkov, E.N. et al. Peculiarities of Electrosynthesis of Polyaniline Coating on Activated Graphite Foil. Prot Met Phys Chem Surf 56, 944–950 (2020). https://doi.org/10.1134/S2070205120050020
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DOI: https://doi.org/10.1134/S2070205120050020