Abstract

Composite electroactive coatings (CEACs) are prepared on the basis of polyaniline (PANI) and manganese compounds (MnO_x) 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.

中文翻译：

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基于聚苯胺和锰化合物的复合材料在活性石墨箔上的合成及电化学行为

摘要

在聚苯胺 (PANI) 和锰化合物 (MnO _x )的基础上，使用 1 MH ₂ SO _{4 中的}苯胺硫酸盐溶液通过动电位电沉积在活性石墨箔上制备复合电活性涂层 (CEAC) 。锰离子以多种方式结合到 CEAC 中。制备的 CEACs 在酸性水溶液中的电化学行为与纯 PANI 的电化学行为基本相似。然而，在掺入氧化锰化合物的情况下，电化学电容在高电流负载（高达 2.0 mA cm ^–2)，同时提高连续循环期间的稳定性。结合到 CEAC 中的氧化锰化合物的 X 射线光电子能谱研究揭示了它们的无定形性质，并且锰原子以几种氧化态存在于 CEAC 中。