Abstract

The electrochemical polymerization of diphenylamine-2-carboxylic acid in an alkaline electrolyte on an anodized graphite foil is compared with the corresponding electrochemical polymerization on a glassy carbon substrate. The physicochemical properties and electrochemical characteristics of electroactive polymer coatings (polydiphenylamine-2-carboxylic acid) in 1 М H₂SO₄ solution in the potential range from –1 to +1 V are investigated. It is shown that two different polymers are formed on the used substrates. According to the electrochemical, electron microscopy, and X-ray photoelectron spectroscopy data, the possible pathway of electropolymerization on surfaces of the anodized graphite foil and glassy carbon is proposed. The calculated values of the electrochemical capacity, Coulomb efficiency, and stability of polymer coatings based on poly(diphenylamine-2-dicarboxylic acid) on the anodized graphite foil substrate in multiple cycle experiments are found to be good for designing electrodes for supercapacitors.

中文翻译：

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二苯胺-2-羧酸在玻碳和活性石墨箔上的电化学聚合

摘要

将二苯胺-2-羧酸在阳极氧化石墨箔上的碱性电解质中的电化学聚合与在玻璃碳基板上的相应电化学聚合进行比较。电活性聚合物涂层（聚二苯胺-2-羧酸）在 1 М H ₂ SO _{4 中}的理化性质和电化学特性研究了在 –1 到 +1 V 的电位范围内的解决方案。表明在使用的基材上形成了两种不同的聚合物。根据电化学、电子显微镜和X射线光电子能谱数据，提出了阳极氧化石墨箔和玻璃碳表面电聚合的可能途径。在多次循环实验中，阳极氧化石墨箔基板上基于聚（二苯胺-2-二羧酸）的聚合物涂层的电化学容量、库仑效率和稳定性的计算值被发现有利于设计超级电容器的电极。