Istakova O I, Konev D V, Medvedeva T O, Goncharova O A, Vorotyntsev M A
Institute for Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia.
Skolkovo Institute of Science and Technology, Moscow, Russia.
Data Brief. 2020 Feb 29;29:105360. doi: 10.1016/j.dib.2020.105360. eCollection 2020 Apr.
The paper presents three datasets obtained by electrochemical quartz microbalance technique which was applied to studies of conducting polymer film in contact with non-aqueous electrolyte solution. The first dataset describes the calibration procedure of gold-coated quartz crystal, immersed in acetonitrile silver ion-containing electrolyte, by means of silver layer electrodeposition. On the basis of experimentally measured dependence of the resonance frequency on the varying electrode mass in the course of electrochemical silver deposition/dissolution, the calibration coefficient was found to be equal to 13.6 ng/Hz. The second dataset has been collected when thus calibrated EQCM cell was used for determination of the mass change due to the polypyrrole film growth during anodic oxidation of pyrrole monomer from its acetonitrile solution. Its treatment reveals the proportionality between the mass change and the charge spent for pyrrole electrooxidation, the proportionality coefficient being 53.5 g per mole of electrons. The third dataset contains EQCM measurement data during repetitive charge-discharge treatment of the deposited polypyrrole film (cyclic voltammetry, CV) in monomer-free electrolyte. Collected data shows that continuous cycling of the polymer film leads to progressive increase of the cation-exchange contribution to the total ion flux which maintains the film's electroneutrality during variation of its redox state. These findings might be useful both for a qualitative consideration of the cycling stability of polypyrrole in non-aqueous medium and for a quantitative mathematical modelling of polypyrrole electropolymerization and its redox transformations.
本文介绍了通过电化学石英微天平技术获得的三个数据集，该技术用于研究与非水电解质溶液接触的导电聚合物薄膜。第一个数据集描述了通过银层电沉积对浸入含乙腈银离子电解质中的镀金石英晶体进行校准的过程。基于在电化学银沉积/溶解过程中实验测量的共振频率对变化的电极质量的依赖性，发现校准系数等于13.6 ng/Hz。第二个数据集是在使用如此校准的电化学石英晶体微天平（EQCM）电池测定吡咯单体从其乙腈溶液中阳极氧化过程中聚吡咯膜生长引起的质量变化时收集的。对其处理揭示了质量变化与吡咯电氧化所消耗电荷之间的比例关系，比例系数为每摩尔电子53.5克。第三个数据集包含在无单体电解质中对沉积的聚吡咯膜进行重复充放电处理（循环伏安法，CV）期间的EQCM测量数据。收集的数据表明，聚合物膜的连续循环导致阳离子交换对总离子通量的贡献逐渐增加，这在膜的氧化还原状态变化期间维持了膜的电中性。这些发现对于定性考虑聚吡咯在非水介质中的循环稳定性以及对聚吡咯电聚合及其氧化还原转变进行定量数学建模可能都有用。
