A study of ion transports and growth of conducting polypyrrole with electrochemical quartz crystal microbalance
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Cited by (31)
A high-capacity hybrid desalination system using battery type and pseudocapacitive type electrodes
2023, DesalinationCitation Excerpt :In Fig. 4(b) for the PPy-coated electrode, an obvious anodic peak is observed at 0.1 V, and a corresponding broad cathodic peak is found on the negative sweep at −0.2 V. This pair of peaks is mainly attributed to the PPy redox transition involving the adsorption/desorption of chloride ions resulting from the charge compensation effect [62–64]. In fact, the desirable redox responses of PPy in neutral media have been proposed to be between −0.4 and 0.5 V vs. (Ag/AgCl) [51] because the redox reversibility became poor at the potentials more negative than −0.4 V. Accordingly, the working potential window of PPy was set from the OCP (0.15 V) to the lower potential limit (−0.4 V) since PPy is the negative electrode in the desalination system.
Spectroelectrochemical investigation of electrodeposited polypyrrole complexes with sulfonated polyelectrolytes
2021, Electrochimica ActaCitation Excerpt :The first electrochemical preparation of PPy was carried out in dilute sulfuric acid by Bocchi et al. in 1968 [3]. PPy electrosynthesis in aqueous solutions leads to the more porous films [3], the pyrrole electropolymerization beginning at less positive potentials than in acetonitrile [4] and proceeding at a higher rate [5] when using potentiodynamic mode. The main peculiarities of PPy synthesis in aqueous solutions were considered in [6–10].
A highly efficient faradaic desalination system utilizing MnO<inf>2</inf> and polypyrrole-coated titanium electrodes
2021, DesalinationCitation Excerpt :The corresponding cathodic currents start at ca. 0.4 V with two broad peaks on the negative sweep. These two peaks are mainly attributed to the PPy reduction renering the releasing of chloride ions resulting from the charge compensation effect [62–64]. From the literature [60,65], the redox responses of PPy in neutral media are between −0.4 and 0.5 V vs. (Ag/AgCl).