Dynamic electrochemical impedance spectroscopy of the adsorption and relaxation of polyaniline chains during potentiodynamic redox transformations

Spectroelectrochemical Analysis of Charge Carriers as a Way of Improving Poly(p-phenylene)-Based Electrochromic Windows

“…ESR spectroscopy shows the formation of unpaired electrons, such as radicals, generated in the organic structure. − During ESR measurement with a coupled potentiostat, formation of polaron and their transformation into bipolaron and biradical cation could be observed as a function of potential. ESR measurements are usually carried out in potentiostatic measurements because there are problems associated with counterion diffusion into the polymeric network. − There are only a few techniques in which this can be applied to a dynamic electrochemical process like cyclic voltammetry. ,− The second technique which allows the definition of indirectly generated charge carriers is UV–vis–NIR spectroelectrochemistry, which has been described in a few publications. − …”

Facile Fabrication of Polyaniline/Pristine Graphene–Bacterial Cellulose Composites as High-Performance Electrodes for Constructing Flexible All-Solid-State Supercapacitors

“…The CV curve of PG has a rectangular shape suggesting its double-layer capacitance character, while the CV curve of PANI showed redox peaks attributed to the transitions between the leucoemeraldine–emeraldine structure and the emeraldine–pernigraniline structure, respectively. 33 , 34 After the addition of graphene, the CV curve of the PANI/PG–BC4 composite possessed a larger integral area than PANI–BC3, suggesting the enhanced areal capacitance. The shape of the CV curve of PANI/PG–BC4 under various scan rates from 10 to 50 mV/s showed no significant change, confirming a quick response to redox reactions.…”

An ex situ and operando analysis of thiourea consumption and activity during a simulated copper electrorefining process

“…Unfortunately, neither the data fit, nor the parameter values were acceptable for this model. In literature, several EECs are applied to describe systems with electrode reactions and adsorption: The presence of an adsorption layer can be modeled via a Frumkin-Melik-Gaikazyan style model [49,50] and Gabrielli [27] introduced a nested circuit containing three capacitive time constants, to name few. As Gabrielli [27] comments on the latter circuit, it is difficult to connect physical phenomena to the different parameters.…”