There are two famous models for interfacial polarization: namely, the Warburg or "diffusive" impedance, which occurs at the electrode-electrolyte interface or inside the electrode, and the Maxwell-Wagner-Sillars interfacial polarization, which arises by space-charge buildup at the interface of two ...
Transitioning from bulk to thin film WO3does not necessarily lead to a proportional cost increase. Advances in synthesis techniques, including nano structuring and the creation of hybrid films, have aimed to boost WO3’s performance. These methods ensure efficient material use, potentially offsetting t...
The corrosion behavior was analyzed by potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS), and localized electrochemical characteristics were determined by scanning electrochemical microscopy (SECM). The results evidenced that the addition of glass improved the corrosion ...
Warburg impedance resulted from the reaction at the passivated zinc surface because of the accumulation of oxide/hydroxide layers37. EIS results also showed that the diameter of the semicircle increased when DMSO was added to the electrolyte due to the formation of a passive layer of DMSO over ...
The internal resistance evolutions of the two samples with different Cu current collectors were also analyzed by electrochemical impedance spectrum (EIS). As shown in Fig. S6, the Nyquist plots are composed of a semicircle followed slope lines, which correspond to the charge-transfer resistance and...
not all hospitals have experts in the use of this instrumentation applied to tumours [5,6]. However, there is a clinical need for safe and accurate approaches to defining tumour margins intraoperatively [7]. Molecular image-guided surgery enables the differentiation of tumour and nearby normal ti...
Impedance modelIn this study, an impedance model represented as an equivalent electrical circuit (EEC) and comprised of a transmission line circuit and a frequency dispersion Warburg component is developed for the study of the electrochemical impedance spectroscopy (EIS) of Li-ion batteries. The ...
Impedance modelIn this study, an impedance model represented as an equivalent electrical circuit (EEC) and comprised of a transmission line circuit and a frequency dispersion Warburg component is developed for the study of the electrochemical impedance spectroscopy (EIS) of Li-ion batteries. The ...
Hexagonal plate-like grains of different sizes were observed, and samples sintered at 1300˚C showed large-size grains. Porosity was observed to decrease with La doping. Impedance spectroscopy reveals that Maxwell-Wagner-type polarisation occurs with the relaxation of mobile charges having long-...
This remarkable performance is attributed to the high polarizability and mixed valence cations, especially in V5+-rich ceramics, compared to the Dy3+-rich com- positions with a reduced conductivity of 0.010 to 0.097 (Ω cm)−1. The Nyquist plots indicate that impedance decreases ...