Analysis of Electrochemical Impedance Spectroscopy Data Using the Distribution of Relaxation Times: A Bayesian and Hierarchical Bayesian Approach

Total harmonic distortion based method for linearity assessment in electrochemical systems in the context of EIS

“…This transformation is performed for each excited frequency. Finally, once the signals have been transformed to the frequency domain, the total harmonic distortion of each signal can be determined using equations (3) and (4). Thus, the total harmonic distortion of the current signal ℋ and of the voltage signal ℋ is obtained for each excited frequency.…”

“…This electrochemical measurement technique has also been used in fields that are not traditionally linked to electrochemistry as enzymatic kinetics [24], cancer detection [25], biochemistry [26][27] and immunology [28][29] amongst others. The large spectrum of fields in which EIS has been applied is explained by the fact that this electrochemical method allows to deconvolve the different physic-chemical phenomena taking place in a given system [4]. This technique can be used both, in liquid systems [30][31] and solid systems [32][33].…”

“…In current days, electrochemical impedance spectroscopy (EIS) is one of the most used electrochemical techniques [1][2][3][4]. It has been applied to a wide range of different fields as fuel cells [5][6][7][8][9][10], batteries [11][12], coatings [13][14], electrochemical reaction kinetics [15], electrochemical sensors [16][17][18][19], supercapacitors [20][21][22] and dielectrics [23].…”

Electrochemical performance of La0.8Sr0.2MnO3 oxygen electrode promoted by Ruddlesden‐Popper structured La2NiO4

“…As can be seen, resolution of the Bode plot is not enough to distinguish different peaks, while the DRT curve successfully individualizes different peaks. In this study, all DRT curves are obtained with the help of DRT‐tools software, using radial basis function (RBF) for DRT function approximation and choosing Gaussian function as the RBF.…”

“…Eventually, the EIS data were fitted and simulated by equivalent circuit models (ECM) using ZsimpWin software. Analysis of distribution of relaxation times was also applied to examine the validity of selected equivalent circuit models using DRT‐tools software . A field emission scanning electron microscope (FE‐SEM, TESCAN) was used to investigate the microstructure of the cells.…”