Dynamic impedance spectroscopy using dynamic multi-frequency analysis: A theoretical and experimental investigation

Koster, Dominique; Du, Guoqing; Battistel, Alberto; Mantia, Fabio La

doi:10.1016/j.electacta.2017.06.060

Cited by 44 publications

(59 citation statements)

References 24 publications

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“…This cell geometry has significant advantages such as reproducibility, minimization of the current line distribution, insensitivity to the position of the RE . Electrochemical measurements were done using Bio‐Logic SP300 Potentiostat which was connected to a two channel oscilloscope 4262 PicoScope (Pico technology) as well as to a two channel 33512b waveform generator (Keysight) where home‐made MATLAB scripts (release 2015b from the Math Works Inc.) were used to create the desired potential profile of the multi‐sine signal as described in reference …”

Section: Methodsmentioning

confidence: 99%

“…and the multi‐sine generated by the arbitrary waveform generator were added. The quasi‐triangular wave was already described in previous publication of our research group . The current range used for all experiments was 1 mA.…”

Section: Methodsmentioning

confidence: 99%

“…200 impedance spectra were fitted for each cation (100 each for cathodic and anodic polarization); 20 spectra per cation are shown in the supporting information. Details of the design of the frequency distribution of the multi‐sine used in this work is described in detail elsewhere . The data evaluation was performed using suitable home‐made MATLAB scripts.…”

Section: Methodsmentioning

confidence: 99%

“…Since the system is time variant, the accuracy of the Fourier transform is rather low, due to the presence of spectral leakage . The interferences increase with the degree of non‐stationarity and non‐linearity of the system, as well as with a decrease in frequency of the multi‐sine . Hence, Stoynov et al.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the concept of DMFA and analysis of non‐stationary impedance using classic electrical equivalent circuit (EECs) was reported by our research group . Subsequently, it was shown that it is possible to obtain high quality impedance spectra by optimizing the parameters in the multi‐sine such as frequency distribution and distance between successive frequencies as well as by a proper choice of a quadrature filter . This means that, instead of analyzing the data in pieces in the time domain, a large amount of data (millions of points) are transformed in the frequency domain, where they are then separated in different frequency intervals and properly filtered .…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Impedance Spectroscopy of Nickel Hexacyanoferrate Thin Films

et al. 2019

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Dynamic multi‐frequency analysis (DMFA) is capable of acquiring high‐quality frequency response of electrochemical systems under non‐stationary conditions in a broad range of frequencies. In this work, we used DMFA to study the kinetics of (de‐)intercalation of univalent cations (Na+ and K+) in thin films of nickel hexacyanoferrate (NiHCF) during cyclic voltammetry. For this system, the classic stationary electrochemical impedance spectroscopy fails due to the instability of the oxidized form of NiHCF. We are showing that such spectra can be fitted with a physical model described by a simple two‐step intercalation mechanism: an adsorption step followed by an insertion step. The extracted kinetic parameters are depending on the state of charge as well on the nature of the inserted cation.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dynamic Impedance Spectroscopy of Nickel Hexacyanoferrate Thin Films

et al. 2019

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Solid–Electrolyte Interphase at Positive Electrodes in High‐Energy Li‐Ion Batteries: Current Understanding and Analytical Tools

Zampardi

Mantia

2020

Batteries & Supercaps

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The operating potentials of the Li‐ion batteries active materials usually exceed the stability window of the electrolyte, leading to its irreversible reduction or oxidation. Often, as an effect of these side reactions, a surface layer is deposited onto the electrodes’ materials. These surface layers play a pivotal role on the battery performance, rate capability, irreversible charge losses, and safety. Despite their importance, such interphases are difficult to analyse because of their small thickness and sensitive chemical composition. With this review, the authors intend to describe the already established analytical tools for the analysis of the interphase layers formed at the electrodes’ surface in Li‐ion batteries, together with the novel, unconventional ones under current development, focusing on the strengths and weak points of each technique. Particular attention will be given to the surface layers formed onto the positive electrodes through a summary of their current understanding. This is of main importance since understanding the interphase at the positive electrode side could enable the next generation of high energy Li‐ion batteries.

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Measurement and Analysis of Dynamic Impedance Spectra Acquired During the Oscillatory Electrodissolution of p‐Type Silicon in Fluoride‐Containing Electrolytes

et al. 2018

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Using dynamic multifrequency analysis (DMFA), we investigated the oscillatory reaction dynamics that govern the anodic electrodissolution of p‐type silicon in fluoride‐containing electrolytes, in which the anodization of silicon is followed by the chemical etching of the oxide layer. By applying a constant voltage to the silicon electrode, stable oscillations are found in the presence of an external resistance. The dynamic impedance spectra acquired through DMFA were fitted to a suitable electrical equivalent circuit. In doing so, it was possible to investigate the temporal evolution of the kinetic parameters throughout the formation and dissolution of the silicon oxide.

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Dynamic impedance spectroscopy using dynamic multi-frequency analysis: A theoretical and experimental investigation

Cited by 44 publications

References 24 publications

Dynamic Impedance Spectroscopy of Nickel Hexacyanoferrate Thin Films

Dynamic Impedance Spectroscopy of Nickel Hexacyanoferrate Thin Films

Solid–Electrolyte Interphase at Positive Electrodes in High‐Energy Li‐Ion Batteries: Current Understanding and Analytical Tools

Measurement and Analysis of Dynamic Impedance Spectra Acquired During the Oscillatory Electrodissolution of p‐Type Silicon in Fluoride‐Containing Electrolytes

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