Interpretation of electrochemical impedance spectroscopy (EIS) circuit model for soils

Han, Peng; Zhang, Ya feng; Chen, Youhua; Bai, Xuejuan

doi:10.1007/s11771-015-2980-1

Cited by 35 publications

(12 citation statements)

References 19 publications

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“…A link between this subsection and the previous one is that these materials are often electrochemically characterised and evaluated for their use in the fabrication of the discussed power sources. Besides the few large categories discussed here, EIS has also been applied for various miscellaneous material characterization studies, such as soils [97], polymers [98]- [100], alloys [101], and others.…”

Section: Materials Sciencementioning

confidence: 99%

Equivalent Electrical Circuits and Their Use Across Electrochemical Impedance Spectroscopy Application Domains

2022

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When studying electrochemical systems, EIS practitioners face the challenge of choosing a relevant equivalent electrical circuit to analyze their measurement data and interpreting the role of its components. In this review, we take a closer look at the use of equivalent electrical circuits (EEC) across various application domains. We aim to aid EIS practitioners in determining and evaluating their EEC-based data analysis methodology in light of recent progress from all EIS application domains. We review EEC usage and its interpretation while additionally providing software to automatically search for equivalent electrical circuits from the relevant application domain literature that fit EIS measurements supplied by users. Finally, we make a comparison of the impedimetric behaviour and circuit modelling approaches of a range of different electrochemical systems and discuss some complementary EIS data analysis strategies.

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Section: Materials Sciencementioning

confidence: 99%

Equivalent Electrical Circuits and Their Use Across Electrochemical Impedance Spectroscopy Application Domains

2022

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“…Curve fittings were also confirmed in Bode plots ( Figure S15 ). Two constant phase elements (CPE) were introduced for the electrode double layer (CPE1) and the sample surface (CPE2) due to the porous property of the samples, as previously suggested [ 68 , 69 ]. The Q 0 value of CPE2, as analogous to capacitance, was used to estimate the electric capacitance of the Mix samples since they had n values larger than 0.8 [ 70 ].…”

Section: Resultsmentioning

confidence: 99%

The Emergence of Extracellular Electron Mediating Functionality in Rice Straw-Artificial Soil Mixture during Humification

Pham

Kasai

et al. 2022

IJERPH

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This study aimed to elucidate the origin of extracellular electron mediating (EEM) functionality and redox-active center(s) in humic substances, where they are ubiquitously distributed. Here, we show the emergence of EEM functionality during the humification of rice straw in artificial soil (kaolin and sand) with a matric potential of −100 cm at 20 °C for one year. We used the dechlorination activity of an EEM material-dependent pentachlorophenol-dechlorinating anaerobic microbial consortium as an index of the EEM functionality. Although rice straw and its mixture with artificial soil did not initially have EEM functionality, it emerged after one month of humification and increased until six months after which the functionality was maintained for one year. Chemical and electrochemical characterizations demonstrated that the emergence and increase in EEM functionality were correlated with the degradation of rice straw, formation of quinone structures, a decrease in aromatic structures, an increase in nitrogenous and aliphatic structures, and specific electric capacitance during humification. The newly formed quinone structure was suggested as a potential redox-active center for the EEM functionality. These findings provide novel insights into the dynamic changes in EEM functionality during the humification of organic materials.

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“…2. Bulk material equivalent circuits (a) for pure electrolyte adapted from the work in [23] and (b)-(f) for soils adapted from the works in [39], [40], [43], [42], and [44], respectively.…”

Section: A Electrode-electrolyte Interface Impedancementioning

confidence: 99%

Equivalent Circuit Models for Soils and Aqueous Solutions Under 2-Terminal Test Configuration

Desai

Harid

Griffiths

et al. 2023

IEEE Trans. Electromagn. Compat.

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Numerous circuit models have been proposed to represent the electrode-electrolyte interface (EEI) impedance and bulk medium impedance of conducting media. Following a review, two suitable models are constructed to represent the behavior of conduction in electrolytes and soils, respectively. Both models incorporate a constant phase element in parallel with an apparent Faradaic resistance, which is found to reproduce the EEI behavior accurately. For the electrolyte model, a single parallel R-C branch is added to represent the impedance of the bulk medium, whereas for the soil model, an equivalent ladder network of R-C branches is found to be suitable. Experimentally obtained electrolyte and soil impedance data based on 2-terminal impedance spectroscopy over a frequency range of 10 mHz to 10 MHz with variable current density are compared with values obtained from the models and where model parameters are determined by a curve fitting routine. The effects of electrolyte concentration, soil moisture, and electrode material are analyzed, and the models help to illustrate clearly how the EEI effect dominates at low frequencies while the intrinsic characteristics of the test medium prevails at high frequencies. The models are extended to account for soil-electrolyte impedance dependence on current density, which is most evident at low frequencies. The extent of the impedance plateau region is described by limiting upper and lower frequencies.

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Interpretation of electrochemical impedance spectroscopy (EIS) circuit model for soils

Cited by 35 publications

References 19 publications

Equivalent Electrical Circuits and Their Use Across Electrochemical Impedance Spectroscopy Application Domains

Equivalent Electrical Circuits and Their Use Across Electrochemical Impedance Spectroscopy Application Domains

The Emergence of Extracellular Electron Mediating Functionality in Rice Straw-Artificial Soil Mixture during Humification

Equivalent Circuit Models for Soils and Aqueous Solutions Under 2-Terminal Test Configuration

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