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Derivation of transmission line model from the concentrated solution theory (CST) for porous electrodesZelič, Klemen ; Katrašnik, Tomaž ; Gaberšček, MiranIt has been shown previously that the governing equations defining continuum level processes in electrochemical cells can be mapped into appropriate extended equivalent circuits, also known as ... transmission line models (TLMs). Here we present a derivation which results in direct construction of a TLM from the widely used concentrated solution theory (CST) for porous electrodes originally proposed by Newman. The final result of derivation is a set of equations that directly connect the main parameters of CST for porous electrode (electrolyte conductivity, transport number, concentration, thermodynamic factor, chemical diffusion coefficient, porosity) and the main elements of corresponding TLM (resistances of active and inactive ions and chemical capacitance). The constructed TLM is applied to three standard porous electrode cases found in devices such as batteries, fuel cell and supercapacitors: insertion electrodes, faradic reaction at electrode-electrolyte interface and blocking electrodes. For all three cases, the derived TLMs are justified by a direct comparison of their output with the output of the corresponding analytical expression for impedance response of CST for porous electrodes.Vir: Journal of the electrochemical society [Elektronski vir]. - ISSN 1945-7111 (Vol. 168, no. 7, 2021, str. [1-12])Vrsta gradiva - e-članekLeto - 2021Jezik - angleškiCOBISS.SI-ID - 70090755
Avtor
Zelič, Klemen |
Katrašnik, Tomaž |
Gaberšček, Miran
Teme
Li-ion battery |
equivalent circuit model |
transmission line model |
porous electrode |
concentrated solution theory |
electrochemical impedance spectroscopy |
Li-ionska baterija |
model nadomestnega vezja |
tranzmisijska linija |
porozna elektroda |
teorija koncentrirane raztopine |
elektrokemična impedančna spektroskopija
Vnos na polico
Trajna povezava
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Zelič, Klemen | 35386 |
Katrašnik, Tomaž | 23468 |
Gaberšček, Miran | 00582 |
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