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Modeling the Electrical Conductive Paths within All‐Solid‐State Battery Electrodes
Author(s) -
Sangrós Giménez Clara,
Helmers Laura,
Schilde Carsten,
Diener Alexander,
Kwade Arno
Publication year - 2020
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201900501
Subject(s) - tortuosity , electrode , electrical conductor , materials science , battery (electricity) , electrical resistivity and conductivity , conductivity , ionic conductivity , ionic bonding , microstructure , work (physics) , ion , composite material , chemical engineering , electrical engineering , chemistry , mechanical engineering , thermodynamics , power (physics) , engineering , physics , electrolyte , porosity , organic chemistry
All‐solid‐state batteries constitute a very promising energy storage device. Two very important properties of these battery cells are the ionic and the electrical conductivity, which describe the ion and the electron transport through the electrodes, respectively. In this work, a numerical method is presented to model the electrical conductivity, considering the outcome of discrete‐element method simulations and the intrinsic conductivities of both the active material particles and the conductive additive particles. The results are calibrated and validated with the help of experimental data of real manufactured electrodes. The tortuosity, which strongly influences the ionic conductivity, is also presented for the analyzed electrodes, taking their microstructure into account.