Homogenization of solid-electrolyte composite intercalation cathodes for energy storage systems

Abstract : We investigate well-accepted formulations describing charge transport in composite cathodes of batteries. Our upscaling of carefully selected microscopic equations shows three main features: (i) a novel set of six equations equipped with nine effective parameters which systematically couple the microscale to the macroscale; (ii) the coupling of transport and flow equations allows to account for three scales: pore scale, Darcy scale, and macroscale; (iii) the upscaled equations take phase separation during Li-intercalation into account as well as specific particle configurations. The wide range of applications and interest in energy storage devices make these results a promising tool to study the influence of the microstructure on current-voltage characteristics and to optimize cathode designs.
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https://hal.archives-ouvertes.fr/hal-01485524
Contributor : Markus Schmuck <>
Submitted on : Wednesday, March 8, 2017 - 11:34:49 PM
Last modification on : Wednesday, October 4, 2017 - 3:16:05 PM
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Markus Schmuck. Homogenization of solid-electrolyte composite intercalation cathodes for energy storage systems. 2017. ⟨hal-01485524⟩

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