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1 PublicationCell voltage model for Li-Bi liquid metal batteries
Weber, N.; Duczek, C.; Horstmann, G. M.; Landgraf, S.; Nimtz, M.; Personnettaz, P.; Weier, T.; Sadoway, D. R.
Lithium-bismuth bimetallic cells are amongst the best explored liquid metal batteries. A simple and fast one-dimensional cell voltage model for such devices is presented. The equilibrium cell potential is obtained from a complex two-dimensional fit of data drawn from multiple studies of equilibrium cell potential and rendered congruent with the phase diagram. Likewise, several analytical and fit functions for the ohmic potential drop across the electrolyte are provided for different battery geometries. Mass transport overpotentials originating from the alloying of Li into Bi are modelled by solving a diffusion equation, either analytically or numerically, and accounting for the volume change of the positive electrode. The applicability and limitations of the model are finally illustrated in three distinct experimental settings.
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Cell voltage model for Li-Bi liquid metal batteries
ROBIS: 33890 HZDR-primary research data are used by this (Id 33058) publication
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Applied Energy 309(2022), 118331
DOI: 10.1016/j.apenergy.2021.118331
Cited 14 times in Scopus
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Permalink: https://www.hzdr.de/publications/Publ-33058
Publ.-Id: 33058