Novel Model for Predicting the Electrical Conductivity of Multisalt Electrolyte Solutions

Saman Naseri Boroujeni, Bjørn Maribo-Mogensen, Xiaodong Liang, Georgios M Kontogeorgis*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

9 Downloads (Pure)

Abstract

This study presents a novel model to predict the electrical conductivity of multisalt electrolyte solutions by incorporating corrections to the ideal behavior due to relaxation and electrophoretic effects. The performance of the model is evaluated by comparing its predictions with the experimental data of 24 multisalt aqueous solutions. The comparison reveals good agreement for solutions with an ionic strength below 1 mol/L without adjusting any parameter to fit to the experimental data. However, the model tends to overestimate the molar conductivity at higher ionic strengths. The discrepancy is attributed to the neglect of the solvent structure and the formation of ion pairs. It has been speculated how the accuracy of the developed model could be improved in relation to these limitations. Furthermore, the performance of the model is rigorously tested in systems with ion complex formation. It has been demonstrated that when the distribution of ion complexes is calculated from a thermodynamic model and then used to predict the electrical conductivity with the developed model, a satisfactory level of accuracy is attained for these systems.
Original languageEnglish
JournalJournal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical
Volume8
Pages (from-to)536–550
ISSN1520-6106
DOIs
Publication statusPublished - 2024

Fingerprint

Dive into the research topics of 'Novel Model for Predicting the Electrical Conductivity of Multisalt Electrolyte Solutions'. Together they form a unique fingerprint.

Cite this