Abstract
This research provides a comprehensive analysis of the thermodynamic and transport properties of lithium hexafluorophosphate (LiPF6) in dimethyl carbonate (DMC), which are critical for the performance of lithium-ion batteries. We employed advanced techniques to precisely quantify density fluctuations, which we then systematically correlated with changes in salt concentration and temperature. This intricate relationship was explicated using a data fitting model, conforming to the tenets of Debye–Hückel theory. Through the application of concentrated-solution theory, our study explores the electrolyte's behavior by assessing three key transport properties: cation transference number, ionic conductivity, and thermodynamic diffusivity. This investigation helps elucidate the interactions between different species. Additionally, we describe three thermodynamic characteristics of the electrolyte's equilibrium: the thermodynamic factor, and the partial molar volumes for both the salt and the solvent. The findings offer a detailed insight into the dynamics of the electrolyte, establishing a foundation for improving electrolyte formulations in increasingly complex and concentrated systems.
Published Version
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