1 research outputs found
Effect of the Ion, Solvent, and Thermal Interaction Coefficients on Battery Voltage
In order to increase the adoption of batteries for sustainable
transport and energy storage, improved charging and discharging capabilities
of lithium-ion batteries are necessary. To achieve this, accurate
data that describe the internal state of the cells are essential.
Several models have been derived, and transport coefficients have
been reported for use in these models. We report for the first time
a complete set of transport coefficients to model the concentration
and temperature polarization in a lithium-ion battery ternary electrolyte,
allowing us to test common assumptions. We include effects due to
gradients in chemical potentials and in temperature. We find that
the voltage contributions due to salt and solvent polarization are
of the same order of magnitude as the ohmic loss and must be taken
into account for more accurate modeling and understanding of battery
performance. We report new Soret and Seebeck coefficients and find
thermal polarization to be significant in cases relevant to battery
research. The analysis is suitable for electrochemical systems, in
general