Thermodynamic equations for a model lithium-ion cell

Fundamentals of classical thermodynamics of electrochemical systems have be en employed to formulate mathematical equations for a model lithium-ion and lithium electrode concentration cell. Equations have been formulated to de termine the energetic lithium interaction coefficients in the solid lithium -ion electrode phases and the salt mean activity coefficient in the electro lytic solution used in the model cell from the measured experimental data. In addition, a mathematical equation to predict the open-circuit voltage of the model cell for the case of differing electrolyte compositions in its p orous electrodes has been developed. (C) 1999 Elsevier Science Ltd. All rig hts reserved.