THERMODYNAMIC ANALYSIS OF LITHIUM-ION BATTERY STORAGE SYSTEM

Abstract

The most promising energy storage systems are lithium-ion batteries (LIBs) owing to its high energy and power density. The electrochemical lithium storage in LIB is investigated in terms of thermodynamic functions such as free energy, entropy, enthalpy and heat capacities. These thermodynamic functions are influenced by various factors such as temperature, porosity, defects in electrode materials, solvation of Li+ ions by electrolyte solvents, double layer formation between electrode/electrolyte, phase transition during cycling and coexistence of Li intercalation reaction in single-phase and multiphase etc. Herein, we have analyzed the thermodynamics of overall electrochemical lithium storage and this analysis helpful to explore the stable electrode and electrolyte materials for next generation of LIBs and beyond.