Redox flow batteries: physics-based cell modeling

The presented chapter describes the main governing equations regulating redox flow battery operation and the methodology to simulate cell performance and electrochemical impedance spectroscopy. An overview of the different physics-based modeling approaches is reported: starting from a fully 3D approach, reduced 2D-1D models are subsequently presented and then the derivation of analytical models is explained. Finally, some model results considering vanadium redox flow battery are reported for each of the different modeling approach.