Hydrodynamic and Electrochemical Analysis of Compression and Flow Field Designs in Vanadium Redox Flow Batteries

This numerical study investigates compression and flow field design effects on electrode behaviour in vanadium redox batteries (VRFBs). Through 3D simulations analysis of various designs, including conventional, serpentine, interdigitated, parallel configurations, this three scenarios: uncompressed, non-homogeneously compressed, homogeneously compressed electrodes. Hydrodynamic electrochemical analyses reveal the impact velocity, pressure, current density, overpotential, charge–discharge performance. Interdigitated is found to display lowest charging potential highest discharging among all fields under scenarios. Moreover, uncompressed condition shows conservative estimates an average 1.3647 V 1.3231 case interdigitated field, while show 1.3922 1.3777 V, 1.3019 1.3224 respectively. Results highlight significance non-uniform modelling analysing performance VRFBs as it a more realistic representation compared no-compression or homogeneous The findings work provide insights for optimising VRFB by considering design.