Physics-based 0D-U-I-SoC cell performance model for aqueous organic redox flow batteries

Aqueous organic redox-flow batteries are an emerging technological solution in the field of grid-scale energy storage, owing to their long lifetime, safety, chemical flexibility, potential for low cost and environmental friendliness. In this work we present a physics-based dimensionality reduced model performance prediction aqueous redox flow batteries. The allows fast evaluations cell voltage power density, which expressed explicitly terms electric current density state charge. takes into consideration important phenomena, such as activation concentration overpotentials electrodes well non-negligible electro-osmotic drag water through membrane. A sensitivity analysis indicates influence various parameters at different densities on predicted voltage. found formal potentials ohmic resistance be most critical prediction. Experimental parameterization validation cycling polarization experiments revealed good agreement with within range validity due simplifying assumptions.