Flow field designs developed by comprehensive CFD model decrease system costs of vanadium redox-flow batteries

Abstract Different flow field designs are known for vanadium redox-flow batteries (VFB). The best possible design to fulfil a variety of target parameters depends on the boundary conditions. Starting from an exemplary interdigitated design, its channel and land dimensions varied investigate impact pressure drop, volume, uniformity limiting current density. To find desirable compromise between these several partly contrary requirements, total costs VFB system evaluated in dependence field’s dimensions. composed electrolyte, production component costs. For those, technique (injection moulding or milling), pump nominal power density as well depth discharge determined. Finally, achieved, which lead significantly reduced presented method is applicable process other fields types batteries. Graphical abstract