Fetyan, A.; Benetho, B.P.; Alkindi, T.; Andisetiawan, A.; Bamgbopa, M.O.; Alhammadi, A.; El-Nagar, G.A.: Performance enhancement of vanadium redox flow battery with novel streamlined design: Simulation and experimental validation. Journal of Energy Storage 99 (2024), p. 113397/1-7
10.1016/j.est.2024.113397
Abstract:
Electrolyte utilization and the consequent concentration polarization significantly limit the potential increase in power density and contribute to electrode degradation in vanadium redox flow batteries during cycling. This study investigates a novel curvature streamlined design, drawing inspiration from natural forms, aiming to enhance the performance of vanadium redox flow battery cells compared to conventional square and rectangular flow-through cell designs. The simulated 3D single-cell model shows a notably superior uniformity in both current and species' concentration distribution within the streamlined design compared to the square and rectangular shapes. Experimental analysis conducted on 3D-printed flow frames demonstrated 2 % enhanced energy efficiency and 47 % improved capacity when compared to rectangular design at 150 mA cm−2, all achieved with minimal increase in pressure drop.