Gentil, SolèneReynard, DanickGirault, Hubert2020-01-072020-01-072020-01-072020-01-0710.1016/j.coelec.2019.12.006https://infoscience.epfl.ch/handle/20.500.14299/164393Redox flow batteries (RFBs) are among the most investigated technologies for large scale energy storage applications. Since the first commercialization of all-vanadium RFB (in the early 90’s), the technology has evolved towards the development of new systems. This review focuses on three innovative concepts including aqueous organic RFB (AO-RFB), dual-circuit RFB and redox solid booster-based RFB. We will highlight the recent advances in the last five years and discuss the main challenges encountered. Particularly, we focused on the utilization of redox-mediated process to reach higher energy density than conventional RFB.aqueous organic redox flow batterydual-circuit redox flow batteryredox solid boosterredox flow batteryRFBtext::journal::journal article::review article