Abstract
Abstract Redox 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 90s), 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 use of redox-mediated process to reach higher energy density than conventional RFB.
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