Abstract Zinc‐based flow batteries are promising for sustainable energy storage owing to their high energy density and eco‐friendliness. When coupling with Mn 2+ /MnO 2 posolyte, the zinc‐manganese flow batteries promise an ultra‐low electrolyte cost (0. 0039 Ah −1). However, their practical application is limited by low areal capacity (200 cycles) at 30 mA cm −2, high areal capacity of 100 mAh cm −2 (130. 1 mWh cm −2) at 20 mA cm −2, representing one of the most stable zinc‐manganese flow batteries reported. This study provides an effective membrane design strategy for low‐cost and high‐energy‐density zinc‐based flow batteries.
Wu et al. (Fri,) studied this question.