Redox flow batteries membranes: Overview and advances
Five membranes with different ion-exchange capacity (IEC) were synthesized by varying the feed ratio of the DAPCl and PPO-Q. M1.7 membranes (Table 1, entry 16) with moderate membrane resistance and low crossover were found to display the best overall cell performance among the four tested membranes at a high current density of 80 mA cm −2, with