N-Heteroaromatic fused-ring cyanides extended as redox polymers for high rate capability aqueous zinc-ion battery

Extension of N -heteroaromatic fused-ring cyanides into redox polymers as cathode is demonstrated for high rate capability aqueous zinc-ion batteries. A maximum specific capacity of 190 mA h g −1 is acheived with over 58% retention from 0.3 to 20 A g −1 .