Tuning ionic conduction and structure stability of ammonium vanadate by intercalating polyaniline molecules for advanced aqueous zinc-ion batteries

Polyaniline is intercalated into NH 4 V 4 O 10 in situ to further enlarge interlayer spacing (13.59 Å) with improving Zn 2+ diffusion efficient, enhance electronic conductivity (0.001214 S cm −1 ) and stabilize crystal structure (92.23% over 5000 cycles).