In situ growth of MnO nanoparticles on accordion-like TiCT MXene for advanced aqueous Zn-Ion batteries.

Manganese-based cathodes are competitive candidates for state-of-the-art aqueous zinc-ion batteries (AZIBs) because of their easy preparation method, sufficient nature reserve, and environmental friendliness. However, their poor cycle stability and low rate performance have prevented them from practical applications. In this study, MnO nanoparticles were formed in situ on the surface and between the interlayers of TiCT MXene, which was pretreated by the intercalation of K ions.