In situgrowth of amorphous vanadium oxide nanospheres on carbon cloth as free-standing cathodes used in high performance aqueous zinc-ion batteries

3D amorphous VO x microspheres were in situ grown on alkali-treated carbon cloth (VO x MSs@ACC) as cathodes for AZIBs. VO x MSs@ACC cathodes show excellent specific capacity and cycling performance due to rich active sites and fast ion transport rates.