SO3-COF@Al2O3 modified cathode electrode materials enhance the cycling ability of lithium sulfur batteries

The covalent organic framework (SO 3 -COF) was grown in situ on a modified Al 2 O 3 substrate, forming the composite material SO 3 -COF@Al 2 O 3 . This material effectively suppresses the shuttle effect of lithium polysulfides in Li–S batteries.