The traditional design involves the integration of redox-active moieties in the main chain by conjugation with aromatic linkers. On the other hand, such design has inevitable drawbacks for providing stable redox potentials, due to large charge repulsion from the generated delocalized polarons and bipolarons in the backbone, therefore leading to a low battery performance. Very recently, we reported a rationally designed conjugated polymer with pendant benzoylpyridinium (BMP) redoxactive units that simultaneously reduce the solubility of the materials and mitigate the charge repulsion to enhance the overall battery performance. The carbonyl linker could effectively minimize the overlap of the HOMO and LUMO orbitals in the materials, allowing the redox centers to operate in a relatively interference-free manner.