Cathode Materials for Aqueous Zinc‐ion Batteries

Manganese-based cathode materials of aqueous zinc-ion batteries have become more attractive to scientific researchers. Vanadium-based compounds have been extensively applied as zinc storage materials because of their low cost, abundant resources, and multiple oxidation states. There are many types of vanadium-based compounds due to the diversity of the V–O coordination polyhedron structure, which receives extensive attention for AZIB. Morphology control has been considered an effective strategy for designing advanced cathode materials in AZIBs. The chapter introduces defect engineering strategies for tuning the electrochemical performance of vanadium-based electrode materials, combined with several representative examples. It also introduces three effective interlayer intercalation strategies, including ion intercalation, H 2 O intercalation, and conductive polymer intercalation. Prussian blue/Prussian blue analogs cathode material has a wider application prospect because of its low cost, easy synthesis, and environmental friendliness.