Pre‐intercalation Strategies to Layered Vanadium‐based Electrode Materials for Aqueous Zinc Batteries

Abstract Aqueous zinc‐ion batteries (AZIBs) have become the most potential alternatives to lithium‐ion batteries (LIBs) due to their intrinsic safety, convenient operation, and environmentally friendly characteristics. Layered vanadium‐based compounds with two‐dimensional ion diffusion channels attract extensive attentions as cathodes for AZIBs. However, they usually suffer from dissolution and large volume change during charging/discharging. Recently, the pre‐insertion strategy of guest ions or molecules into the host has provided an effective solution. In this review, we first introduce the application and research trends of vanadium‐based cathode materials for AZIBs. Then, the interlayer engineering of the pre‐intercalation strategy is emphatically summarized. Finally, we propose future challenges for developing high‐performance layered vanadium‐based electrode materials.