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

This review introduces the application and research status of various vanadium-based cathode materials and interlayer engineering of pre-intercalation strategy in AZIBs. In addition, we proposed future challenges and directions for developing high-performance layered vanadium-based electrode materials.

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.

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