Recent Advances in Metal–Organic Frameworks for the Surface Modification of the Zinc Metal Anode: A Review

Abstract

Aqueous zinc ion batteries (AZIBs) are considered as one of the most promising energy storage technologies due to their advantages of being low in cost, high in safety, and their environmental friendliness. However, dendrite growth and parasitic side reactions on the zinc metal anode during cycling lead to a low coulombic efficiency and an unsatisfactory lifespan, which seriously hinders the further development of AZIBs. In this regard, metal–organic frameworks (MOFs) are deemed as suitable surface modification materials for the Zn anode to deal with the abovementioned problems because of their characteristics of a large specific surface area, high porosity, and excellent tunability. Considering the rapidly growing research enthusiasm for this topic in recent years, herein, we summarize the recent advances in the design, fabrication, and application of MOFs and their derivatives in the surface modification of the zinc metal anode. The relationships between nano/microstructures, synthetic methods of MOF-based materials, and the enhanced electrochemical performance of the zinc metal anode via MOF surface modification are systematically summarized and discussed. Finally, the existing problems and future development of this area are proposed.

Possibilities and challenges of cathode materials for Zn-ion batteries

“…These diagnostics can help identify safety issues before they escalate. 44 Safety concerns in cathode materials for zinc-ion batteries are a significant challenge, albeit one that is actively being addressed through ongoing research and innovation. While ZIBs offer improved safety compared to lithium-ion batteries, it is essential to continue developing safer cathode materials, advanced coatings, optimised electrolytes, and enhanced diagnostic tools to ensure the continued growth and adoption of this promising energy storage technology.…”