Metal–Organic Frameworks: Multifunctional Materials for High-Performance Zn-Halogen Batteries

Aqueous zinc batteries are gaining attention as promising alternatives to Li-ion systems, owing to the increased need for safe and cost-effective energy storage. Aqueous Zn-halogen batteries are particularly important because of their low cost and the abundance of precursors. However, critical challenges, such as the shuttle effect, sluggish redox kinetics, and dendrite growth, impede their practical development. Metal-organic frameworks (MOFs) with high porosity, ease of functionalization, and stability offer a multifunctional approach to overcome these limitations. This review systematically examines the advancements in MOF-based Zn-halogen batteries, focusing on their roles in different components of the…