Halide‐Based Materials and Chemistry for Rechargeable Batteries

Rechargeable batteries are considered one of the most effective energy storage technologies to bridge the production and consumption of renewable energy. The further development of rechargeable batteries with characteristics such as high energy density, low cost, safety, and a long cycle life is required to meet the ever-increasing energy-storage demands. This Review highlights the progress achieved with halide-based materials in rechargeable batteries, including the use of halide electrodes, bulk and/or surface halogen-doping of electrodes, electrolyte design, and additives that enable fast ion shuttling and stable electrode/electrolyte interfaces, as well as realization of new battery chemistry. Battery chemistry based on monovalent cation, multivalent cation, anion, and dual-ion transfer is covered. This Review aims to promote the understanding of halide-based materials to stimulate further research and development in the area of high-performance rechargeable batteries. It also offers a perspective on the exploration of new materials and systems for electrochemical energy storage.