Iodine chemical energy storage investment

Are zinc iodine batteries a promising energy storage device?

Zinc–iodine batteries are promising energy storage devices with the unique features of aqueous electrolytes and safer zinc. However, their performances are still limited by the polyiodide shuttle and the unclear redox mechanism of iodine species.

Why are metal iodine batteries important?

Due to the natural abundance of iodine, cost-effective, and sustainability, metal-iodine batteries are competitive for the next-generation energy storage systems with high energy density, and large power density.

Is iodine a promising material for grid-scale energy storage?

Capitalizing on the high solubility of the I − /I 3− redox species, iodine has become one of the most promising materials for grid-scale energy storage. Zhao et al. proposed a cathode-flow-through mode of Li–I 2 battery by using an aqueous KI solution containing I 3− /I − as the catholyte in one half-cell .

Are rechargeable metal iodine batteries a good choice?

Further developments and innovations in advanced designs of metal iodide batteries are proposed. Rechargeable metal-iodine batteries (MIBs) have attracted tremendous attention, due to their merits of high-rate performance, remarkable energy density, and low cost.

Are metal-iodine batteries suitable for next-generation electrochemical energy storage systems?

Based on the works described, important and targeted guidelines in this field are provided. Metal-iodine batteries (MIBs) hold practical promise for next-generation electrochemical energy storage systems because of the high electrochemical reversibility and low cost.

Why do aqueous iodine-cathode batteries self-discharge?

Originated from the dissolubility of iodine and iodine species in the aqueous environment of the batteries, self-discharge behavior is common for the aqueous iodine-cathode battery systems 3, 4, 5, 6. How to reduce the self-discharge rate effectively has been an intriguing but challenging issue.