Iodine flow battery life

Can iodine batteries be used for energy storage?

Their high-energy density and iodide anion-rich electrolytes meet the demands of modern industries, enabling the initial large-scale application of zinc–iodine batteries for energy storage. However, storing electroactive substances in the electrolyte limits the utilization rate of iodine and reduces the battery's energy density.

Are zinc-iodine flow batteries safe?

Learn more. The growing demand for grid-scale energy storage calls for safe and low-cost solutions, for which zinc-iodine flow batteries (ZIFBs) are highly promising. However, their practical application is critically hindered by two issues: accumulation of insoluble solid iodine at the cathode and zinc dendrite growth at the anode.

Can iodine batteries be loaded with a substrate?

In practical applications, the conventional method for loading active materials in batteries is mixing and coating. However, due to the low sublimation temperature of iodine, the active material in zinc–iodine batteries can benefit from a substrate designed during the loading process, enabling mass production of zinc–iodine batteries.

Are aqueous zinc-iodine flow batteries suitable for large-scale storage?

Aqueous zinc-iodine flow batteries show potential in large-scale storage but face water imbalance-induced instability. Here, authors develop a tailored ionic-molecular sieve membrane that selectively intercepts hydrated ions, enabling stable high-capacity long cycling with low projected costs.