Zinc iodine single flow battery concept come out sharply higher energy density

Recently, the researcher at the Chinese Academy of Sciences dalian by compound Li Xianfeng, zhang hm team innovation put forward single flow battery is zinc, iodine, single zinc iodine flow of electrolyte the utilization rate of nearly 100%, greatly improves the energy density of the battery. Related research results were published online on energy and environmental science.

large-scale energy storage technology is the key technology to realize large-scale renewable energy use, flow battery has high safety, long cycle life, high efficiency, etc, is one of the first choice for large-scale energy storage technology. And zinc iodine liquid flow cell is a kind of flow battery technology, because has the advantages of the high energy density and environmental friendly, is more and more attention in recent years.

in previous research, the research team by optimizing the electrolyte composition and membrane material, improving the zinc iodine flow battery cycle life and power density. But, the problem of relatively low utilization rate of electrolyte is still to be solved.

then, the team puts forward the concept of zinc iodine single flow battery. Unlike traditional zinc iodine flow batteries, zinc, iodine single flow battery anode side only has flow circulation system, is very solid, so can charge to solid iodine elemental iodine ions, makes the utilization rate of the electrolyte close to 100%, significantly improves the energy density of the battery, and at the same time improve the zinc iodine single flow battery power density. The work for the development of new high energy density flow battery system provides an important reference.