Abstract
Key words: flow battery, zinc based, energy storage, prospects and challenges Zn2+/Zn redox couple attracts more and more attention in flow battery due to its characteristics of high solubility, low cost electrochemical reversibility and environmental friendly. Until now, many zinc based flow battery systems such as zinc-bromine1, zinc- nickle and zinc-iron2,3 etc. have been investigated, which have very promising prospect for stationary energy storage. Among them, zinc-bromine is one of the most successfully example of zinc based flow battery system, while zinc nickle and zinc iron systems have obtained tremendous developments recently. At the same time, many new zinc based systems such as zinc iodine have been proposed and demonstrated great advantages in some aspects such as energy density. However, secondary batteries that use zinc electrodes typically exhibit short lifetimes, because of problems with undesirable zinc morphology especially zinc dendrites, that form during charge. Hence, the challenge is to deposit a compact, uniform and free of dendrite layer that ensure a long cycle secondary negative electrode. In recent years, DICP devoted to Zinc based batteries and implemented several demonstrations on zinc bromine flow batteries in different fields. Therefore, in this presentation we will introduce the research and development status of zinc based flow batteries at DICP.
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