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Scientific issues of zinc-bromine flow batteries and mitigation strategies.

Authors :: Rana M
Alghamdi N
Peng X
Huang Y
Wang B
Wang L
Gentle IR
Hickey S
Luo B
Source :: Exploration (Beijing, China) [Exploration (Beijing)] 2023 Jul 20; Vol. 3 (6), pp. 20220073. Date of Electronic Publication: 2023 Jul 20 (Print Publication: 2023).
Publication Year :: 2023
Abstract: Zinc-bromine flow batteries (ZBFBs) are promising candidates for the large-scale stationary energy storage application due to their inherent scalability and flexibility, low cost, green, and environmentally friendly characteristics. ZBFBs have been commercially available for several years in both grid scale and residential energy storage applications. Nevertheless, their continued development still presents challenges associated with electrodes, separators, electrolyte, as well as their operational chemistry. Therefore, rational design of these components in ZBFBs is of utmost importance to further improve the overall device performance. In this review, the focus is on the scientific understanding of the fundamental electrochemistry and functional components of ZBFBs, with an emphasis on the technical challenges of reaction chemistry, development of functional materials, and their application in ZBFBs. Current limitations of ZBFBs with future research directions in the development of high performance ZBFBs are suggested.<br />Competing Interests: The authors declare no conflict of interest.<br /> (© 2023 The Authors. Exploration published by Henan University and John Wiley & Sons Australia, Ltd.)