Are zinc-bromine flow batteries suitable for large-scale energy storage?

Zinc-bromine flow batteries (ZBFBs) offer great potential for large-scale energy storage owing to the inherent high energy density and low cost. However, practical applications of this technology are hindered by low power density and short cycle life, mainly due to large polarization and non-uniform zinc deposition.

What are non flow aqueous zinc-bromine batteries?

Non-Flow aqueous zinc-bromine batteries (AZBBs) have gained significant attention owing to their reachable properties, e.g. low cost and high energy density.

What are aqueous zinc–bromine batteries?

Aqueous zinc–bromine batteries (ZBBs) are highly promising because of the advantages of safety and cost. Compared with flow ZBBs, static ones without the assistance of pumping and tank components possess decreased cost and increased energy density and efficiency.

What are zinc-bromine flow batteries?

In particular, zinc-bromine flow batteries (ZBFBs) have attracted considerable interest due to the high theoretical energy density of up to 440 Wh kg−1 and use of low-cost and abundant active materials [10, 11].

Are Zn-based flow batteries reversible?

Consequently, the modified electrode-based zinc-bromine flow batteries demonstrate a cumulative plating capacity (23 Ah cm −2) over 2300 h with an average Coulombic efficiency of over 97.4%. This work contributes insights into the design of highly reversible Zn electrode in Zn-based flow batteries.

Are static aqueous Zn//Br2 batteries practical?

Overall, static aqueous Zn//Br₂ batteries (AZBBs) represent a highly promising technology for balancing safety, cost-effectiveness, and electrochemical performance in energy storage field. Yet, their practical implementation faces significant complexities.