This tutorial models the cell voltage, as well as the bromine and zinc production- consumption, during a charge-discharge cycle. The model is mainly based on the experimental work and results described in Ref. 1, with some additional model parameters taken from Ref. . A zinc-bromine battery is a rechargeable battery system that uses the reaction between zinc metal and bromine to produce electric current, with an electrolyte composed of an aqueous solution of zinc bromide. Zinc has long been used as the negative electrode of primary cells. It is a widely. . Zinc–bromine rechargeable batteries (ZBRBs) are one of the most powerful candidates for next-generation energy storage due to their potentially lower material cost, deep discharge capability, non-flammable electrolytes, relatively long lifetime and good reversibility. Compared to other flow battery chemistries, the Zn–Br cell potentially features lower cost, higher energy densities, and better energy efficiencies. Thus, the total energy storage capacity of the system is dependent on both the stack size (electrode area). . The zinc bromine ($text {ZnBr}$) flow battery stands out due to its inherent scalability and simple, abundant chemistry, making it well-suited for stationary, grid-scale applications. Flow batteries operate differently from conventional batteries, which store energy within the solid electrode. .
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