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 available, relatively. Zinc–bromine batteries can be split into two groups: and non-flow batteries. There are no longer any companies commercializing flow batteries, Gelion (Australia) have non-flow. FlowThe zinc–bromine (ZBRFB) is a hybrid flow battery. A solution of is stored in two tanks. When the battery is charged or discharged, the solutions (electrolytes) are pumped through a reactor stack. See EOS Energy website. They are currently the sole commercial supplier of Zn-Br batteries. • • Zinc–bromine batteries share six advantages over lithium-ion storage systems: • 100% depth of discharge capability on a daily basis. • Little capacity degradation, enabling 5000+ cycles Flow and non-flow configuration share the same electrochemistry. At the negative electrode is the electroactive species. It is, with a E° = −0.76 V vs. The negative electrode. Many Zn-Br flow battery tech companies have gone broke. EOS Energy and Gelion are the only two that remain trading, both have non-flow Zn-Br technology. As of November 2021 EOS Energy Enterprises had secured a 300 MWh order from Pine Gate.
