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There are several promising methods to solving the problem of utility-scale energy storage. Previously, storing energy chemically in batteries was not as applicable on the larger scale as it is with small electrical appliances. Grid scale batteries would cost a fortune. The concept of a battery made of zinc-air has been around for decades. In the last few years, technological advancements have put zinc-air batteries on the map. What are the advantages of using this technology enabling us to use zinc-air batteries energy efficient with low costs on utility-scale? Since the energy released and stored with a chemical reaction where zinc is oxidized with oxygen from the air compared to conventional batteries, containing two reactants, the energy density is vastly improved. In theory, a zinc-air battery can store several times the amount of energy other batteries can. Zinc, as well as the other materials used to build these types of batteries, is all relatively low-cost compared to competing battery technologies. Full Article

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