Funding for zinc-based batteries

27 September 2023 News

The US Department of Energy has approved a loan of almost $400 million to an energy startup, which will allow it to scale up its production of its zinc-based batteries as an alternative to lithium chemistry. The project, dubbed AMAZE (American Made Zinc Energy), will see Eos Energy’s zinc-bromine battery energy storage system (BESS) provide more sustainable options for the storage of generated renewable energy.

Lithium-based batteries are proving to be a headache for developed countries as the mineral is mainly abundant in developing countries, providing logistical problems in transporting it to manufacturing facilities. However, battery storage is a necessity to store power generated by wind and solar, which is intermittent.

Unlike batteries based on lithium-ion and lithium iron phosphate chemistries, Eos Energy’s alternative battery uses a zinc-based cathode alongside a water-based electrolyte. This increases the battery’s stability and makes it difficult for the battery to support combustion, making it safer to use.

The company’s new iteration of zinc-bromine battery, the Eos Z3, is more energy dense and cost-efficient to produce than its first offering. The Z3 boasts a lifespan of more than 16 years while supporting a discharge depth of 100%.

With the funding by the US Department of Energy, the company will be on target to be able to manufacture 8 GWh of energy storage annually by 2026.

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