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Could aluminum be the key to affordable seasonal energy storage?

Swiss researchers believe it could be the key to affordable seasonal storage of renewable energy, clearing a path for the decarbonization of the energy grid Aluminum has an energy density more than 50 times higher than lithium ion, if you treat it as an energy storage medium in a redox cycle battery.

Can aluminium redox cycles be used for energy storage?

Aluminium redox cycles are promising candidates for seasonal energy storage. Energy that is stored chemically in Al may reach 23.5 MWh/m 3. Power-to-Al can be used for storing solar or other renewable energy in aluminium. Hydrogen and heat can be produced at low temperatures from aluminium and water.

How much energy can be stored in aluminium?

Energy that is stored chemically in Al may reach 23.5 MWh/m 3. Power-to-Al can be used for storing solar or other renewable energy in aluminium. Hydrogen and heat can be produced at low temperatures from aluminium and water. ≈500 kg Al are needed for a 100% solar PV supplied dwelling in Central Europe.

When will aluminium be used for energy storage?

Although it is possible that first systems for seasonal energy storage with aluminium may run as early as 2022, a large scale application is more likely from the year 2030 onward.

Can aluminium be used for low and zero energy buildings?

Dudita M, Farchado M, Englert A, Carbonell D, Haller M. Heat and power storage using aluminium for low and zero energy buildings. In: Proceedings CLIMA 2019 -13th REHVA World Congress, Bucharest, Romania: 2019, p. 1–6, accepted for publication. US DOE. Fuel Cell Technologies Market Report 2015. 2016.

Could aluminum be the key to a redox cycle?

Aluminum, used in a redox cycle, has a massive energy density. Swiss researchers believe it could be the key to affordable seasonal storage of renewable energy, clearing a path for the decarbonization of the energy grid