Flow batteries have a typical duration of up to 12 hours, significantly longer than the 4 hours typically achieved by Lithium-Ion systems.
The long-duration storage of flow batteries means power from renewables can be stored and then distributed when needed to potentially support a future of 100% green energy.
Within lithium-ion batteries, the cell size restricts the charge the battery can hold, whereas in a flow battery, you can engineer larger storage tanks enabling the use more electrolytes to meet the energy requirement. This flexibility enables a de-coupling of power and energy, which helps make robust battery systems.
Flow batteries can be constructed from low-cost and readily available materials, such as thermoplastics and carbon-based materials. These materials can all be recycled, with the electrolytes being recovered and reused, lowering their impact on the environment and offering a much cleaner alternative to their counterparts with lithium-ion batteries which are much harder to recycle.