Iron flow batteries can be largely reused or recycled at the end of their life due to their use of common components and earth-abundant materials, such as iron, salt, and water. The electrolyte and electrode assemblies in flow batteries are physically separate, making them easier to disassemble for recycling. While specific details on the number of times they can be recycled are not widely discussed, their recyclable nature and non-toxic materials make them an environmentally friendly option compared to lithium-ion batteries.
Iron flow batteries themselves can have a lifespan of more than 20 years, and in some cases, up to 25 years, with the ability to store energy for up to 12 hours. This long lifespan reduces the need for frequent replacement and recycling, further contributing to their sustainability.
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