As a storage solution for renewable energy, scientists see great potential in what are known as redox flow batteries, which hold energy in large tanks rather than compact electrode materials.
A new design from Sweden’s Linköping University is a decidedly green version of this technology, swapping out scarce metals and synthetic polymers for all-natural materials.
The reason redox flow batteries are such a promising alternative to lithium-ion batteries when it comes to the intermittent nature of renewable energy is because they can store vast amounts of energy at relatively low cost. While lithium-ion batteries store energy in their electrodes and the capacity is therefore limited by the size of the device, redox flow batteries can store energy in liquid electrolytes housed in huge external tanks for months at a time - Link
The reason redox flow batteries are such a promising alternative to lithium-ion batteries when it comes to the intermittent nature of renewable energy is because they can store vast amounts of energy at relatively low cost. While lithium-ion batteries store energy in their electrodes and the capacity is therefore limited by the size of the device, redox flow batteries can store energy in liquid electrolytes housed in huge external tanks for months at a time - Link
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