Chinese Iron-Flow Battery Achieves 6000 Cycles Without Capacity Loss
Researchers have developed an iron-flow battery that lasts over 6000 cycles without capacity degradation, significantly reducing energy storage costs. This advancement is crucial for large-scale renewable energy storage, as the cost of iron is 80 times lower than lithium.
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A new iron-flow battery developed by researchers at the Institute of Metal Research, Chinese Academy of Sciences, can withstand 6000 complete charge-discharge cycles without capacity loss. The battery utilizes iron, which is significantly cheaper than lithium, making it a promising option for large-scale energy storage.
The prototype achieves a Coulomb efficiency of 99.4% and maintains an energy efficiency of 78.5% under high loads. The levelized cost of storage (LCOS) is projected at approximately $0.16 per kilowatt-hour, up to 40% lower than comparable lithium-ion systems.
However, challenges remain in optimizing membranes and system integration for mass production. This technology may play a key role in providing reliable long-term energy storage for renewable sources.
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