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The UCLA team has revived Thomas Edison's nickel-iron battery for grid-scale energy storage by enhancing its chemistry and electrode architecture at the nanoscale. The modernized system boasts recharge times of seconds and a lifespan exceeding 12,000 full charge/discharge cycles, translating to over 30 years of use.

This battery design emphasizes durability and safety, making it suitable for applications like solar energy storage and backup power for data centers. While it has lower energy density than lithium-ion batteries, its advantages in cycle life and material abundance position it as a viable option for renewable energy storage.