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Chinese researchers develop calcium-based battery that lasts 700 cycles | Stable in the air at room temperature, the calcium-oxygen battery can be transformed into flexible fibers for next-gen wearables.

A calcium-oxygen battery, with calcium 2,500 times more abundant than lithium, could rival energy density, offering a viable alternative.

The researchers also claim to have integrated their calcium-oxygen device into fibers, producing a flexible textile battery suitable for smartphone usage. This milestone marks a significant advancement in the field, signaling the potential for more durable and efficient energy storage solutions. They claim their invention can help make "calcium chemistry into a promising, sustainable energy-storage technology," according to the team's study.

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