‘Air’ batteries can power phones and electric cars for longer
Climate Change Green Energy Electric vehicles

‘Air’ batteries can power phones and electric cars for longer

Dr Ryoichi Tatara
Dr Ryoichi Tatara

In 10 seconds? Electric cars need lighter and faster-charging batteries to increase their range, while green energy requires reliable storage to feed the grid. Scientists have found new ways to meet the demand... and have come up with a no-battery phone in the process.

A battery-free phone? Yes, although the prototype (built back in 2017) resembles a green circuit board and no display. The tech can’t power a modern smartphone yet but to prove the concept, researchers built a rudimentary device, that is partly powered by vibrations from the voices of the caller and the phone speaker.

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