Sticking power

29 June 2020 | Muriel Cozier

New power source is ‘expected to solve many of the obstacles of lithium-based energy storage technologies.’

Researchers in Korea have developed a power source which they hope will lead to the wide spread use of flexible, wearable electronic devices.

While wearable electronics have become smaller and lighter, there has been a growing need for new power sources that can stretch and bend with the body, but are also safe and durable. The new ‘sticker-type’ microsupercapacitor (MSC) power source is said to be flexible and easily re-attached to next generation wearable devices, while also being eco-friendly. The researchers say the new power source is ‘expected to solve many of the obstacles of lithium-based energy storage technologies.’

The MSCs are produced from a 3D network of highly swollen reduced graphene oxide electrodes, impregnated with durable adhesive polymer composites. A prototype of an MSC array was attached to safety goggles and successfully powered a micro-LED. The total capacitance of the array was maintained at approximately 97% of its original value after 200 repetitive attachments, showing good durability.

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