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A battery that folds!

Posted: 08 Aug 2012     Print Version  Bookmark and Share

Keywords:flexible batteries  lithium-ion batteries 

Are you excited to carry a foldable iPhone? Korean scientists have developed a super-thin flexible all-solid-state battery that could one day lead to phones and gadgets that can be folded.

We've got flexible displays, printed circuits, memory, LED etc., but not flexible batteries. Until now, batteries were rigid and inflexible letting phones and other devices to remain in a basic rectangle shape.

But, this "breakthrough" opens up the possibility of foldable smartphones and tablets.


A Flexible Battery; courtesy KAIST

"The technological advance of thin and light flexible display has encouraged the development of flexible batteries with a high power density and thermal stability," said researchers from Korea Advanced Institute of Science and Technology.

"Although rechargeable lithium-ion batteries (LIB) have been regarded as a strong candidate for a high-performance flexible energy source, compliant electrodes for bendable LIBs are restricted to only a few materials such as organic materials or nano/micro structured inorganic materials mixed with polymer binders," they added. "The performance of LIBs has not been sufficient either, thereby difficult to apply to flexible consumer electronics including rollable displays."

The advent of a high performance flexible thin film battery will accelerate the development of next-generation fully flexible electronic systems in combination with existing flexible components such as display, memory, and LED, said the KAIST team.


A blue LED emission operated by flexible solid state battery.

The team is currently investigating a laser lift-off technology to facilitate the mass production of flexible LIBs and 3D stacking structures to enhance charge density of batteries.

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