Stretchable and Flexible Battery

Hi all,
I would talk to you about a sketchable and flexible battery developed by some universities.  It’s the first sketchable battery but not the first flexible.
The first one is a battery created by  a research team in South Korea (the picture below)

Flexible batteries are made up of polymer gel electrolytes South Korea Unveiled World’s First Flexible Li Ion Battery
The researchers at Northwestern University and the University of Illinois created the first sketchable battery with many cells of Li-ion wiring by zigzag wire.

The use of this battery could power the wearable devices. The skinnable battery can be wearable like a patch. It’s already existed for transdermal drug delivery with a flexible battery.
I find a video where we can see the sketchable capacity of the battery:


http://bit.ly/2IYDbtG

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