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Flexible battery

Stretchable lithium-ion battery : Can Stretch, Twist and Bend -- And Return to Normal Shape ::No longer needing to be connected by a cord to an electrical outlet, the stretchable electronic devices now could be used anywhere, including i...nside the human body. The implantable electronics could monitor anything from brain waves to heart activity, succeeding where flat, rigid batteries would fail.522614_517437961632196_1356733607_n

Northwestern University's Yonggang Huang and the University of Illinois' John A. Rogers are the first to demonstrate a stretchable lithium-ion battery -- a flexible device capable of powering their innovative stretchable electronics.

Huang and Rogers have demonstrated a battery that continues to work -- powering a commercial light-emitting diode (LED) -- even when stretched, folded, twisted and mounted on a human elbow. The battery can work for eight to nine hours before it needs recharging, which can be done wirelessly.

The power and voltage of the stretchable battery are similar to a conventional lithium-ion battery of the same size, but the flexible battery can stretch up to 300 percent of its original size and still function.


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