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Putting power on paper: researchers create thin battery


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US researchers said Monday they have invented a lightweight paper battery that could serve as an enhanced power storage device for the next generation of consumer electronic devices.

The battery produces electricity in the same way as the conventional lithium-ion batteries that power so many of today's gadgets, but all the components have been incorporated into a lightweight, flexible sheet of paper.

"You can stack one sheet on top of another to boost the power output," said Robert Linhardt, a biology and chemistry professor at Rensselaer Polytechnic Institute in Troy, New York, and a project team member.

"We've already experimented with 10 sheets, but there's nothing to stop you using 500, and they can be rolled, bent or folded into any shape or space you like. There are endless design possibilities."

The materials used in the prototype are inexpensive but the team is still working on ways to mass produce the paper battery cheaply. They hope that eventually they can print the paper using a roll-to-roll system similar to how newspapers are printed.

http://uk.news.yahoo...-e0bba4a_2.html
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