Scientists Roll Out Paper Batteries
We're hoping for fold-able cell phones
By Heather McPherson,  Newser User
Posted Aug 14, 2007 5:50 PM CDT
Unlike current batteries, which contribute heavily to pollution, "These devices are lightweight and flexible and are primarily composed of cellulose paper%u2014an environmentally friendly and biocompatible...   (
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(Newser) – Scientists have come up with a paper-like substance that can act as a power source, Scientific American reports. The thin, flexible substance—composed of cellulose, carbon nanotubes, and liquid salts—can be used as both a battery and a supercapacitor, which can deliver quick bursts of high power. What's more, it can be cut, rolled up, or bent just like paper.

The paper batteries also can withstand temperatures as high as 350 F, without bursting into flames, and might eventually be able to be rolled off of a printing press.  The battery is the product of a team effort by three separate labs at Rensselaer Polytechnic Institute—biopolymers, nanotubes and electronics.