Nanotubes Power Paper-Thin Battery...

Collaboration among three separate groups of students at Rensselaer Polytechnic Institute has come up with the idea of a paper-thin battery. Made mostly of cellulose -- the main fiber in paper -- embedded with carbon nanotubes and an electrolyte, the devices actually can be used as a battery, a supercapacitor or a combination of the two, depending on how it's assembled.