"ENERGY: Paper battery is rechargable"

Rensselaer Polytechnic Institute researchers said they have developed a paper-thin battery by immersing a carpet of vertical nanotubes in an ionic liquid electrolyte. The result is a cellulose paper that stores electrical energy. The RPI team produced a supercapacitor by placing a second nanotube electrode on the other side of the paper. They then added a lithium electrode atop the paper, creating what they claim is a paper-thin rechargable battery.
Text: http://www.eetimes.com/showArticle.jhtml?articleID=201800045