The smarties at Rensselaer have outdone themselves. They've created paper that stores electricity. When they attached a nanotube electrode to their special nanotube cellulose paper, then added a lithium electrode layer, they created a super-thin electrode sandwich. The little paper battery they created is rechargable, stackable for higher voltage, and expandable for more current. The battery is only a few square inches right now but they're working on making it bigger.
Here's the really cool part, you can bend it, twist it, or cut it into any shape you want. Nanotube technology is being used in Solar Paint, and much like solar paint, researchers plan on making paper batteries conventionally printable.
