What does paper have to do with electricity?

Sony presented its new invention during the Eco-product fair in Tokyo: a bio-battery that generates energy out of cellulose. The raw material is recycled paper; children were protagonists of the fair, they could experiment the new technology by inserting pieces of paper in water and enzymes solution, ...and the electric reaction happened in front of everyone's stupefaction.


italian link:http://www.greenme.it/tecno/gadget/6535-sony-batterie-carta-enzimi