We all know how useful plastic can be. But did you ever consider it's possibilities as a battery? Well, that's exactly what scientists at Imperial College London's Department of Aeronautics did. And it seems they have succeeded. Technically, the plastic is more of a supercapacitor than a battery, but its uses are generating interest. Imagine an iPod case that could serve as its own power source - or a mobile phone, computer screen etc. Without the need for an internal battery, these items could be constructed to a much smaller size than at present. The superconductor has a much longer lifespan than chemical bateries, and can charge and discharge far more quickly. There's even talk of making clothes that can charge up while you move, and discharge heat when the weather's a bit nippy.