> Two electrodes made of this material, separated by a thin space or an insulating layer, form a very powerful supercapacitor, the researchers found. The image

> Two electrodes made of this material, separated by a thin space or an insulating layer, form a very powerful supercapacitor, the researchers found. The image of a huge cube is a bit misleading. If you made a huge cube, you'd probably want a sandwich of thin layers separated by thin film, wired in alternating polarity. Not exactly something you could pour in a foundation.