[solistice]

I have the article printed out somewhere, the energy density is in there, about 10 times that of conventional activated carbon supercapacitors and 3 times that of a comparable thin film lithium polymer battery off the top of my head, but I could be wrong. You can find the original paper at the AAAS (American Association for Advancement of Science) website, but its behind a registration wall, and they do mad data mining, so registering might take a while. Also, I have to remind you that this is an article on io9, not in the Scientific American. There are several other articles about this which likely came prior to io9 picking up on the story, and im pretty sure they provide some additional numbers which you so or so will find in the original paper on the subject. Here's the Kady paper that is referred to by the way. http://www.sciencemag.org/content/335/6074/1326.abstract