Professor Yang Shao-Horn co-authored a paper recently published by Nature Materials regarding supercapacitors that do not rely on carbon. This story was also featured on the MIT Home Page!
"Energy storage devices called supercapacitors have become a hot area of research, in part because they can be charged rapidly and deliver intense bursts of power. However, all supercapacitors currently use components made of carbon, which require high temperatures and harsh chemicals to produce.
"Now researchers at MIT and elsewhere have for the first time developed a supercapacitor that uses no conductive carbon at all, and that could potentially produce more power than existing versions of this technology." - MIT News