Researchers from Lawrence Livermore (LLNL) developed new supercapacitor electrodes made from modified graphene aerogels. Those electrodes feature high surface area, good electrical conductivity, chemical inertness and long-term cycling stability.

The researchers report that the graphene aerogel can improve the performance of commercial carbon-based (carbon black and binder materials) supercapacitor electrodes by more than 100%. The graphene aerogel electrodes have better density and pore size distribution, and increased conductivity.

Graphene aerogel was first reported in November 2013, by a group of researchers from China's Zhejiang University. The aerogel made at Zhejiang was made from freeze-dried carbon and graphene oxide, and is reportedly the lightest material ever made.