Producing supercapacitors with energy densities similar to those of traditional batteries is currently a hot topic in energy research as they have great potential for use in electric vehicles. Graphene has been identified as promising supercapacitor material.
In this HOT article Ruoff et al. report for the first time the interfacial capacitance of a single sheet of graphene, and show that the greater charge can be stored on a single side of the graphene sheet than can be stored simultaneously on both sides. This means that an increase in the graphene surface area does not result in a linear increase in energy storage capacity, as was previously thought.
Read this exciting article in full:
Interfacial capacitance of single layer graphene
Meryl D. Stoller, Carl W. Magnuson, Yanwu Zhu, Shanthi Murali, Ji Won Suk, Richard Piner and Rodney S. Ruoff
Energy Environ. Sci., 2011