Researchers at LLNL are pursuing strategies to improve the capacitive performance of graphene based materials.

Development of novel technologies for electric energy storage is critical for the widespread adoption of emission-free energy sources, such as solar and wind, for electricity generation. Supercapacitors offer a promising technology due to their intrinsic high power densities that enable fast charging and discharging. Unlike conventional batteries, supercapacitors store energy via the formation of an electric double layer at the interface with the electrode.

Researchers are interested in employing graphene-based materials for supercapacitor electrodes, as they feature high surface area, good electrical conductivity, and chemical inertness. However, for practical applications, energy storage performance of these materials requires further improvements, as their interfacial capacitance is often limited by the low density of electronic states for charge storage.

To address these limitations, we are exploring the following strategies:

Learn more about supercapacitors