Ultra- or supercapacitors (supercaps) combine high specific power and moderate energy density. They are applied, where high power is required over a short period of time. The innovative materials of SGL Group contribute substantially to the performance characteristics of supercaps.

Innovative electrode materials of SGL Group made from activated carbon increase the energy density of supercaps significantly in comparison with currently used materials. The active material surface with a specific porous structure (meso-, micro- or ultramicroporous) is the key determinant for the capacitor’s energy- and power density. The capacitance can be further increased through the presence of special functional surface groups, which allow additional pseudo-capacitive energy storage. High purity (< 100 ppm) and low electrical resistance is a basic requirement for ensuring long cycle lifes.

Current research of SGL Group includes, in addition to conventional coke-based materials, biomaterials (e.g. carbonized seaweed) and nano-composites. The improvement of material properties and the stabilization of quality parameters are critical research priorities.

Largest potentials are assumed within the growing hybrid- and electrical vehicle segment. Currently dominating application segments are for instance wind mills, construction machinery and consumer electronics.

Supercaps for instance support the quick start of engine systems or, if operated in combination, prolong the cycle lives of batteries.

We produce porous carbon materials from sample size to large-scale production lots with customized structures and high specific surfaces. Due to their electrochemical properties, our material is suited for both, organic and aqueous electrolytes.

We are open for new applications, which might benefit from our broad expertise. We are at your service concering all your questions in the area of porous carbon. Please contact us.