Smoltek

This newly granted patent is the first one in a new patent family called Multilayer Cap and details an invention for a layered energy storage device, e.g. a capacitor, built using a metal-insulator-metal (MIM) configuration.

"Capacitance density is one of the most important KPIs of our CNF-MIM capacitor technology. In this new patent, we propose a technique that doubles or triples the capacitance density through an innovating multi-layer structure.", says Farzan Ghavanini, CTO at Smotek. 

The invention relates to metal-insulator-metal (MIM) electrostatic and/or electrochemical energy storage devices, including capacitors and batteries. It introduces a method for creating a carbon nanofiber (CNF) based, multilayer MIM structure, where electrodes and dielectrics are sequentially layered. This innovative approach of stacking conductor-insulator layers is developed to increase the capacitance density and hence is considered important for Smoltek business and technology.

The patent application actually includes two independent claims: A device claim, which outlines the stacked multilayer capacitor structure having alternating conductor-insulator layers. And a method claim which details the fabrication process of such device using conformal coating on the CNFs.