Multi-cell multi-layer high voltage supercapacitor apparatus including graphene electrodes

Abstract

A supercapacitor apparatus within a sealed housing to provide a high-voltage EDLC energy storage unit includes cells stacked on one another, with each cell having a set of supercapacitors that are interconnected within the apparatus in a parallel-series configuration to provide an internally balanced energy storage unit that is capable of stand-off voltages of 10 volts or higher. The energy storage unit does not require balancing resistors or more complicated external balancing circuitry. The electrodes of the supercapacitors are comprised of carbon nanotubes and graphene nanoplatelets for optimal capacitance density. Along with providing higher stand-off voltages without the need for external balancing circuitry and increased volumetric energy density, the inventive energy storage unit provides for storage costs far lower than provided by currently available supercapacitor devices.

Dependencies are inferred from the claim text.