UCLA researchers have developed a solid-state supercapacitor structure with non-planar electrodes and ionogels dielectric medium.
Supercapacitors are widely applicable and have been developed commercially, usually for bulk energy storage applications. Supercapacitors are significantly more efficient for rapid charge-discharge cycles, such as those seen in an electric car. A supercapacitor device is typically composed of two metal plates and a liquid electrolyte. Because of the liquid electrolyte, these supercapacitors require tough, rigid packaging and are resistant to miniaturization. By contrast, standard capacitors use a solid electrolyte to minimize internal resistance and maximize charge retention.
UCLA researchers have developed a supercapacitor structure with non-planar electrodes and solid-state electrolytes. One possible electrode structure is an array of conductive quasi-one-dimensional nanostructures formed vertically and orthogonal to a planar metallic surface. The design combines the advantage of high surface area and high conductivity for nanostructured electrodes with the convenience of solid-state electrolyte, enabling miniaturization of supercapacitor devices for on-chip applications.The high surface area and high electrical conductivity allow excellent energy and power density.
|United States Of America||Issued Patent||9,570,244||02/14/2017||2011-469|
supercapacitor; nanostructure; cabon nanotube; ionogel; solid-state; energy storage