Super capacitor due to charge and discharge speed, high power density and other factors become a popular energy storage system research. At present, super capacitors are made of carbon-based materials with large surface area, such as carbon nanotubes, graphene and activated carbon. Today, scientists have developed the first carbon-free super capacitor, while the performance is also more than carbon-based materials. This carbon-free capacitor material optimized, the storage potential may be the current carbon-based super capacitor 3 times.
Carbon-free supercapacitor is a metal-organic frameworks (MOFs) Ni3 (HITP) 2 that replaces the previous carbonaceous material. MOFs have a porous structure like sponges that have a much larger surface area than carbon-based materials, and large surface areas are important for supercapacitor performance. Because the capacitance and charge-discharge rates of the supercapacitor are proportional to the surface area and the conductivity, the material with a large specific surface area is generally used in the supercapacitor as much as possible. However, MOFs have a large flaw, and they do not require superconductivity required for electron conductivity.