Super capacitor (Supercapacitors) can fast charging characteristics, can be used in all electric buses and electric cars, and even wearable devices, related Materials research also continues on, Germany's Leibniz Institute of New Materials (Leibniz had Institute for New Materials, INM) released a New super capacitor Materials, that can maintain longer charging status without automatic discharge.
Traditional capacitor using separated by insulating material, alternate with each other panel structure, supercapacitors are mostly using ionic liquid electrolyte materials, in order to operate at a higher voltage. Leibniz institute team used the new material of potassium ferricyanide and liquid medium hybrid material, its energy density to 28.3 watts per kilogram weight calculation - hour (watt - hour), a volume of 11.4 watts per liter - hours.
The upper limit of super capacitor energy density is about 30 watt - hour, leibniz institute of new materials team results is quite close to the ceiling, and higher than the density of its liquid sodium sulfate material of super capacitor. The research team also said that the material can pass 10000 times charging and discharging cycle still maintain stability, think the energy storage market will have a place in the future.
Research team said potassium ferricyanide oxidation raw materials also provide higher energy density, and higher power output, is another important key using ion selective ion exchange membrane, can prevent the leakage current, automatic discharge lead to power loss reduction phenomenon, thus can stay longer in charging state, and less prone to self discharge. Research team think charging state using ultracapacitors have always wanted to hold out for as long as possible, don't want automatic discharge cause power loss.
However, due to using cyanide, have potential safety concerns, will lead to as well as potential obstacles. Although the team's achievements the future may not be able to become a commercial product, but also showed that the super capacitor research is ascendant, subject to effective better new material breakthrough.
