Supercapacitors are fast chargeable and can be used in all-electric buses, electric vehicles, and even wearable devices. Research on related materials continues. The Leibniz Institute for New Materials , INM) announces the release of a new supercapacitor material that claims to last longer without charging itself.
Traditional capacitors using insulating material separated from each other's plate structure, most of the supercapacitors use ionic liquid electrolyte materials in order to operate at higher voltages. The Leibniz Institute for New Materials used a blend of potassium ferricyanide and a liquid medium with energy densities of 28.3 watts per kilogram on a weight basis and 11.4 watts per liter on a volume basis - hour.
At present, the upper limit of the energy density of supercapacitors is about 30 watts-hour. The results of the Leibniz Research Institute of New Materials team have been fairly close to the upper limit and higher than the supercapacitors of liquid sodium sulphate. The research team also said the material can be stable after 10,000 cycles of charging and discharging, believing it will have a place in the future energy storage market.
The team said that potassium ferricyanide redox materials to provide higher energy density, and higher power output, the other key is the use of ion-selective ion-exchange membrane, to prevent current leakage and reduce the automatic discharge lead to power loss Phenomenon, which can remain in the charge state longer, but not easy to automatically discharge. The research team believes that when using supercapacitors, they always hope to maintain the state of charge as long as possible, and do not want to automatically discharge electricity to cause loss of power.
However, there are potential hurdles to commercialization due to potential safety concerns due to the use of cyanide. Although the release of the team's results in the future may not be able to become a commercial product, but also shows that the research of supercapacitors is in the ascendant, may be effective at any time a better breakthrough of new materials appear.
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