The main problem for wide distributionelectric vehicles is a small battery capacity that does not allow to make long journeys on a single charge and a long battery charge time. The solution to the main problems of electric vehicles can be found using the technology offered by Toomen New Energy from China, which created power capacitors that can achieve a compromise between supercapacitors and lithium-ion batteries.
For the first time, Toomen New Energy technology waspresented at the events of the Hannover Messe exhibition in Germany in 2018, where she was noticed by the current partner of the company, Belgian startup Kurt.Energy. After testing the Toomen power capacitors, the Belgians were convinced that their technical characteristics were 20 times higher than those from Maxwell.
Toomen capacitors use a designelements for energy storage without using a chemical reaction, by analogy with supercapacitors. The design uses an electrode with "activated carbon" in the manufacture of which graphene is used, and for the second electrode a lithium compound that does not have active lithium is used, as is provided for in lithium-ion batteries.
Notably, Toomen devices are more expensive inproduction than traditional lithium-ion batteries. However, recalculating the unit cost in dollars per kilowatt per charge cycle, Chinese energy sources come out cheaper. In addition, the high power of Toomen capacitors saves fuel in hybrid cars, and their charging is very fast. There is no electrolyte in the Toomen power capacitors, instead of which an unknown filler is used. This eliminates the risk of fire and preserves the environment.
Toomen produces two types of powercapacitors, in one of which high density of stored energy is used, and in the second higher power is realized. So, for Toomen capacitors with an increased energy density, they reach an energy density in the range of 200–260 Wh / kg, and a power density of 300 to 500 W / kg. For elements with high power, the technical characteristics are as follows: energy density 80–100 Wh / kg with a power density of about 1500 W / kg and peak - about 5000 W / kg.
Modern with DuraBlue Supercapacitors fromMaxwell have an energy density of 8–10 Wh / kg, with a power density of 12,000–14,000 W / kg. A modern lithium-ion battery has an energy storage density of 150–250 Wh / kg and a power density of 250–350 W / kg.
Another significant advantage of powerToomen capacitors is their ability to operate in the temperature range from –50 to 45 degrees C without the use of cooling or heating systems, which will provide savings in the creation of power systems and electronic components that do not require special protection against temperature extremes.