French startup Nawa Technologies has developed a new type of electric battery technology called ultracapacitors. The principle of operation is based on the separation of atoms into protons and electrons in space from carbon nanotubes composed of graphene and carbon. However, the detailed design and characteristics of the battery are classified - a trade secret.
In the description of the ultracapacitor, it is indicated that the separation of particles does not occur due to a chemical reaction, therefore, deformation and wear of structural elements are minimized. And the speed of charging and discharging has increased thousands of times in comparison with a lithium-ion battery, you can literally charge the battery in a matter of seconds and will not withstand millions of such cycles. Alas, because of this, its power density is four times lower than its lithium counterparts and the entire system is not stable - 10-20% of the accumulated charge can be "lost" per day.
An ultracapacitor will not be a universal solution, but it could fill the niche of fast-use batteries where energy does not need to be stored for long. For example, in regenerative braking systems, lithium-ion batteries are useless due to the inconsistency between process speed and charging rates. And a superfast ultracapacitor is able to "catch" all the energy in order to give it back in a minute or two when performing another maneuver.
Only aluminum and carbon are used in the construction of the ultracapacitor, rare earth elements are not needed here and then it is cheap to manufacture. Moreover, such a battery can be integrated directly into the chassis, made part of a door or wing, without deteriorating performance and the need to allocate a separate compartment. Combining an ultracapacitor with a classic lithium-ion battery creates a convenient and versatile hybrid battery. Their production is scheduled for the second half of 2019.