The guys say that they want to use graphene as an anode. Graphene has good properties and can take lithium quickly, which allows it to be charged quickly. In fact, this is not the best anode material for solid-state batteries. One of their key features is the use of inorganic ion electrolyte based on a certain composition of crystals. It is a material with very high lithium ion conductivity. Most often, as the cathode, they want to use pure lithium or pure sodium. The use of the cathode in the form of pure lithium can increase the energy intensity of the cathode from 160-180 mA*h/kg to 4200 mA*h/kg – actually at 30 (!) times.
On the other hand, taking into account the fact that these components have a very high ionic conductivity, it is possible to use other anodes, in particular sulfur. John Goodenough spoke about it in his work in February last year (John Goodenough - American scientist, expert in physics and materials science, winner of many prestigious awards. Proposed lithium cobalt (LixCoO2) as the cathode in the lithium-ion battery). It turns out that from the point of view of the technological approach stated in this article, the developers are closer to commercialization. That's why they talk about the transition from 600 to 800 kilometers - 30% increase in capacity.
More impressive is the charge for 1 minute. Take Tesla, whose battery consumption is about 100 kV/h, comparable with the statement that the car will drive 30% more - 200 km. Even with a 130 kilowatt-hour capacity charging installation with a maximum available voltage is 380 V, the current will reach 340 amps. This means that the cross-section of the wires will be thick with a thumb - the cross-section will be about 3 cm2. The developers claim that such a battery they can charge in a minute, which means 60 times faster than a Tesla battery. It turns out that the current should go in the amount of 20 000 A at 380 V – a very, very controversial issue. At 20,000 A the power of the charger itself should be 7.8 mW, which is possible only when powered from the power plant!
At the moment, a plausible 'charge rate' of the battery for 1 minute with such energy intensity is possible only with the replacement of the battery.