Tesla’s V3 super chargers charge at 250kW, IIRC VW/Audi are working on a 500kW charging for their (s)HV cars.

The Kia EV6 which is pretty much on the market already supports 350kW charging with 800v DC chargers… they demonstrated 70% charge in only 18min with a production car and a production charger.

So I don’t see why 480kw would be unrealistic especially with a new cathode technology.

Whether this one works or not I don’t know but the 480kW isn’t some limit that can’t be broken because we are already reaching it with existing batteries.