The NIO ET7 and ET5 performance sedans that are sizing up Tesla's Model S Plaid won't be the first electric cars with semi-solid state batteries, as a humble taxi fleet just got its first delivery of EVs with such packs. Made by the world's largest lithium producer Ganfeng, the E70 electric cars' battery packs are made with solid electrolyte diaphragm.
https://www.notebookcheck.net/First-electric-cars-with-a-semi-solid-state-battery-by-the-world-s-largest-lithium-producer-launch-in-a-taxi-fleet.595233.0.html
There is no such thing as semi solid state... it is solid or it isn't.
Are electrocars even safe? It is ill-advised to use a laptop on your lap but now you can sit inside one with a thousand batteries under you. Go figure...