That looks interesting, but -- unsurprisingly -- the article guides people into putting the cart before the horse through careful presentation of the facts. While it sounds very interesting and is definitely something to keep an eye on here are some key points:
- no patents have been connected with the work
- only one break through: a mysterious material
- only in a lab, only a single cell
- a "50% range increase" seems to imply a 50% gravimetric increase*
- no mention of performance (e.g., degradation, cycles, etc.)
- no mention of cost (presumably because it is so far away from being anything no one has any idea)
- specific mention of "hundreds of hurdles" remaining (no duh, only a single cell in a lab demonstrated?)
In short, this is cool and all, and hopefully it will make it from the lab into production, whether for EVs, laptops, phones or whatever. But it is also
far too early to have any significance. Toyota also has well funded research into solid state, and if I recall correctly even have notable patents that have arisen from it. My point being, QuantumScope is doing an advertising run for an IPO, but they don't appear to be any closer than anyone else to achieving solid state batteries that are useful for EVs.
* if Tesla has any significant gravimetric improvement to mention on battery day this will no longer look so good. Kinda like Lucid claiming fastest production car.