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Samsung delivers 600-mile solid-state EV battery as it teases 9-minute charging and 20-year lifespan tech
(www.notebookcheck.net)
This is a most excellent place for technology news and articles.
Unfortunately the source does not seem to indicate what Samsung is using.
https://www.thelec.kr/news/articleView.html?idxno=29222
It does say that LG will be producing a sulfide based electrolyte.
LOL that's why I wrote my question, smartie.