Lithium is a nasty, dangerous metal. It will always be anathema to safe battery application in Li-Ion tech.
That was Paris. If you have ever owned a French car you know electrics are not their forte. Solid state lithium is coming out now, will be in cars within four years. As fire is no longer possible the charge times are amazing, 80.percent charge in 15 minutes and double the energy density. That said, there are a dozen other chemistries emerging better than current cells.