Samsung’s oxide solid-state battery technology boasts an energy density of 500 Wh/kg, nearly double the 270 Wh/kg density of mainstream EV batteries.
This increased density could potentially double the driving range of current electric vehicles.
https://interestingengineering.com/energy/samsungs-ev-battery-600-mile-charge-in-9-mins
Here's a link from inside that link:
https://interestingengineering.com/innovation/china-low-cost-solid-state-battery-innovation