The holy grail is here. Toyota's prototype sulfide-based solid-state cell hits 400 Wh/kg — double today's NMC — and charges 10-80% in 12 minutes without lithium dendrite risk.
No liquid electrolyte = no fire risk, higher density, wider temperature window (-30 to 60°C). Samsung SDI's pilot line in Ulsan aims for 10 GWh by 2027.
Timeline: Premium cars 2027, mass market 2029-2030. Meanwhile semi-solid (150-200 Wh/kg) bridges the gap.
SYLVIE PIPKIN