Battery technology race: dry cathode, sodium-ion, solid-state
Key Questions
What breakthrough has Tesla achieved with its 4680 battery cells?
Tesla has cracked dry cathode production for 4680 cells by using a spider web binder that eliminates toxic solvents.
Why is sodium-ion technology considered a 2026 breakthrough?
MIT Technology Review highlights sodium-ion batteries from CATL and BYD for their 160-175 Wh/kg density, $70/kWh cost, and strong cold-weather performance at scale.
What progress has Ganfeng Lithium made on solid-state batteries?
Ganfeng has begun pilot production of a 500 Wh/kg solid-state cell in 10-amp-hour format, roughly double the energy density of current leading EV packs.
Tesla cracks dry cathode for 4680 batteries (spider web binder, toxic solvent elimination). MIT Technology Review recognizes sodium-ion as 2026 breakthrough (CATL/BYD scaling, 160-175 Wh/kg, $70/kWh, cold-weather performance). Ganfeng Lithium begins pilot production of 500 Wh/kg solid-state cell (10-amp-hour, double today's best, but unverified). These developments reshape EV battery competition and cost.