New light-element crystal framework enables safer all-solid-state batteries

Researchers proposed a new light-element crystal framework for all-solid-state lithium batteries. Widely studied oxide solid electrolytes contain heavy elements such as lanthanum and zirconium, giving densities up to 5.12 g/cm3 that limit gravimetric energy density.

• The framework uses light elements instead of lanthanum and zirconium
• Common oxide solid electrolytes reach densities of 5.12 g/cm3
• Solid-state batteries promise better safety and fast charging