Na4 Li8 P4 O16

Na4Li8P4O16 is a lithium-sodium phosphate ceramic compound belonging to the family of mixed-alkali phosphate materials. This is a research-stage material primarily investigated as a solid electrolyte candidate for all-solid-state battery systems, where its mixed-cation framework offers potential for enhanced ion conductivity compared to single-alkali phosphate ceramics. The material is notable in the solid-state battery community because dual-alkali compositions can modify crystal structure and defect chemistry to improve lithium-ion transport, making it relevant for next-generation energy storage where thermal stability and ionic conductivity are critical.