Li2 Fe1 P2 S6

Li₂Fe₁P₂S₆ is an experimental lithium iron phosphosulfide compound belonging to the semiconductor and solid electrolyte material family. This compound is of primary interest in battery research, particularly for all-solid-state lithium-ion battery development, where it functions as a potential electrolyte material offering ionic conductivity while maintaining structural stability. The material represents an emerging class of sulfide-based solid electrolytes that aim to overcome safety and energy density limitations of conventional liquid electrolyte batteries, though it remains largely in the research phase without widespread commercial deployment.