Synthesis of (LiFeMn)SO Antiperovskites with Comprehensive Investigations of (LiFeMn)SO as Cathode in Li-ion Batteries.

A series of solid solutions (LiFeMn)SO with a cubic antiperovskite structure was successfully synthesized. The composition (LiFeMn)SO was intensively studied as a cathode in Li-ion batteries showing a reversible specific capacity of 120 mA h g and almost a 100% Coulombic efficiency after 50 cycles at 0.1C meaning extraction/insertion of 1 Li per formula unit during 10 h.