MoS/Mayenite Electride Hybrid as a Cathode Host for Suppressing Polysulfide Shuttling and Promoting Kinetics in Lithium-Sulfur Batteries.

The commercial viability of emerging lithium-sulfur batteries (LSBs) remains greatly hindered by short lifespans caused by electrically insulating sulfur, lithium polysulfides (LiS; 1 ≤ ≤ 8) shuttling, and sluggish sulfur reduction reactions (SRRs). This work proposes the utilization of a hybrid composed of sulfiphilic MoS and mayenite electride (C12A7:e) as a cathode host to address these challenges. Specifically, abundant cement-based C12A7:e is the most stable inorganic electride, possessing the ultimate electrical conductivity and low work function.