“…[9] Hence,t he exploitation of catalysts to promote the exclusive formation/decomposition of Li 2 O 2 and suppress the formationo fo ther lithium compounds (Li 2 CO 3 ,L iOH, etc.) [23] Notably,i ron sulfides commercially used in lithium primary batteries, with attractive features such as cost-effectiveness, natural abundance,a nd environmental inertness, Cost-effective dual heteroatom-doped 3D carbon nanofoamwrapped FeS nanoparticles (NPs), FeS-C,a ct as efficient bifunctional catalysts for Li-O 2 batteries. [4,14,[20][21][22][23] Transition-metal mono-and disulfides (TMSs) with odd electronic properties, unique structuralc hemistry,a nd rich intercalation chemistry have emerged as the most promising electrocatalysts for proton-exchange membrane fuel cells, water oxidation,z inc-air batteries, and deinsertion/insertion materials for Li-ion battery applications.…”