Hanyang University pins minimum LNO coating at 2.5 nm for sulfide solid-state battery cathodes

Solid-state EV battery cathodes need at least 2.5 nanometer protective coatings

Researchers identified 2.5 nanometers as the minimum coating thickness that suppresses side reactions in sulfide solid-state batteries.

Hanyang University pins minimum LNO coating at 2.5 nm for sulfide solid-state battery cathodes

Researchers at Hanyang University have identified 2.5 nanometers as the minimum coating thickness required to effectively protect cathode materials in sulfide-based all-solid-state batteries—giving the field a quantitative lower bound it has been missing. The study focused on lithium niobium oxide (LNO) coatings applied to NCM811 cathode powders via rotary powder atomic layer deposition. Sulfide-based solid electrolytes are chemically reactive a…