NANO-ENGINEERED COATINGS FOR ANODE ACTIVE MATERIALS, CATHODE ACTIVE MATERIALS, AND SOLID-STATE ELECTROLYTES AND METHODS OF MAKING BATTERIES CONTAINING NANO-ENGINEERED COATINGS

摘要

The present disclosure relates to nano-engineered coatings for cathode active materials, anode active materials, and solid state electrolyte materials, and processes for applying the disclosed coatings to reduce corrosion of batteries and improve cycle life. . Also disclosed is a solid state battery comprising a solid electrolyte layer having solid electrolyte particles coated by a protective coating having a thickness of 100 nm or less. The protective coating is obtained by atomic layer deposition (ALD) or molecular layer deposition (MLD). Additionally, a solid electrolyte layer for a solid state battery is disclosed comprising a porous scaffold coated by a first solid electrolyte coating. The solid electrolyte coating has a thickness of no more than 60 μm and a weight loading of at least 20 wt.% (or preferably at least 40 wt.% or at least 50 wt.%). Additionally, a cathode composite layer for a solid state battery is disclosed.