Composite anode layer, manufacturing method thereof, anode, and all-solid state battery

Abstract

Composite anode layers, anodes, all-solid state batteries, and their manufacturing methods are disclosed. In an embodiment, a composite anode layer includes an anode active material and a sulfide-based solid electrolyte. The anode active material includes a core-shell structured anode active material including a core that includes silicon and a shell disposed on a surface of the core. The shell includes a lithium-containing compound, and the lithium-containing compound comprises at least one of phosphorus and boron. This configuration can improve the structural stability and lithium ion conductivity of an anode active material using a silicon-based anode material.

Dependencies are inferred from the claim text.