Solid State Battery

Abstract: The present invention relates to a solid-state battery. The solid-state battery comprises: a positive electrode; a negative electrode; and an electrolyte layer interposed between the positive electrode and the negative electrode, the electrolyte layer comprising: a polymer including a polyethylene oxide (PEO)-based copolymer having cross-linkable functional groups, of which at least a portion form crosslinks; a ceramic compound; and a polar compound, wherein the polar compound is dispersed in or linked onto the polymer, and the positive electrode comprises: a positive electrode active material; and a binder including a PEO-based copolymer having cross-linkable functional groups.

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