Solid state electrolyte for an electrode layer of a solid state battery
A solid-state electrolyte (for an electrode layer of a solid-state battery has a core made of a core material and a shell layer surrounding the core and made of a shell material, wherein the core material has a crystalline structure, and the shell material has an amorphous structure, and wherein the core material and the shell material have the same chemical composition.
1 . A solid-state electrolyte for an electrode layer of a solid-state battery, comprising:
a core made of a core material, and
a shell layer surrounding the core and made of a shell material,
wherein the core material and the shell material have the same chemical composition, and
wherein the core material has a crystalline structure, and a surface of the core material is modified by amorphization to form the shell layer, such that the shell material has an amorphous structure.
2 . The solid-state electrolyte according to claim 1 , wherein the core material and the shell material have an electrical conductivity greater than 10 −13 S/cm.
3 . The solid-state electrolyte according to claim 1 , wherein the shell layer has a layer thickness between 100 nm and 1000 nm.
4 . The solid-state electrolyte according to claim 1 , wherein the shell layer has a fracture toughness greater than 1 MPam 1/2 .
5 . The solid-state electrolyte according to claim 1 , wherein the core material and the shell material are made of a sulfide electrolyte or an oxide electrolyte.
6 . An electrode layer of a solid-state battery, having an electrode material and a solid-state electrolyte according to claim 1 .
7 . A solid-state battery, having an electrode layer according to claim 6 .