Solid electrolyte membrane, method for manufacturing the same, and all-solid-state battery comprising the same

An all-solid-state battery comprising a positive electrode, a negative electrode and a solid electrolyte membrane interposed between them,

• wherein the solid electrolyte membrane comprises:
• a first solid electrolyte layer;
• and
• a second solid electrolyte layer on one side of the first solid electrolyte layer,
• wherein the first solid electrolyte layer comprises a first solid electrolyte and a particulate binder, wherein a weight of the particulate binder exceeds 0% by weight and is 2% by weight or less based on a total weight of the first solid electrolyte layer,
• wherein the second solid electrolyte layer comprises a second solid electrolyte and a fibrous binder, wherein a weight of the fibrous binder is 0.01 to 5% by weight based on a total weight of the second solid electrolyte layer.

An electric vehicle comprising a battery module comprising an all-solid-state battery,

• wherein the all-solid-state battery comprises a positive electrode, a negative electrode and a solid electrolyte membrane interposed between them,
• wherein the solid electrolyte membrane comprises:
• a first solid electrolyte layer;
• and
• a second solid electrolyte layer on one side of the first solid electrolyte layer,
• wherein the first solid electrolyte layer comprises a first solid electrolyte and a particulate binder, wherein a weight of the particulate binder exceeds 0% by weight and is 2% by weight or less based on a total weight of the first solid electrolyte layer,
• wherein the second solid electrolyte layer comprises a second solid electrolyte and a fibrous binder, wherein a weight of the fibrous binder is 0.01 to 5% by weight based on a total weight of the second solid electrolyte layer, and
• wherein the electric vehicle is selected from an electric vehicle (EV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), an electric motorcycle, an electric bike (E-bike), an electric scooter (E-scooter) or an electric golf cart.