Abstract: Disclosed is a solid electrolyte formed by coating an oxide-based lithium ion conductor on a sulfide-based compound. When an all-solid state battery is manufactured using the solid electrolyte of the present invention, interface resistance between the solid electrolyte and electrode materials may be reduced, and possibility of damage of a coated layer on a process of manufacturing the electrode such as pressing may be reduced, thereby improving output and life time of the battery. Further, storage and use may become easy because the solid electrolyte may be protected from moisture and oxygen in the air, thereby improving manufacturing efficiency of the battery.

Abstract: Provided is an all-solid-state battery containing a nano-solid electrolyte which has excellent stability and enhanced battery performance and can be manufactured without changing an existing process. Due to substantially improved battery performance, as well as having excellent safety, the all-solid-state battery containing a nano-solid electrolyte may be widely used and further contribute to industrial development such as electric vehicles in which medium and large lithium ion rechargeable batteries are used.

Abstract: Disclosed is a positive electrode composite in an all-solid battery. In particular, contents of the electrolyte, the positive electrode material, and the conductive material are non-linearly changed from the electrolyte layer toward the metal current collector. Accordingly, as being closer to the electrolyte layer, ion conductivity is increased, and as being closer to the metal current collector, electron conductivity is increased, such that the electrochemical reactions may be actively performed in the entire internal portion of the positive electrode composite.

Abstract: Disclsoed are a bipolar electrode, a bipolar all-solid battery manufactured by using the same, and a manufacturing method thereof. The bipolar electrode includes: a solid electrolyte; an anode slurry and a cathode slurry, each of which is provided on a first surface and a second surface of the solid electrolyte; spacers provided in the anode slurry and the cathode slurry; and a metal substrate provided in the anode slurry and the cathode slurry. Accordingly, an output and an energy density may be improved by cell integration through minimization of thickness of the cathode, the anode, and the electrolyte of the all-solid battery. Further, when the bipolar all-solid battery is manufactured using high voltage stability characteristic of the solid electrolyte, difference in an elongation rate or a compression rate among the elements may be reduced to secure or improve process stability and to minimize a cell defective rate.