Hyundai Motor Company

Kia Motors Corporation

Industry-University Cooperation Foundation Hanyang University

Lak Young Choi

Hong Seok Min

Yong Sub Yoon

Dong Wook Shin

Kyung Su Kim

Sung Woo Noh

Oh Min Kwon

Provided is an electrode active material slurry including a clustered complex and a slurry, wherein the clustered complex includes an electrode active material, a solid electrolyte, a conductive material, and a first binder, and the slurry includes a solvent and a second binder. The electrode active material slurry may include the clustered complex including the first binder and the slurry including the second binder so as to decrease a surface area of the overall complex, such that adhesion property with the current collector may be sufficiently secured even by using a small amount of binder, and performance of the all-solid secondary battery may be further improved.

Electrode active material slurry, preparation method thereof, and all-solid secondary battery comprising the same

Disclosed is a method of manufacturing an all-solid state battery. The method includes coating a first slurry or composition having on a substrate to form a first electrolyte layer a predetermined thickness, coating a second slurry or composition on the first electrolyte layer to form a second electrolyte layer having a predetermined thickness, laminating an electrode layer on the second electrolyte layer, bonding the electrode layer to the second electrolyte layer through pressing, and removing the substrate from the first electrolyte layer. The first slurry or composition of the first electrolyte layer has content of a binder less than that of the second slurry or composition of the second electrolyte layer, and thus, the substrate may be easily removed from the first electrolyte layer.

Electrolyte layer for all-solid state battery and method of manufacturing all-solid state battery using the same

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Seoul, South Korea

Lak Young Choi