Lg Energy Solution, Ltd.

Lg Chem, Ltd

Unist, Inc.

Sung-Ju Cho

Doo Kyung Yang

Minchul Jang

Jung-Pil Lee

Sang-Young Lee

Sung-Joong Kang

Eunkyung Park

Hyea-Eun Han

Seung-He Woo

Eun-Bee Kim

Bora Jung

Ho-Suk Shin

Disclosed is a method for manufacturing a solid electrolyte membrane for a solid-state battery and a solid electrolyte membrane obtained thereby. The solid electrolyte membrane for a solid-state battery includes a heat treated porous polymer sheet and a solid electrolyte material, wherein solid electrolyte material and the porous polymer sheet form a composite in such a manner that the pores of the porous polymer sheet is filled with the solid electrolyte material. In this manner, it is possible to provide a solid electrolyte membrane for a solid-state battery which has high mechanical strength and high ion conductivity.

Solid electrolyte membrane including solid electrolyte material filled into heat treated porous polymer sheet, method for manufacturing same and solid-state battery including same

A solid electrolyte membrane and method of preparing, including a plurality of polymer filaments arranged crossed as a 3-dimensional structure in the form of a net of nonwoven fabric-like shape, and a plurality of inorganic solid electrolytes inserted and uniformly distributed in the structure. By this structural feature, a large amount of solid electrolyte particles are uniformly distributed and filled in the electrolyte membrane, contact between the particles is good, and ionic conduction paths are sufficiently provided. Additionally, the durability of the solid electrolyte membrane is improved by the 3-dimensional structure, and the flexibility and strength increase. The nonwoven fabric composite solid electrolyte membrane has an effect in preventing inorganic solid electrolyte particle from being disconnected therefrom.

Method for manufacturing solid electrolyte membrane for all solid type battery and solid electrolyte membrane manufactured by the method

An electrode for a solid state battery is provided. The electrode active material layer of the electrode shows improved mechanical properties, such as elasticity or rigidity, of the electrode layer through the crosslinking of a binder resin. Thus, it is possible to inhibit or reduce the effect of swelling and/or shrinking of the electrode active material during charging/discharging. Therefore, the interfacial adhesion between the electrode active material layer and an electrolyte layer and the interfacial adhesion between the electrode active material layer and a current collector are maintained to a high level to provide a solid state battery having excellent cycle characteristics.

Electrode for solid state battery and method for manufacturing the same

An electrode assembly for a solid state battery includes a positive electrode, a negative electrode and a solid electrolyte layer interposed between the positive electrode and the negative electrode. In addition, the binder disposed at the interface between the negative electrode and the solid electrolyte layer, the interface between the positive electrode and the solid electrolyte layer and/or at a predetermined depth from the interface is crosslinked to form a three-dimensional network. In other words, in the electrode assembly, the binder contained in the negative electrode and the solid electrolyte layer and/or the binder contained in the positive electrode and the solid electrolyte layer is crosslinked to improve the interfacial binding force between the negative electrode and the solid electrolyte layer and/or between the positive electrode and the solid electrolyte layer, and thus ion conductivity is maintained to a significantly high level.

Electrode assembly for solid state battery and method for manufacturing the same

An electrode for an all solid type battery is designed such that fibrous carbon materials serving as a conductor are densely arranged crossed into a 3-dimensional structure in the form of a mesh of a nonwoven fabric-like shape, and an inorganic solid electrolyte and electrode active material particles are impregnated and uniformly dispersed in the structure. By this structural feature, the electrode for an all solid type battery has very good electron conductivity and ionic conductivity.

Electrode for all solid type battery and method for manufacturing the same

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Daejeon, South Korea

Sung-Ju Cho