Lg Energy Solution, Ltd.

Lg Chem, Ltd

Seung-He Woo

Sung-Joong Kang

Hyea-Eun Han

Ho-Suk Shin

Sung-Ju Cho

Jung-Pil Lee

Hyo-Sik Kim

Ji-Young Kim

Eun-Bee Kim

Ji-Hoon Ryu

Suk-Woo Lee

Hye-Ri Jung

Eun-Kyung Mok

The present disclosure relates to a solid electrolyte membrane for an all-solid-state battery and a battery including the same. The battery may include lithium metal as a negative electrode active material. The solid-electrolyte membrane provides an effect of inhibiting growth of lithium dendrite by ionizing lithium deposited as metal. Therefore, when using lithium metal as a negative electrode in the all-solid-state battery including the solid electrolyte membrane, there is provided an effect of delaying and/or inhibiting growth of lithium dendrite. Thus, it is possible to effectively prevent an electrical short-circuit caused by growth of lithium dendrite.

Solid electrolyte membrane and all-solid-state battery comprising same

An electrode for an all solid-state battery including an electrode current collector, and an electrode active material layer formed on at least one surface of the electrode current collector, wherein the electrode active material layer includes electrode active material particles, a solid electrolyte coated on at least part of surface of the electrode active material particles to connect the electrode active material particles to each other, and a linear structure distributed between the electrode active material particles.

Electrode for all solid-state battery including solid electrolyte

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.

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Daejeon, South Korea

Seung-He Woo