Lg Energy Solution, Ltd.

Lg Electronics Inc.

Dongseok Shin

Doo Kyung Yang

Kihyun Kim

Soohyun Kim

Kwonnam Sohn

Taek Gyoung Kim

Intae Park

Bong Soo Kim

Minsu Kim

Yun Kyoung Kim

Jieun Song

Seungbo Yang

Dong Hyeop Han

Sunjin Kim

Kyungsik Hong

Sun Mi Jin

Hobeom Kwack

Jeong Won Kim

Yoon Hyun Kim

Hyun Min Song

An apparatus for manufacturing a positive electrode film and a manufacturing method using the same are provided. The apparatus includes a feeding part supplying a positive electrode material in a powder state to an upper surface of a mold conveyed by conveying means, a flattening part flattening the positive electrode material in a powder state supplied to the upper surface of the mold, a forming part applying pressure from an upper direction to the positive electrode material that has passed through the flattening part; and a conveying part comprising the conveying means sequentially conveying the mold to the feeding part, the flattening part, and the forming part.

Apparatus for manufacturing positive electrode film, manufacturing method using same, and positive electrode film manufactured using same

The present disclosure provides a method for determining the remaining capacity of a lithium-sulfur battery using a voltage drop value obtained by applying a constant current in an open-circuit state and a battery pack implementing the method.

Method for determining remaining capacity of lithium-sulfur battery, and battery pack implementing same method

The present disclosure relates to a method for manufacturing a positive electrode for a lithium-sulfur battery including: (1) mixing a sulfur-carbon composite and a binder to prepare a slurry for a positive electrode active material; (2) applying the slurry for the positive electrode active material to one surface of the current collector; (3) a first drying step of drying the current collector, to which the slurry is applied, using hot air and medium wave infrared radiation; and (4) a second drying step of drying the current collector, to which the slurry is applied, using a laser heat source after the first drying step (3).

Method for manufacturing cathode for lithium-sulfur battery

A separator for a lithium-sulfur battery and a lithium-sulfur battery including the same is provided. More particularly, a separator for a lithium-sulfur battery including a porous substrate; and a coating layer present on at least one surface of the porous substrate, wherein the coating layer includes a polymer and a graphitic carbon-based compound, wherein the polymer includes a main chain with a functional group having a non-covalent electron pair present in the main chain and a side chain with an aromatic hydrocarbon group present in the side chain.

Separator for lithium-sulfur battery and lithium-sulfur battery including same

A separator for lithium-sulfur batteries and a lithium-sulfur battery including the same. The separator for lithium-sulfur batteries includes a separator substrate, a first coating layer formed on at least one surface of the separator substrate, and a second coating layer formed on the first coating layer. The first coating layer includes a polydopamine, and the second coating layer includes a lithium-substituted water-soluble polymer. Also a method for preparing the separator.

Separator for lithium-sulfur batteries and lithium-sulfur battery comprising the same

A separator for a lithium-sulfur battery and a lithium-sulfur battery including the same are provided. More particularly, a separator for a lithium-sulfur battery including a porous substrate; and a coating layer present on at least one surface of the porous substrate, wherein the coating layer includes a polymer including a main chain, with a functional group having a non-covalent electron pair present in the main chain and a side chain with an aromatic hydrocarbon group present in the side chain.

Separator including coating layer with polymer having main chain with non-covalent electron pair and aromatic side chain and lithium-sulfur battery having the same

An electrolyte for a lithium metal battery and a lithium metal battery including the same, more specifically an electrolyte for a lithium metal battery including a lithium salt, an organic solvent and an additive, wherein the additive includes a functional group that binds to lithium metal at one end thereof and a fluorinated hydrocarbon group at the other end. The electrolyte for the lithium metal battery includes an additive including particular functional groups to improve the stability of the lithium metal and suppress the side reaction at the surface, thereby enabling the lithium metal battery to have high capacity, high stability, and long life.

Electrolyte for lithium metal battery and lithium metal battery comprising same

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Daejeon, South Korea

Dongseok Shin