Lg Chem, Ltd

Lg Energy Solution, Ltd.

Hye Lim Shim

Cha Hun Ku

Duk Hyun Ryu

Nak Gi Sung

Jung Jin Kim

Sang Hoon Choy

Jung Woo Yoo

Jun Muk Lim

Wooha Kim

Shanghao Piao

A positive electrode slurry composition for a secondary battery which includes a positive electrode active material, a carbon-based conductive agent having a specific surface area (Brunauer-Emmett-Teller (BET)) of 100 m/g to 200 m/g, a binder, and a nitrile-based copolymer which has an electrolyte solution swelling degree defined by Equation (1) of 200% or less and does not contain a functional group other than a cyano group is provided:electrolyte solution swelling degree (%)={()/}×100  Equation (1)

Positive electrode slurry composition for secondary battery, and positive electrode for secondary battery and secondary battery which are prepared by using the same

Provided is a positive electrode slurry for preparing a positive electrode for a lithium secondary battery,

Positive electrode slurry including oxalic acid, preparation method thereof, positive electrode for secondary battery, and secondary battery

The present invention relates to an electrode comprising multi-layered electrode active material layer and a secondary battery comprising the same. According to the embodiments of the present invention comprises electrode having multi-layered electrode active material layer, wherein the content of the active materials which forms the electrode active material layers is equally maintained and the loading amounts at each layer are either the same or different from each other, thereby solving the problem of performance deterioration caused by an increase in battery resistance due to non-uniform dispersion of a binder or the like.

Electrode including multi-layered electrode active material layer and secondary battery including the same

The present invention relates to an electrode assembly including a separator and a lithium secondary battery including the same for improving safety. The electrode assembly including a positive electrode, a negative electrode and a separator further includes a gasification material possibly being electrolyzed at a certain voltage to generate a gas. Since the electrode assembly and the lithium secondary battery including the same include the gasification material possibly being electrolyzed at the certain voltage to generate the gas, the safety of the battery may be increased. Since the gasification material is coated on the surface of the separator not on the electrode, the resistance increase of the battery may be restrained and the capacity lowering of the battery may be remarkably decreased. The lifetime of the battery is good.

Electrode assembly including separator for improving safety and lithium secondary battery including the same

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Daejeon, South Korea

Hye Lim Shim