Lg Electronics Inc.

Dongwook Lee

Sungguk Lee

Nami Byun

Kyungho Jung

Taehyeong Kim

Sumin Lee

Eunseck Kang

Koun Park

Juchul Lee

Byunghwa Seo

Junhan Kwon

Misun Lee

Munhyuk Lim

Youngmin Pi

Hongjung Kim

Yongkeon Ahn

Keeyong Kim

Disclosed are a separator for a lithium ion secondary battery, a method for producing the same, and a secondary battery using the same. A separator structure includes a support disposed inside a secondary battery. The support includes a porous polymer matrix, cellulose nano fibers dispersed in the matrix, and inorganic additives dispersed in the matrix, wherein at least some of the inorganic additives are attached to the cellulose nano fibers and are distributed in the matrix.

Separator structure, method for producing the same, and secondary battery using the same

A method according to the present disclosure may includes preparing a urea solution by dissolving urea in distilled water, adding phosphoric acid to the urea solution, adding pulp to the solution in which urea and phosphoric acid are dissolved, heating the solution such that the urea and the phosphoric acid each react with the pulp and preparing nanocellulose by washing the pulp which is completely reacted, and then grinding the pulp, in which a weight of the phosphoric acid is 10 to 50% based on a weight of the pulp.

Method for preparing nanocellulose

A heat discharging sheet using graphene and a method for manufacturing the same are disclosed. The heat discharging sheet includes a heat discharging layer having a first surface and a second surface, the heat discharging layer including graphene and metal particles, an adhesive layer disposed on a first surface of the heat discharging layer, and a protective layer disposed on a second surface of the heat discharging layer.

Heat discharging sheet and method for manufacturing the same

Disclosed is a heat discharging sheet. More specifically, disclosed is a heat discharging sheet and a display device including the same. The heat discharging sheet includes a heat discharging layer having a first surface and a second surface, an adhesive layer disposed on the first surface of the heat discharging layer, the adhesive layer being bonded to the heat source and including a thermal conductivity enhancing material, and a protective layer disposed on the second surface of the heat discharging layer, the protective layer including a thermal conductivity enhancing material.

Heat discharging sheet and display device including the same

A method for manufacturing a graphene powder capable of minimizing aggregation of graphene particles and a graphene powder manufactured using the same are disclosed. The method includes preparing a graphene solution in which graphene particles are dispersed in a solvent, aggregating the graphene particles, separating the aggregated graphene particles from the solvent, and drying the graphene particles.

Method and apparatus for manufacturing graphene powder and graphene powder manufactured using the same

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Seoul, South Korea

Dongwook Lee