Lg Chem, Ltd

Korea Institute of Machinery & Materials

In Young Kim

Won Jong Kwon

Kwon Nam Sohn

Taik Min Lee

Kwang Hyun Yoo

Kil Sun Lee

Jin Yeong Lee

Ye Hoon Im

Dong Woo Kang

Eun Jeong Kim

Seung Bo Yang

Jeong Dai Jo

Dong-Soo Kim

Seung-hyun Lee

Mi Jin Lee

Eui Yong Hwang

Byung Hun Oh

Yeu Young Youn

Su Jin Park

Byung-Oh Choi

Su Hee Lee

Young Man Choi

Kwang-Young Kim

Yulliana Kim

Pum Suk Park

Hee Yong Park

Minsung Park

Kwang Seoung Jeon

Ji Hwan Choi

Deok Kyun Yoon

The present disclosure relates to a polymer composite. According to the present disclosure, there is provided a polymer composite capable of exhibiting improved light resistance while being environmentally friendly by containing microcellulose fibers fibrillated by the growth of inorganic particles as a reinforcing material.

Polymer composite

Provided a high-pressure homogenizer comprising a channel module comprising a microchannel through which an object for homogenization passes, wherein the microchannel is provided with a first flow channel and a second flow channel sequentially arranged along the direction through which the object passes, the first flow channel is provided with a plurality of first baffles disposed so as to partition the microchannel into a plurality of spaces, the second flow channel is provided with a plurality of second baffles disposed so as to partition the microchannel into a plurality of spaces, and at least one of the first baffles is provided to be positioned between two adjacent second baffles.

High-pressure homogenizer and method for manufacturing graphene using the same

The present invention relates to a peeling device of sheet material for peeling off graphite, and the peeling device of sheet material according to the present invention is characterized in that a specific microchannel is used to apply a shear force required to peel off graphite, and simultaneously, graphene itself is not ground and the discharge flow rate of the graphene dispersion increases to increase graphene preparation efficiency.

Peeling device of sheet material including optimized outlet

The present invention relates to a conducting material composition which is allowed to provide an electrode having a higher content of uniformly dispersed carbon nanotubes, thereby providing a lithium rechargeable batteryelectrode having more improved electrical characteristics and life characteristics, a slurry composition for forming a lithium rechargeable batteryelectrode using the same, and a lithium rechargeable battery. The conducting material composition includes carbon nanotube; and a dispersing agent including a plurality of polyaromatic hydrocarbon oxides, in which the dispersing agent contains the polyaromatic hydrocarbon oxides having a molecular weight of 300 to 1000 in an amount of 60% by weight or more.

Conducting material composition, slurry composition for forming electrode of lithium rechargeable battery and lithium rechargeable battery using the same

The present invention relates to a method of producing hollow carbon capsules which can simply and effectively produce hollow carbon capsule by using polymer particles as soft templates and using a spray-drying method.

Method for producing hollow carbon capsules

Provided are a porous silicon-carbon composite, which includes a core including a plurality of active particles, a conductive material formed on at least a portion of surfaces of the active particles, first pores, and second pores, and a first shell layer which is coated on the core and includes graphene, wherein the active particles include a plurality of silicon particles, silicon oxide particles, or a combination thereof, the first pores are present in the core and are formed by agglomeration of the plurality of active particles, and the second pores are irregularly dispersed and present in the core, has an average particle diameter smaller than an average particle diameter of the active particles, and are spherical, a method of manufacturing the same, and a negative electrode and a lithium secondary battery including the porous silicon-carbon composite.

Graphene-coated porous silicon-carbon composite and method of manufacturing the same

The present invention relates to a novel dispersing agent capable of uniformly dispersing a variety of carbon-based materials in different media including aqueous solvents and a preparation method thereof, and a carbon-based material-dispersed composition including the same. The dispersing agent is a mixture of a plurality of polyaromatic hydrocarbon oxides, and the mixture includes polyaromatic hydrocarbon oxide having a molecular weight of 300 to 1000 in an amount of 60% by weight or more.

Dispersing agent, its preparation method and dispersed composition of carbon-based material comprising the same

Disclosed herein are a preparation method of graphene, capable of easily preparing a graphene flake having a smaller thickness and a large area, and a dispersed composition of graphene obtained using the same. The preparation method of graphene includes applying a physical force to dispersion of a carbon-based material including graphite or a derivative thereof, and a dispersant, wherein the dispersant includes a mixture of plural kinds of polyaromatic hydrocarbon oxides, containing the polyaromatic hydrocarbon oxides having a molecular weight of 300 to 1000 in a content of 60% by weight or more, and the graphite or the derivative thereof is formed into a graphene flake having a thickness in nanoscale under application of a physical force.

Preparation method of graphene and dispersed composition of graphene

The present invention relates to a conducting material composition capable of forming an electrode in which at least two kinds of carbon based materials are contained in a uniformly dispersed state to enable a battery such as a lithium rechargeable battery having more improved electrical and lifetime characteristics to be provided, and a slurry composition for forming an electrode of a lithium rechargeable battery and a lithium rechargeable battery using the same. The conducting material composition contains: at least two kinds of conductive carbon-based materials selected from the group consisting of carbon nano tube, graphene, and carbon black; and a dispersant containing a plurality kinds of poly aromatic hydrocarbon oxides, wherein the dispersant contains poly aromatic hydrocarbon oxides having a molecular weight of 300 to 1000 at a content of 60 wt.% or more.

Conducting material composition, and slurry composition for forming electrode of lithium rechargeable battery and lithium rechargeable battery using the same

A printing apparatus for measuring and compensating for a synchronization error is provided. The printing apparatus includes: a rotating part configured to include a roll of which the surface is made of a flexible material and a motor rotating the roll; a support part having a substrate disposed on an upper portion thereof to support the substrate and formed to relatively move in a direction parallel with a tangential direction of the rotating part and the roll; a printing pressure part formed to provide adhesion and printing pressure of the roll to the substrate by changing an interval between the rotating part and the support part; and a compensation unit configured to include a sensor unit which is disposed on a lower portion of the substrate to measure forces which are applied between the roll and the substrate at a contact position between the roll and the substrate and a control unit which performs a control to compensate for the synchronization error by using values of forces measured by the sensor unit.

Printing apparatus and method for measuring and compensating for synchronization error

Provided is an integrated coating system. An integrated coating system according to an exemplary embodiment of the present invention includes: a unwinding means provided with a roll to supply a web; a worktable roll configured to support the web supplied from the unwinding means; a plurality of printing means configured to perform printing or coating on the web supplied from the unwinding means; a plurality of curing means each of which is modulated to cure a printing material on the web passing through at least one printing means; and a winding means around which the web, of which printing or coating work is completed by passing through the curing means, is wound in a roll shape.

Integrated coating system

The present invention relates to a method for burying a conductive mesh in a transparent electrode, and more particularly, to a method which prevents a conductive mesh from protruding from a transparent electrode by burying the conductive mesh in the transparent electrode.

Method for burying conductive mesh in transparent electrode

Disclosed are a reverse gravure offset printing method and apparatus using a disposable cliche, which do not require cleaning of the cliche and do not require a large quantity of high-definition cliches because the cliche used in reverse gravure offset printing can be discarded after used once or several times and replaced with a new one, thereby achieving cost reduction.

Reverse gravure offset printing method and apparatus using disposable cliche

The present invention relates to a clich&#xe9;, and it particularly relates to a clich&#xe9; with a partition formed thereon for controlling a blanket and the partition to be parallel with each other by the partition when a partition is protrusively formed on the clich&#xe9; and the blanket is not combined with the clich&#xe9; according to a predetermined method, controlling functional ink disposed between the blanket and the clich&#xe9; to be transferred while not spreading so that it may be transferred to a substrate in a shape to be patterned when the blanket does not contact the clich&#xe9;, and an electronic printing device and method using the same.

Growing community of inventors

Daejeon, South Korea

In Young Kim