Lg Chem, Ltd

Other

Lg Energy Solution, Ltd.

Hyung Suk Cho

Sang Hoon Choy

Hyun Sik Chae

Hyeon Sik Choi

Dong Hyun Kim

Houng Sik Yoo

Je Young Kim

Dong Hyun Cho

Jin Young Son

Gye Min Kwon

Jin Myung Cha

Jung Woo Yoo

Seul Ki Kim

Byoung Hoon Ahn

Kwang Ho Jeong

Jung Keun Yoo

Kyung Hwa Woo

Jong Heon Seol

Ye Cheol Rho

Hee Soo Na

Chan Sub Lee

A conductive material dispersion liquid, and an electrode and a lithium secondary battery manufactured using the same. The conductive material dispersion liquid includes a carbon-based conductive material, a dispersant, and a dispersion medium. The dispersant is a copolymer including a first repeating unit represented by Chemical Formula 1, a second repeating unit represented by Chemical Formula 2, and a third repeating unit represented by Chemical Formula 3, and the dispersion medium is a non-aqueous solvent.

Conductive material dispersion liquid, electrode and lithium secondary battery prepared by using the same

The present invention relates to a carbon nanotube dispersion including carbon nanotubes, a polymer dispersant containing an amine, a phenolic compound including two or more aromatic rings, and an aqueous solvent, wherein the polymer dispersant and the phenolic compound including two or more aromatic rings are included in a weight ratio of 100:1 to 100:90, and having low viscosity and a small change of viscosity over time.

Carbon nanotube dispersion and method for preparing the same

Provided is a method for providing contents for a mobile terminal on the basis of user touch and hold time, the method including the step of: recognizing a user's touch on a display screen through the mobile terminal and determining whether a position where the user's screen touch is recognized is constantly maintained for a given period of time; setting a popup region on a position spaced apart from the position where the screen is touched through the mobile terminal and displaying previously set contents corresponding to the touch and hold time on the popup region; and determining whether the touch is finished or not through the mobile terminal, and if it is determined that the touch is not finished, displaying the contents corresponding to the touch and hold time on the popup region.

Method for providing contents for mobile terminal on the basis of user touch and hold time

The present invention relates to a grinder using induced electric fields. The grinder comprises: a grinding unit on which a plurality of protrusions for cutting are disposed on an outer circumferential surface thereof; a power unit disposed in the grinding unit to generate electric fields and attach the conductive materials to the grinding unit; and a chamber disposed outside the grinding unit and comprising beads that disperse and grind the conductive materials attached to the grinding unit, wherein the conductive materials have directionality by the electric fields of the power unit.

Grinder using induced electric field

Disclosed are an apparatus and method for preparing slurry for a secondary battery. According to the present invention, a solvent is intermittently injected into a mixer for preparing the slurry to measure a torque value applied to the mixer and thereby to obtain a maximum value of the torque value applied to the mixer. Then, a kneading point that is a mixing ratio of the powder and the solvent, which are used for preparing the slurry, is calculated to determine an optimized kneading point without error and through an automatic process.

Apparatus and method for preparing slurry for secondary battery

The present invention provides an anode slurry for a secondary battery and an anode comprising the same, in which the dispersibility of an anode active material is improved by increasing the adsorption amount of CMC with respect to the anode active material by adjusting the degree of substitution or physical properties such as molecular weight, and a CMC blend amount is reduced so as to increase the slurry solid content and reduce the resistance of a battery.

Anode slurry for secondary battery for improving dispersibility and reducing resistance, and anode comprising same

An electrode for a lithium secondary battery includes a current collector, primer layer formed on a side of the current collector and includes a first conductive agent, a first binder and a first dispersant. Further, an active material layer is formed on a side of the primer layer disposed opposite to the current collector and includes an active material. Additionally, the lithium secondary battery includes a positive electrode, a negative electrode or both, a separator disposed between the positive electrode and the negative electrode and an electrolyte. The structural stability and adhesion of the electrode is improved, a ratio of a binder in the active material layer is reduced and the internal resistance is reduced.

Electrode for lithium secondary battery and lithium secondary battery including the same

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Daejeon, South Korea

Hyung Suk Cho