Lg Energy Solution, Ltd.

Gs Caltex Corporation

Power Carbon Technology Co., Ltd.

Ung Ju Lee

Sung Chul Park

Kun Ha Park

Koo Seung Chung

Seung Gi Yang

Sang Ick Lee

Jung Woo Yoo

Young Jae Kim

Won Hee Jeong

Do Young Seung

Tae Hyun Jeon

Ki Joo Hong

Dong Shin Kim

The present invention provides an electrode for a lithium secondary battery, the electrode including an electrode current collector, an electrode active material layer formed on the electrode current collector, and an insulating layer formed on the electrode current collector and overlapping the electrode active material layer in a partial region. Here, a thickness of the electrode active material layer in the region in which the electrode active material layer and insulating layer do not overlap is d, a thickness of the insulating layer in the region in which the electrode active material layer and insulating layer do not overlap is d, and d/dis 0.02 to 0.4.

Electrode for lithium secondary battery, method of preparing the same and lithium secondary battery including the same

The present invention provides a composition for forming an insulating layer for a lithium secondary battery, which includes a binder polymer; a coloring agent including at least one selected from the group consisting of an organic dye, an oil-soluble dye and an organic phosphor; and a solvent, and has a viscosity of 1,000 cP or more at 25&#xb0; C.

Composition for forming insulating layer for lithium secondary battery and method of preparing electrode for lithium secondary battery using the same

The present invention relates to an electrode rolling roll cleaning apparatus for removing pollutants on an electrode rolling roll, the apparatus comprising: a cleaning part for cleaning a rolling roll by bringing the rolling roll into contact with a cleaning member; an air spraying part for spraying air onto the rolling roll; a heating part for applying heat to the rolling roll so as to dry the rolling roll; and a scraper part for mechanically removing a cleaning liquid and foreign substances attached to the rolling roll.

Apparatus for cleaning rolling roll for electrode and cleaning method

The present invention relates to an apparatus for cleaning press rolls for electrodes, comprising two or more cleaning units provided with cleaning members having grains. According to the present invention, the apparatus for cleaning press rolls for electrodes comprises a plurality of, i.e., two or more, cleaning units, wherein the cleaning units respectively comprise cleaning members having grains with different directions, thus allowing a residual cleaning solution and contaminants to be effectively removed. In addition, when press rolls are cleaned using the apparatus for cleaning press rolls according to the present invention, an aqueous cleaning solution and an alcoholic cleaning solution, which have different properties, can be used together, and after cleaning, the cleaning solutions do not remain on the press rolls, and thus subsequently, secondary contamination of electrodes is prevented, and accordingly, when electrodes are manufactured, the occurrence of defects in the electrodes can be reduced.

Cleaning apparatus and cleaning method for press rolls for electrodes

The present invention relates to a negative electrode active material for an electrode mixture, and to an electrochemical cell comprising the negative electrode active material, wherein the negative electrode active material comprises an amorphous carbonaceous material and a doping element, and exhibits, in the temperature range of 450&#xb0; C. to 950&#xb0; C., at least two peaks of derivative weight change calculated by thermogravimetric analysis, and exhibits a maximum heat peak output of 20 mW to 60 mW as measured by differential scanning calorimetry.

Negative electrode active material with improved safety, and secondary battery comprising same

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Daejeon, South Korea

Ung Ju Lee