Lg Chem, Ltd

Lg Energy Solution, Ltd.

Other

Hyun Chul Jung

Ki Woong Kim

Sungjin Kwon

Jeong Heon Ahn

Kyoung Won Kang

Wan Kyu Oh

Sae Hume Park

Ji Ha Kim

Yu Jin An

Hyun Tae Kim

Soonho Ahn

Young Hun Kim

Young Shil Do

Won Seok Kim

Un Sok Park

Hwa Seok Park

Hoyoung Kim

The present invention relates to a method of producing an acrylonitrile dimer, the method including: feeding an acrylonitrile monomer, a nonpolar solvent, an alcohol solvent, and a phosphorus-based catalyst to a dimerization reactor to perform a dimerization reaction and reaction product to a distillation column; feeding the acrylonitrile monomer, the nonpolar solvent, and the alcohol solvent from the distillation column to the dimerization reactor; feeding an acrylonitrile dimer and the phosphorus-based catalyst from the distillation column to an extraction device; oxidizing the phosphorus-based catalyst by feeding water including an acid component to the extraction device to inactivate the phosphorus-based catalyst; and separating the inactivated phosphorus-based catalyst and the acrylonitrile dimer.

Method of producing acrylonitrile dimer

Provided is a method of preparing an acrylonitrile dimer, the method including: supplying an acrylonitrile monomer, a phosphorus-based catalyst, an alcohol solvent, and an ionic liquid to a reactor to perform a dimerization reaction to prepare a single-phase dimerization reaction product (S10); supplying a reactor discharge stream including the dimerization reaction product to a first distillation column, separating the alcohol solvent and an unreacted acrylonitrile monomer from an upper discharge stream, and supplying a lower discharge stream including an acrylonitrile dimer, the ionic liquid, and the phosphorus-based catalyst to a second distillation column (S20); and separating an upper discharge stream including the acrylonitrile dimer and separating a lower discharge stream including the ionic liquid and the phosphorus-based catalyst, from the second distillation column (S30).

Method for preparing acrylonitrile dimer

Provided is a method of preparing an acrylonitrile dimer including: supplying an acrylonitrile monomer, a phosphorus-based catalyst, and an alcohol solvent to a reactor to perform a dimerization reaction to produce dimerized reactants (S); cooling the dimerized reactants to crystallize the phosphorus-based catalyst (S); separating the crystallized phosphorus-based catalyst (S); and supplying the dimerized reactants from which the phosphorus-based catalyst is separated to a distillation column to separate the acrylonitrile dimer (S).

Method of preparing acrylonitrile dimer

An electrode for a secondary battery and a method for manufacturing the electrode are disclosed. According to an embodiment, a first cutting line and a second cutting line, along which an electrode sheet is cut, may cross each other to form a crossing area on the electrode sheet, and in the crossing area, the first cutting line may be formed as a straight line, and one end of the straight line may be connected to a curved line constituting a portion of the first cutting line, wherein the straight line may be connected to the curved line by a tangent line.

Electrode for secondary battery and method for manufacturing the same

An apparatus for manufacturing the electrode assembly, in which an electrode and a separator are alternately stacked on a stack table, and the separator is folded in a zigzag shape so that the electrode is disposed between the folded separators to manufacture the electrode assembly, has a separator supplier configured to supply the separator to the stack table, and a separator tension adjuster configured to constantly adjust tension of the separator supplied to the stack table. The separator supplier comprises a separator winding roll around which the separator is wound, and the separator tension adjuster adjusts a supply height of the separator winding roll to adjust the tension of the separator.

Apparatus for manufacturing electrode assembly controlling tension of separator by adjusting height of winding roll, electrode assembly manufactured therethrough, and secondary battery

Disclosed herein is a secondary battery having an electrode assembly mounted in a receiving part of a pouch-shaped battery case, wherein convex parts formed to protrude from the battery case upward are provided at the upper end of the receiving part of the battery case corresponding to electrode tabs of the electrode assembly so as to support coupling portions (V-form regions) between the electrode tabs and corresponding electrode leads against injection pressure of a holt melt resin during injection molding to form a pack case with respect to the secondary battery.

Secondary battery of improved safety

Disclosed herein is a battery cell configured to have a structure in which an electrode assembly that can be charged and discharged is mounted in a plate-shaped battery case, a cathode terminal and an anode terminal protrude from one end of the battery case, the electrode terminals deviate to one side from a vertical central axis of a battery body when viewed from above, and a depressed portion is formed at one side of the battery body.

Battery cell of irregular structure and battery module employed with the same

A layered medical image forming method includes a layered medical image forming step of layering first to n-th value of interest look-up table (VOI LUT)-applied medical images (where n is a natural number), which are obtained by applying first to n-th VOI LUTs included in variation information of the original of a medical image to the original of the medical image so as to allow another system to display the same variation information.

Layered medical image forming, receiving, and transmitting methods

Disclosed herein is a battery cell configured to have a structure in which an electrode assembly including a separator disposed between a cathode and an anode is mounted in a battery case, wherein an asymmetric structure with respect to a central axis crossing the electrode assembly in plane is formed at a portion of at least one side of the electrode assembly constituting the outer circumference of the electrode assembly.

Growing community of inventors

Daejeon, South Korea

Hyun Chul Jung