Lg Chem, Ltd

Lg Energy Solution, Ltd.

Rin Jang

Byoung Hyoun Kim

So Yeon Kim

Bumgyu Choi

Mi Kyoung Jin

Su Youn Han

Yeu Young Youn

Jeong Ae Ahn

Joon Seok Lee

Sang-Woo Kim

Junghyun Song

Bong-Soo Kim

Moon Ja Nam

Seong-Hyo Park

Daeki Lee

Jae-Min Hyun

An electrolyte extraction system and a method for extracting electrolyte from a battery using the same are provided. The electrolyte extraction system comprises a first transfer unit transferring a lower jig having an upper surface on which a battery is mounted; a loading unit accommodating the lower jig together with the battery in a freezing tank filled with liquid nitrogen; a cutting unit cutting the battery inside the freezing tank; an unloading unit taking out the lower jig together with the battery from the freezing tank and accommodating the same in an electrolyte extraction tank; and a second transfer unit transferring the electrolyte extraction tank in which the battery is accommodated.

Electrolyte extraction system and method

A lithium-sulfur battery having a high capacity and a method for manufacturing the same are provided. The lithium sulfur battery comprises a positive electrode and an electrolyte solution, and has a weight ratio, W/W, of a weight of a sulfur element (S) of a sulfur-based compound present in the electrolyte solution to a weight of a sulfur element (S) of a sulfur-based compound present in the positive electrode of 0.15 or less.

Lithium secondary battery having high specific capacity

A method for extracting electrolyte solution in lithium secondary battery includes (S) freezing a secondary battery by impregnating in liquid nitrogen and then cutting it without disassembling; (S) immersing the frozen cut secondary battery in an extraction solvent to extract an electrolyte solution contained in the battery; and (S) calculating the total amount of the electrolyte solution with respect to the total size of the battery from the content of the extracted electrolyte solution, and then determining a ratio of total amount of the electrolyte solution to the content of the electrolyte solution used in manufacturing the secondary battery to obtain extraction efficiency. A system for extracting an electrolyte solution in a secondary battery is also provided.

Method and system for extracting electrolyte in lithium secondary battery by freezing and cutting the secondary battery

A high throughput gas-chromatography system for analysis of high-molecular weight additives in a polymer material, and an analysis method using same are provided. A high throughput gas-chromatography system is capable of qualitatively and quantitatively analyzing, at the same time, high-molecular weight additives in a polymer, and reducing analysis time by increasing a heating rate and a column maximum temperature.

High throughput gas-chromatography system for additive analysis, and analysis method using same

The present disclosure provides a method for analyzing an additive in a water-based polymer sample, comprising the steps of: (S1) putting the water-based polymer sample containing a polymer, the additive, and water as a solvent into a vial; (S2) putting a porous pouch containing a superabsorbent polymer (SAP) into the vial to absorb the water into the superabsorbent polymer; (S3) removing the porous pouch from the vial and collecting the concentrated polymer sample remaining in the vial; and (S4) performing a pyrolysis gas chromatography (Py-GC)/mass spectrometer (MS) analysis by introducing the concentrated polymer sample to the Py-GC/MS.

Method and system for analysis of additives in water-based polymer sample

The present invention relates to a method for analyzing the molecular weight of each polymer comprised in a polymer compound, and an analysis system used therefor. More specifically, the present invention relates to an analysis method of components of polymer compounds and molecular weight by component using a system in which size-exclusion chromatography (SEC)-pyrolysis gas chromatography (Py-GC)-mass spectrometry (MS) are connected in series and to an analysis system used in the method.

Method for analyzing molecular weight of each component of polymer compound, and analysis system used therefor

The present disclosure relates to an apparatus and a method for analysis of a multi-layer adhesive film and provides the apparatus comprising a specimen tray unit; a blade unit; a liquid nitrogen supply unit; and a driving unit, and the method comprising a specimen fixing step; a specimen cooling step; a specimen pre-collection step; a specimen collection step; and a blade separation step.

Growing community of inventors

Daejeon, South Korea

Rin Jang