Lg Chem, Ltd

Lg Energy Solution, Ltd.

Byung Kyu Jung

Se Woo Yang

Ji Young Kim

Cha Hun Ku

Suk Ky Chang

Sung Jong Kim

Min Soo Park

Yoon Tae Hwang

Se Ra Kim

Hyo Sook Joo

Ji Young Hwang

Duk Hyun Ryu

Sooryoung Kim

Jung Jin Kim

Sungjong Kim

Kwan Soo Lee

Chahun Ku

Dukhyun Ryu

Jungjin Kim

The present invention relates to swelling tape for filling a gap and its use. The swelling tape is, for example, applied between gaps in which a fluid is present, thereby being deformed into a three-dimensional shape to fill the gap and fix an object separated by gaps as needed.

Swelling tape for filling gap

The present application relates to a swelling tape and a method of filling a gap. The swelling tape is, for example, applied in gaps in which a fluid is present and deformed into a three-dimensional shape to fill the gaps and fix in place objects separated by gaps as needed.

A swelling tape for filling a gap and a method of filling a gap are provided. The swelling tape can be applied within the gap having a fluid to realize a 3D shape thereby filling the gap, and be used to fix a subject forming the gap as necessary.

The present invention relates to a lithium secondary battery. The present invention provides the lithium secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte solution. The negative electrode includes a water-dispersible binder and a conduction agent. The non-aqueous electrolyte solution includes fluoroethylenecarbonate (FEC). The batteries of the present invention are advantageous in that they have a high efficiency charging lifespan characteristic and enable high capacity charging in a short time.

Lithium secondary battery including water-dispersible binder, conduction agent, and fluoroethylenecarbonate

Disclosed herein is a cap assembly loaded on an open upper end of a cylindrical container of a battery in which an electrode assembly is mounted in the cylindrical container, the cap assembly including a safety vent having a predetermined notch configured to rupture by high-pressure gas generated in the battery, a current interruptive device coupled to a bottom of the safety vent by welding for interrupting current when internal pressure of the battery increases, and a current interruptive device gasket for surrounding an outer circumference of the current interruptive device, wherein the current interruptive device includes two or more through holes for gas discharge, the through holes being formed such that the sum of areas of the through holes is equal to 20% to 50% of an entire area of the current interruptive device. When high-pressure gas is generated in the battery, the cap assembly effectively interrupts current and rapidly discharges the gas, thereby greatly improving safety of the battery.

Cap assembly of improved safety and cylindrical secondary battery employed with the same

Growing community of inventors

Daejeon, South Korea

Byung Kyu Jung