Lg Chem, Ltd

Lotte Chemical Corporation

Lg Energy Solution, Ltd.

Sung Joon Park

Seung Don Choi

Dae Sik Choi

Hey Woong Park

Ho Jin Jeon

Hye Jin Kang

Mi Sun Cha

Young Heon Choi

Seong Hwan Choi

Jin Kyu Lee

Dal Mo Kang

BumHyun Lee

Jongmoon Yoon

Hee Soo Yoon

Jeeho Kim

Hanho Lee

Sung Min Kim

Yo Jin Kim

Young Jong Seo

Yong Kyu Ju

Hojin Jeon

Daesik Choi

Ji Hoon Jeon

Jae Sik Yoon

Yong Pal Park

Chan Yeong Yun

Seong Min Kim

Hyun Woo Park

Bo Hyun Kim

Jung Park

You Rim Yoon

Seung-Taek Hong

Chang Moon Jeong

Nan Ji Yun

Dal Moh Kang

Jin Ook Suh

Seung Dong Choi

An apparatus for manufacturing a pouch includes a die in which a pair of forming grooves are formed with a partition wall therebetween in a top surface thereof; and a pair of punches disposed above the die configured to form a pair of accommodation parts in a pouch film while being respectively inserted into the pair of forming grooves in a state of pressing the pouch film, wherein a pressing surface of each of the punches, which is configured to press the pouch film, has an inclined angle that is inclined upward from one end thereof disposed at a side of the partition wall toward an opposite end thereof.

Apparatus for manufacturing pouch

The present invention relates to a method for preparing 1,3-cyclohexanedicarboxylic acid capable of exhibiting excellent activity, of enhancing the reaction efficiency and economic efficiency by using a catalyst having improved durability under the reaction conditions of high temperature and strong acid, of achieving excellent conversion rates by allowing most of reactants to participate in the reaction, and of obtaining products having high purity while minimizing by-products within a shorter period of time. The method for preparing 1,3-cyclohexanedicarboxylic acid may include: reducing isophthalic acid in the presence of a metal catalyst fixed to a silica support and containing a palladium (Pd) compound and a copper (Cu) compound in a weight ratio of 1:0.1 to 0.5.

Method for preparing 1,3-cyclohexanedicarboxylic acid

The present invention relates to a method for preparing high-purity 1,3-cyclohexanedimethanol capable of achieving a high conversion rate by allowing most of the reactant to participate in the reaction, and of increasing reaction efficiency and economic efficiency by further simplifying the reaction process, while minimizing by-products within a shorter period of time. Specifically, the method for preparing 1,3-cyclohexanedimethanol includes reducing 1,3-cyclohexanedicarboxylic acid in the presence of a metal catalyst, which is fixed to a silica support and includes a ruthenium (Ru) compound, a tin (Sn) compound and a platinum (Pt) compound in a weight ratio of 1:0.8 to 1.2:1.2 to 2.4.

Method for preparing 1,3-cyclohexanedimethanol

Provided are an anode for a secondary battery including an anode collector, an anode active material coated on the anode collector, and a non-coating portion (anode tab) which protrudes from one side of the anode collector and is not coated with an anode active material, wherein the anode includes a metal member which is bonded to the non-coating portion and has higher reactivity or reducibility with respect to a metal oxide than the anode collector, and a secondary battery including the anode.

Anode for lithium secondary battery and lithium ion secondary battery including the same

Provided is an electrode assembly, and more particularly, an electrode assembly having a structure wound in a state, in which a plurality of unit cells having a stacking structure is disposed on a long sheet type separation film, and including the unit cells having two or more types of configurations of electrode materials, wherein a separator stacked on the unit cell having a stacking structure has a coating material coated on both sides thereof and the long sheet type separation film has a coating material coated on one side thereof. According to the present invention, an electrode assembly improving processability of preparation of a battery while reducing initial resistance during the preparation of the battery as well as having battery lifetime equivalent to that of a conventional battery and a lithium secondary battery including the electrode assembly may be provided.

Electrode assembly and lithium secondary battery including the same

Disclosed are a composite metal catalyst composition capable of increasing efficiency and economic feasibility of a reaction through simplification of a reaction process, and providing 1,4-cyclohexanedimethanol with high purity for a shorter time while minimizing byproducts; and a method and apparatus for preparing 1,4-cyclohexanedimethanol with high purity using the same. The present invention provides a composite metal catalyst composition for converting an aromatic dicarboxylic acid into an alicyclic diol compound, the composition containing: a first metal catalyst including a palladium (Pd) compound; and a second metal catalyst including a ruthenium (Ru) compound, a tin (Sn) compound, and a platinum (Pt) compound, and a method and apparatus for preparing 1,4-cyclohexanedimethanol using the same.

Composite metal catalyst composition, and method and apparatus for preparing 1,4-cyclohexanedimethanol using same

A lithium ion secondary battery including a compound containing at least one thiol group (&#x2014;SH) in a molecule in a unit cell of the battery is provided. By including the compound containing thiol group (&#x2014;SH) having good reactivity with copper or copper ions, the formation of dendrite through the reduction of copper ions present in the inner portion of the battery or produced during operating the battery at the surface of an anode may be prevented. The internal short between two electrodes due to the dendrite may be also prevented.

Lithium ion secondary battery without internal short

Provided is a positive electrode active material. The positive electrode active material includes: a small-diameter active material having an average particle diameter of about 0.5 &#x3bc;m and a maximum particle diameter of less than about 1 &#x3bc;m; and a large-diameter active material having an average particle diameter of about 5 &#x3bc;m to about 20 &#x3bc;m and a maximum particle diameter of less than about 100 &#x3bc;m.

Positive electrode active material, and positive electrode and lithium secondary battery including the same

Disclosed herein is a high-power, large-capacity battery module including a plurality of battery cells or unit modules connected in series to each other such that the battery cells or the unit modules are stacked while being in tight contact with each other or being adjacent to each other, wherein the battery module is fixed such that the stacked state of the battery cells or the unit modules is maintained even when the volume of the battery cells or the unit modules changes at the time of charging and discharging the battery cells or the unit modules, and a portion of an electrode terminal connection region between the battery cells or between the unit modules is weak with respect to the volume expansion of the battery cells or the unit modules such that an expansion stress caused by the swelling of the battery cells is concentrated on the electrode terminal connection region, whereby the electrode terminal connection region is broken, and therefore, an electrical cut-off occurs at the electrode terminal connection region, when the swelling exceeds a predetermined value.

Battery module of improved safety and middle or large-sized battery pack containing the same

Growing community of inventors

Seoul, South Korea

Sung Joon Park