公开(公告)号：US20220144652A1

公开(公告)日：2022-05-12

申请号：US17584625

申请日：2022-01-26

Applicant: LG CHEM, LTD.

Inventor： Jong Hun KIM ,  Je Kyun LEE

IPC: C01B33/24 ,  B01J13/00

Abstract: Provided is a method of preparing a metal oxide-silica composite aerogel and a metal oxide-silica composite aerogel having an excellent weight reduction property prepared by the method. The method comprises adding an acid catalyst to a first water glass solution to prepare an acidic water glass solution (step 1); adding a metal ion solution to the acidic water glass solution to prepare a precursor solution (step 2); and adding a second water glass solution to the precursor solution and performing a gelation reaction (step 3).

公开(公告)号：US20210016239A1

公开(公告)日：2021-01-21

申请号：US16492912

申请日：2018-09-07

Applicant: LG CHEM, LTD.

Inventor： Jong Hun KIM ,  Je Kyun LEE

IPC: B01J13/00 ,  C01B33/158

Abstract: Provided are a method of preparing a metal oxide-silica composite aerogel, and a metal oxide-silica composite aerogel having an excellent weight reduction property prepared by the method. The method includes a step of adding an acid catalyst to a first water glass solution to prepare an acidic water glass solution (step 1); a step of adding a metal ion solution to the acidic water glass solution to prepare a precursor solution (step 2); and a step of adding a second water glass solution to the precursor solution and performing a gelation reaction (step 3) to yield a metal oxide-silica composite wet gel, wherein, in steps 2 and 3, bubbling of an inert gas is performed during the adding of the metal ion solution or the second water glass solution, respectively.

公开(公告)号：US20200179894A1

公开(公告)日：2020-06-11

申请号：US16315572

申请日：2017-10-10

Applicant: LG CHEM, LTD.

Inventor： Tae Gyeong KANG ,  Je Kyun LEE ,  Jong Hun KIM

IPC: B01J13/00 ,  C01B33/158 ,  C01B33/159

Abstract: A method for producing a plate type metal-silica composite aerogel and a plate type metal-silica composite aerogel produced thereby in which the metal salt concentration and the basic catalyst concentration are adjusted to form a plate type intermediate first, and then an appropriate amount of a water glass solution is added, thereby enabling the plate type metal-silica composite aerogel to be produced in a short time under conditions of low temperature and atmospheric pressure, so that the process is simpler than the conventional production method, and the cost is reduced, which is excellent in economy. Also provided is a plate type metal-silica composite aerogel, which is produced by the claimed method and has excellent dispersibility that requires no additional surface modifier.

公开(公告)号：US20170305749A1

公开(公告)日：2017-10-26

申请号：US15526221

申请日：2016-10-18

Applicant: LG CHEM, LTD.

Inventor： Hyun Woo JEON ,  Jong Hun KIM ,  Je Kyun LEE

IPC: C01B33/158

CPC classification number: C01B33/1585 ,  B01J13/0091 ,  C01B33/158 ,  C01P2006/10 ,  C01P2006/12

Abstract: The present invention relates to a method of preparing a hydrophobic metal oxide-silica composite aerogel, in which a degree of hydrophobicity may be controlled while having a high specific surface area and a low tap density, and a hydrophobic metal oxide-silica composite aerogel prepared thereby. The preparation method according to the present invention may not only have excellent productivity and economic efficiency due to a relatively simpler preparation process and shorter preparation time than the related art, but may also perform an effective surface modification reaction by using a small amount of a surface modifier. Thus, since the surface modification reaction may be easily performed by using only a very small amount of the surface modifier, a hydrophobic metal oxide-silica composite aerogel containing about 1 wt % to 2 wt % of carbon may be prepared.

公开(公告)号：US20210206648A1

公开(公告)日：2021-07-08

申请号：US17056841

申请日：2019-11-27

Applicant: LG CHEM, LTD.

Inventor： Jong Hun KIM ,  Se Won BAEK

IPC: C01B33/158

Abstract: A method for producing a silica aerogel, the method including preparing a reactant by adding a basic catalyst to a first silica precursor solution, performing primary gelation in which the reactant is stirred to form a gel precursor, introducing a second silica precursor solution to a fiber, and performing a secondary gelation in which the gel precursor is introduced to the fiber to which the second silica precursor solution was introduced to form a silica aerogel.

公开(公告)号：US20180342715A1

公开(公告)日：2018-11-29

申请号：US15969092

申请日：2018-05-02

Applicant: LG CHEM, LTD.

Inventor： Jeong Min HA ,  Jong Hun KIM ,  Soo Young KIM ,  Hye Dam JO

IPC: H01M2/08 ,  H01M10/0585 ,  H01M10/0525

Abstract: Provided are a secondary battery in which a sealing part is prevented from damaged by external force and a method for manufacturing the same. The method for manufacturing the secondary battery includes a preparation process of preparing a pouch in which an electrode assembly and an electrolyte are accommodated, a bonding process of bonding a bonding area disposed on a circumferential portion of the pouch by using a bonding device; and a sealing process of sealing a portion of the outside of the bonding area of the pouch that is bonded in the bonding process by using a sealing device.

公开(公告)号：US20180127279A1

公开(公告)日：2018-05-10

申请号：US15577750

申请日：2016-06-01

Applicant: LG CHEM, LTD.

Inventor： Jong Hun KIM ,  Je Kyun LEE

IPC: C01B33/158 ,  B01J20/04

CPC classification number: C01B33/1585 ,  B01J20/04 ,  C01D1/02 ,  C01F5/02 ,  C01F5/06 ,  C01F5/30 ,  C01F11/24 ,  C01P2002/50 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/32

Abstract: Provided are a method of preparing a metal oxide-silica composite aerogel which includes preparing a silicate solution by dissolving water glass at a concentration of 0.125 M to 3.0 M, after adding and mixing a metal salt solution having a metal ion concentration of 0.125 M to 3.0 M to the silicate solution, precipitating metal oxide-silica composite precipitates by adjusting a pH of a resulting mixture to be in a range of 3 to 9, and separating and drying the metal oxide-silica composite precipitates, wherein the metal salt solution includes a magnesium (Mg)-containing metal salt in an amount such that an amount of magnesium ions is greater than 50 mol % based on a total mole of metal ions in the metal salt solution, and a metal oxide-silica composite aerogel having low tap density and high specific surface area prepared by the method.

公开(公告)号：US20180002182A1

公开(公告)日：2018-01-04

申请号：US15537188

申请日：2016-10-18

Applicant: LG CHEM, LTD.

Inventor： Hyun Woo JEON ,  Jong Hun KIM ,  Je Kyun LEE

IPC: C01B33/158 ,  C08K3/36 ,  B01J13/00

CPC classification number: C01B33/158 ,  B01J13/0091 ,  C01B33/1585 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/90 ,  C08K3/36

Abstract: The present invention relates to a method of preparing a hydrophobic metal oxide-silica composite aerogel having a high specific surface area and a low tap density and a hydrophobic metal oxide-silica composite aerogel prepared thereby. Thus, the preparation method may not only have excellent productivity and economic efficiency due to a relatively simpler preparation process and shorter preparation time than the related art, but may also prepare a hydrophobic metal oxide-silica composite aerogel having a high specific surface area and a low tap density.

公开(公告)号：US20230050685A1

公开(公告)日：2023-02-16

申请号：US17797788

申请日：2021-10-01

Applicant: LG CHEM, LTD.

Inventor： Jong Hun KIM ,  Mi Ri KIM ,  Se Won BAEK

IPC: C01B33/158 ,  C01B33/152 ,  C01B33/159 ,  C03C25/16 ,  C03C25/70 ,  C03C25/42

Abstract: The present disclosure provides a method for manufacturing an aerogel blanket, wherein a surface modification process is performed under acid conditions while using a non-toxic catalyst. Under such a process, a solvent substitution process or a washing process may be omitted to simplify the manufacturing process. Further, collapse of a gel structure due to shrinkage is prevented and the efficiency of surface modification is high even when atmospheric pressure drying is performed, so that an aerogel having excellent thermal conductivity and degree of hydrophobicity may be manufactured. Also provided is an aerogel blanket manufactured by the method, thereby having low thermal conductivity and a low moisture impregnation rate since a hydrophobic group is uniformly formed inside a substrate.

公开(公告)号：US20190248671A1

公开(公告)日：2019-08-15

申请号：US16335215

申请日：2017-10-25

Applicant: LG CHEM, LTD. ,  CHANGWON NATIONAL UNIVERSITY INDUSTRY ACADEMY COOPERATION CORPS

Inventor： Jong Hun KIM ,  Je Kyun LEE ,  Dong Sik BAE ,  Yeon Bin CHOI

IPC: C01G23/00

CPC classification number: C01G23/005 ,  C01P2002/30 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/17 ,  C01P2004/54 ,  C01P2004/62 ,  C01P2006/32

Abstract: The present invention relates to a method for producing potassium titanate, and the present invention provides a method for producing potassium titanate which uses anatase-phased titanium dioxide to simplify the process by a hydrothermal method, and thus may improve economical efficiency and productivity, and in which the reaction temperature, the reaction time and the molar ratio of a precursor may be controlled to produce a high-purity potassium titanate whisker having a nano size of an uniform shape.