公开(公告)号：US20250054951A1

公开(公告)日：2025-02-13

申请号：US18722854

申请日：2022-12-09

Applicant: OCI COMPANY LTD.

Inventor： Minkyung OH ,  Minho NOH ,  Joonhyun CHANG ,  Eunok CHI

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/587

Abstract: According to a method for manufacturing an anode active material for a secondary battery of the present invention, in manufacturing an anode active material for a secondary battery, having: i) a structure in which a pitch coating layer is formed on a composite material comprising nano silicon and amorphous carbon; or ii) a structure of a graphite core and a nano silicon-pitch shell surrounding the core, a pitch coating layer is formed by using two types of solvent, thereby improving uniformity and density of the pitch coating layer. In addition, an anode material for a secondary battery, comprising the anode active material for a secondary battery of the present invention, can improve initial discharge capacity, initial coulombic efficiency, and cycle life characteristics of a secondary battery.

公开(公告)号：US20240199887A1

公开(公告)日：2024-06-20

申请号：US18287683

申请日：2022-10-14

Applicant: OCI COMPANY LTD.

Inventor： Jaeheung PARK ,  Jaeseok LEE

IPC: C09C1/50 ,  C09C1/56

CPC classification number: C09C1/50 ,  C09C1/56 ,  C01P2002/01 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/19 ,  C01P2006/40

Abstract: The present invention relates to a highly crystalline carbon black and a preparation method therefor and, more specifically, to a highly crystalline carbon black and a preparation method therefor, wherein the carbon black can be used as a fuel cell catalyst carrier requiring a high level of durability and a conductive material for various batteries including secondary batteries. More specifically, the present invention provides: a highly crystalline carbon black having a crystallite size Lc of 4.0 nm or more, a specific surface area (BET) of 50-150 m2/g, and an oil absorption number (OAN) of 150 ml/100 g or more; and a preparation method therefor.

公开(公告)号：US11332622B2

公开(公告)日：2022-05-17

申请号：US16232607

申请日：2018-12-26

Applicant: OCI COMPANY LTD.

Inventor： Jae-Seok Lee ,  Jae-Heung Park ,  Su-Jin Son

IPC: C09C1/56 ,  C09C1/50 ,  C09C1/60

Abstract: The present invention generally relates to a method for preparing a carbon black of high resistivity through the surface treatment of the carbon black which exhibits conductivity, and a carbon black prepared by this method.

公开(公告)号：US11104848B2

公开(公告)日：2021-08-31

申请号：US16749193

申请日：2020-01-22

Applicant: OCI COMPANY LTD.

Inventor： Ho-Seong Yoo ,  Myung-Hyun Kim ,  Jun-Eun Lee ,  Pyong-Hwa Jang

IPC: C08K13/06 ,  H01L21/465 ,  C09K13/06

Abstract: Disclosed is an etching solution for a silicon substrate. More specifically, an etching solution for a silicon substrate is disclosed in which a concentration of a silane compound (silicon) in the etching solution for the silicon substrate is adjusted to improve an etching selectivity of a silicon nitride film relative to a silicon oxide film during etching of the nitride film.

公开(公告)号：US20190113578A1

公开(公告)日：2019-04-18

申请号：US16156409

申请日：2018-10-10

Applicant: OCI Company Ltd.

Inventor： MyungSup UM ,  HeeChang Ye

IPC: G01R31/36

Abstract: Provided is a device including an acquisition unit configured to obtain a time taken for a voltage level of a battery in a charge mode to change for each of a plurality of voltage sections, and a prediction unit configured to predict a state of health (SOH) of the battery based on ratio information determined by comparing the time obtained for each of the plurality of voltage sections with a reference time for each of the plurality of voltage sections. When the time taken for some voltage sections of the plurality of voltage sections is obtained by the acquisition unit, the prediction unit corrects the predicted SOH of the battery based on the time taken for the voltage level of the battery in a discharge mode to change.

公开(公告)号：US20190067948A1

公开(公告)日：2019-02-28

申请号：US15704451

申请日：2017-09-14

Applicant: OCI COMPANY LTD.

Inventor： Woo Young CHOI ,  Young Il KIM ,  Cha Ho AHN ,  Jin Sun YANG

IPC: H02J3/38 ,  H02S50/00 ,  H02J7/35 ,  H02J7/00

Abstract: Disclosed herein are a system and a method for integrally managing electric energy. The system includes a power generation unit configured to generate electric energy by photovoltaic generation, a battery unit configured to charge batteries therein with the electric energy from the power generation unit or electric energy from an external power source or to discharge the electric energy to a load, and an integrated management controller configured to control an energy transfer path of the power generation unit and the charging/discharging of the battery unit according to a predetermined power utilization algorithm and to support a user interface so that energy management status is monitored thereon.

公开(公告)号：US20190020197A1

公开(公告)日：2019-01-17

申请号：US15699475

申请日：2017-09-08

Applicant: OCI COMPANY LTD.

Inventor： Cha Ho AHN ,  Young Il KIM ,  Jin Sun YANG ,  Woo Young CHOI

IPC: H02J3/38 ,  H02J7/35 ,  H02J7/00 ,  H02J3/00

Abstract: Disclosed herein is a system for managing charging/discharging of electric energy based on prediction for PV power and load. The system includes a power generation unit configured to generate electric energy from PV power, a energy storage unit configured to be charged with the electric energy supplied from the power generation unit and electric energy supplied from an external power supplier via one common node or to be discharged with the electric energy to a load via the one common node, and a manager control unit configured to predict a PV power and a load and schedule and control charging/discharging of the energy storage unit based on data of a result of the prediction.

公开(公告)号：US20180134652A1

公开(公告)日：2018-05-17

申请号：US15719987

申请日：2017-09-29

Applicant: OCI COMPANY LTD.

Inventor： Seong Hwan LEE ,  Sang Hoon KIM ,  Kyung Yeol KIM ,  Yong Il KIM

IPC: C07C67/56 ,  C07C67/60 ,  B01J20/14 ,  B01J20/12 ,  B01D15/00 ,  B01D37/02

CPC classification number: C07C67/56 ,  B01D15/00 ,  B01D37/025 ,  B01J20/12 ,  B01J20/14 ,  C07C67/08 ,  C07C67/54 ,  C07C67/60 ,  C07C69/82

Abstract: Disclosed is a method for purifying an ester compound, including: adding a base to a resultant reaction mixture comprising a plasticizer of an ester compound synthesized by an esterification reaction of an acid and an alcohol so as to neutralize unreacted acids; applying steam to the resultant reaction mixture which has been neutralized; adding diatomite to the resultant reaction mixture which has been steamed, prior to filtration through a filter, and then subjecting the resultant reaction mixture to which the diatomite has been added to a primary filtration; and adding an activated white clay to the resultant reaction mixture, and then subjecting the resultant reaction mixture which has been primarily filtrated to a secondary filtration through a filter.

公开(公告)号：US20180134651A1

公开(公告)日：2018-05-17

申请号：US15718587

申请日：2017-09-28

Applicant: OCI COMPANY LTD.

Inventor： Seong Hwan LEE ,  Sang Hoon KIM ,  Kyung Yeol KIM ,  Yong Il KIM

IPC: C07C67/56 ,  C07C67/60 ,  C07C67/54 ,  B01D37/02

CPC classification number: C07C67/56 ,  B01D37/02 ,  C07C67/08 ,  C07C67/54 ,  C07C67/60 ,  C07C69/82

Abstract: Disclosed is a method of purifying terephthalate-based ester compounds, including: adding a base to a resultant reaction mixture comprising terephthalate-based ester compounds synthesized by esterification of terephthalic acid and alcohol so as to neutralize unreacted acids; applying steam to the resultant reaction mixture which has been neutralized; adding a filter aid to the resultant reaction mixture which has been steamed prior to filtration through a filter; and filtering through a filter the resultant reaction mixture to which the filter aid has been added, wherein the filter aid comprises diatomite particles having an average particle size of 50 μm to 90 μm.

公开(公告)号：US20180086044A1

公开(公告)日：2018-03-29

申请号：US15702259

申请日：2017-09-12

Applicant: OCI COMPANY LTD.

Inventor： Byung Hyun PARK ,  Ga Bok KIM ,  Chang Won JEONG ,  Byung Chang KANG

IPC: B32B43/00 ,  C30B25/12

CPC classification number: B32B43/006 ,  C01B33/037 ,  C30B25/12 ,  C30B29/06

Abstract: Disclosed herein are an apparatus and a method for separating polysilicon from a carbon chuck. The apparatus carries out induction-heating by applying a high-frequency current on a carbon chuck with polysilicon adhering thereto (a polysilicon-carbon chuck) retrieved from a chamber for synthesizing polysilicon, to thereby selectively heat the carbon chuck. Therefore, it is possible to melt the contact surface of the polysilicon in contact with the carbon chuck, and to separate and collect both the polysilicon and the carbon chuck without damaging them