公开(公告)号：US20220181604A1

公开(公告)日：2022-06-09

申请号：US17179354

申请日：2021-02-18

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon CHUNG ,  Ha Kyung ROH ,  Moeez IQRA ,  Eun Seong KIM ,  Hun-Gi JUNG ,  Won Young CHANG

IPC: H01M4/36 ,  H01M4/58 ,  H01M4/48 ,  H01M10/054

Abstract: The present disclosure provides a composite wherein NaCl nanoparticles are uniformly dispersed on reduced graphene oxide (rGO), a positive electrode active material including the same, a sodium secondary battery including the same, and a method for preparing the same. The positive electrode active material according to the present disclosure has a structure wherein NaCl nanoparticles are uniformly dispersed on rGO in a one-step process through chemical self-assembly. Therefore, the positive electrode active material according to the present disclosure exhibits superior electrochemical properties with high capacity because the small NaCl particles are dispersed uniformly and is economically favorable because the preparation process is simple.

公开(公告)号：US20210167386A1

公开(公告)日：2021-06-03

申请号：US16817757

申请日：2020-03-13

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Hee-Dae LIM ,  Si Hyoung OH ,  Hun-Gi JUNG ,  Minah LEE ,  Hyungseok KIM ,  Sang Ok KIM ,  Young Soo YUN

IPC: H01M4/587 ,  H01M10/054 ,  H01M10/0568 ,  H01G9/008 ,  H01G9/042 ,  H01G9/035 ,  H01G9/145

Abstract: Disclosed is a calcined carbon material for a magnesium battery anode. The calcined carbon material includes catalytic carbon nanotemplates having a network structure in which nanofibers are entangled three-dimensionally. The calcined carbon material can be used as a magnesium battery anode material. Also disclosed is a method for preparing the calcined carbon material.

公开(公告)号：US20190319265A1

公开(公告)日：2019-10-17

申请号：US16268891

申请日：2019-02-06

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon CHUNG ,  Hun-Gi JUNG ,  Ji-Young KIM ,  Ghulam ALI ,  Mobinul ISLAM ,  Sang Ok KIM ,  Hyungseok KIM

IPC: H01M4/525 ,  H01M10/054 ,  H01M4/131 ,  H01M4/1391 ,  C01G51/04

Abstract: The present disclosure relates to an anode active material for a sodium ion secondary battery, a method for preparing the same, and a sodium ion secondary battery including the same. More particularly, the anode active material for a sodium ion secondary battery includes a cobalt tin spinel oxide obtained by a simple precipitation process, and can be applied to a sodium ion secondary battery having high capacity characteristics.

公开(公告)号：US20190067745A1

公开(公告)日：2019-02-28

申请号：US15991580

申请日：2018-05-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyoungchul KIM ,  Hae-Weon LEE ,  Byung Kook KIM ,  Jong Ho LEE ,  Ji-Won SON ,  Hun-Gi JUNG ,  Sung Jun CHOI ,  Eu Deum JUNG

IPC: H01M10/0585 ,  H01M10/0562 ,  H01M10/052

Abstract: The present invention relates to a method for preparing a solid electrolyte using a sonochemical process, which includes a step of preparing a reaction vessel holding a solid electrolyte raw material in a solid or liquid form and a step of reacting the solid electrolyte raw material by applying energy into the reaction vessel by irradiating an ultrasound to the reaction vessel.

公开(公告)号：US20190051932A1

公开(公告)日：2019-02-14

申请号：US15994269

申请日：2018-05-31

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyoungchul KIM ,  Hae-Weon LEE ,  Byung Kook KIM ,  Jong Ho LEE ,  Ji-Won SON ,  Hun-Gi JUNG ,  Eu Deum JUNG ,  Sung Jun CHOI ,  Bin Na YOON

IPC: H01M10/0562 ,  C01B17/02 ,  C01B17/22 ,  H01M4/02

Abstract: The present invention relates to a lithium-ion-conductive sulfide-based solid electrolyte which contains lithium (Li), sulfur (S), phosphorus (P), indium (In) and selenium (Se) and has a crystal structure of InSe and a method for preparing the same.

公开(公告)号：US20210151756A1

公开(公告)日：2021-05-20

申请号：US16829689

申请日：2020-03-25

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Moeez IQRA ,  Ji-Young KIM ,  Jaeho PARK ,  Hee-Dae LIM ,  Hun-Gi JUNG ,  Won Young CHANG ,  Minah LEE ,  Seungho YU ,  Kyung Yoon CHUNG

IPC: H01M4/58 ,  C01D3/04

Abstract: The present disclosure relates to a cathode active material for a secondary battery, a cathode for a secondary battery including the same, a secondary battery including the cathode for a secondary battery and manufacturing methods thereof. More particularly, it is possible to obtain a secondary battery having excellent electrochemical characteristics by electrochemically inducing a structural phase change in the cathode active material of a secondary battery including NaCl as a cathode active material.

公开(公告)号：US20210075053A1

公开(公告)日：2021-03-11

申请号：US16725656

申请日：2019-12-23

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon CHUNG ,  Dong Hyun KIM ,  Juhyeon AHN ,  Jaeho PARK ,  Ji-Young KIM ,  Min Kyung CHO ,  Byung Won CHO ,  Hun-Gi JUNG ,  Minah LEE ,  Seungho YU ,  Hyungseok KIM

IPC: H01M10/054 ,  H01M10/0569 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/04

Abstract: The present disclosure relates to a cathode active material for a sodium ion secondary battery having high reversible capacity and excellent cycle characteristics, and a method for preparing the same. The cathode active material for a sodium ion secondary battery shows high reversible capacity and excellent cycle characteristics, when it is applied to a secondary battery. Therefore, when the cathode active material is used for manufacturing a cathode for a sodium ion secondary battery and the cathode is applied to a sodium ion secondary battery, the battery can substitute for the conventional expensive lithium ion secondary battery and can be applied to various industrial fields.

公开(公告)号：US20190074498A1

公开(公告)日：2019-03-07

申请号：US15944129

申请日：2018-04-03

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon CHUNG ,  Dong Hyun KIM ,  Liau Dieky SUSANTO ,  Jaeho PARK ,  Jiwon JEONG ,  Hun-Gi JUNG ,  Won Young CHANG ,  Won Chang CHOI ,  Byung Won CHO

IPC: H01M2/10 ,  H01M10/48 ,  G01N23/20033 ,  G01N23/207

Abstract: An in-situ coin cell support device for transmission mode X-ray diffraction analysis capable of controlling temperature. The device includes a coin cell seating unit including a seating part for receiving an in-situ coin cell, a positive electrode tab coupled to the seating part and connected to a positive electrode of the in-situ coin cell, and a negative electrode tab coupled to the seating part and connected to a negative electrode of the in-situ coin cell, a housing having a heat-insulating function, which surrounds the coin cell seating unit such that the positive and negative electrode tabs extend outwards from the housing and which includes one side wall and an opposite side wall arranged opposite each other with the in-situ coin cell interposed therebetween, and a temperature control unit coupled to the exterior of the housing and including an inlet port, an outlet port, and a flow passage.

公开(公告)号：US20180034044A1

公开(公告)日：2018-02-01

申请号：US15396752

申请日：2017-01-02

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon CHUNG ,  Ji-Hoon LEE ,  Ghulam ALI ,  Hun-Gi JUNG ,  Wonchang CHOI ,  Won Young CHANG ,  Si Hyoung OH ,  Byung Won CHO

IPC: H01M4/36 ,  H01M4/587 ,  H01M10/054 ,  H01M4/58

CPC classification number: H01M4/364 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/387 ,  H01M4/388 ,  H01M4/582 ,  H01M4/587 ,  H01M4/625 ,  H01M10/054 ,  H01M2004/021 ,  H01M2004/027

Abstract: Disclosed is an anode material for a sodium secondary battery. The anode material includes a tin fluoride-carbon composite composed of a tin fluoride and a carbonaceous material. The anode material can be used to improve the charge/discharge capacity, charge/discharge efficiency, and electrochemical activity of a sodium secondary battery. Also provided are a method for preparing the anode material and a sodium secondary battery including the anode material.

公开(公告)号：US20250062310A1

公开(公告)日：2025-02-20

申请号：US18680217

申请日：2024-05-31

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jihyun HONG ,  Minah LEE ,  Jinkwan CHOI ,  Hun-Gi JUNG ,  Dong-Ik KIM

IPC: H01M4/04 ,  H01M4/02 ,  H01M4/485 ,  H01M4/62

Abstract: Provided are a prelithiation method of a silicon-based active material, the prelithiation method including step S1 of immersing the silicon-based active material in a prelithiation solution including an organic solvent and a lithium-hydrocarbon molecule complex, step S2 of obtaining a powder by washing the silicon-based active material with the organic solvent and drying the silicon-based active material, and step S3 of performing a heat treatment on the powder at a temperature of 400° C. to 800° C. in an inert gas atmosphere, and a silicon-based active material prelithiated by the method.