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：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：US20210347787A1

公开(公告)日：2021-11-11

申请号：US17121347

申请日：2020-12-14

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Minah LEE ,  Jihyun HONG ,  Kyung Yoon CHUNG ,  Jin-Yoo SUH ,  Sang Ok KIM ,  Hyungseok KIM ,  Inyeong KANG ,  Ju Young JANG ,  Jin Kwan CHOI

IPC: C07F1/02 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/36

Abstract: The present disclosure relates to a prelithiation solution and a method for preparing a prelithiated anode using the same. The prelithiation solution and the method for preparing a prelithiated anode using the same according to the present disclosure allow uniform intercalation of lithium ions throughout the anode chemically in a solution via a simple process of immersing the anode in a prelithiation solution having a sufficiently low redox potential as compared to an anode active material. A prelithiated anode prepared by this method has an ideal initial coulombic efficiency and a lithium secondary battery with a high energy density can be prepared based thereon. In addition, the prepared anode is advantageously applicable to large-scale production due to superior stability even in dry air.

公开(公告)号：US20230170537A1

公开(公告)日：2023-06-01

申请号：US17874966

申请日：2022-07-27

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Si Hyoung OH ,  Hyungi JO ,  Min Ji JEONG ,  Woo Joo NO ,  Hyungseok KIM ,  Minah LEE

IPC: H01M10/42 ,  C01G45/02 ,  C01G55/00

CPC classification number: H01M10/4242 ,  C01G45/02 ,  C01G55/00 ,  C01P2006/40 ,  H01M2300/0002

Abstract: Disclosed is a noble metal-manganese oxide composite catalyst for a positive electrode of an aqueous rechargeable battery that can regenerate a solvent of an aqueous electrolyte. Also disclosed are a method for preparing the composite catalyst, a positive electrode for an aqueous rechargeable battery including the composite catalyst, and an aqueous rechargeable battery including the positive electrode. The composite catalyst can regenerate reaction products, including gases continuously generated from spontaneous corrosion of the electrodes or side reactions, back to water to prevent depletion of the electrolyte. Due to this ability, the composite catalyst improves the life characteristics of the battery and suppresses the occurrence of excessive overpotentials at the electrodes. Therefore, the use of the composite catalyst is effective in preventing the performance of the battery from deteriorating. In addition, the composite catalyst can prevent an increase in the internal pressure of the battery resulting from gas generation and reduce the risk of fire or explosion, contributing to a significant improvement in the safety of the battery.

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.