公开(公告)号：US11411219B2

公开(公告)日：2022-08-09

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 ,  H01G9/042 ,  H01G9/008 ,  H01G9/035 ,  H01G9/145 ,  H01M4/02

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：US20240105999A1

公开(公告)日：2024-03-28

申请号：US18194274

申请日：2023-03-31

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Minah Lee ,  A Re Jeon ,  Jina Lee ,  Jihyun Hong

IPC: H01M10/0569 ,  H01M10/0525

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M2300/0037

Abstract: Provided are an electrolyte which includes a linear organic carbonate compound having a specific substituent, an electrolyte additive, and a lithium salt, has a flash point of 70° C. or higher, and shows an ionic conductivity of 0.05 mS/cm or higher at room temperature in a polyolefin based commercial separator condition, and a lithium secondary battery including the same.

公开(公告)号：US11905302B2

公开(公告)日：2024-02-20

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

CPC classification number: C07F1/02 ,  H01M4/049 ,  H01M4/366 ,  H01M10/0525 ,  H01M2004/028

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：US12283666B2

公开(公告)日：2025-04-22

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

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：US20240291024A1

公开(公告)日：2024-08-29

申请号：US18417456

申请日：2024-01-19

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hun-Gi JUNG ,  Kyung Yoon Chung ,  Seungho Yu ,  Minah Lee ,  Jimin Shim ,  Jungjin Park ,  Hyeon-Ji Shin ,  Jun Tae Kim ,  A-Yeon Kim ,  Hyeon Seong Oh ,  Minyoung Lee ,  Hee-Dae Lim

IPC: H01M10/0562

CPC classification number: H01M10/0562 ,  H01M2300/0068

Abstract: Provided is a method of producing a composite solid electrolyte. The method includes step S10 of producing an oxide-based solid electrolyte membrane by electrospinning a mixture including an oxide-based solid electrolyte precursor and a polymer, step S20 of producing an oxide-based solid electrolyte support by removing the polymer inside the oxide-based solid electrolyte membrane, and step S30 of causing the oxide-based solid electrolyte support to be impregnated with a sulfide-based solid electrolyte using a sulfide-based solid electrolyte precursor solution including a sulfide-based solid electrolyte precursor and a solvent.

公开(公告)号：US11837726B2

公开(公告)日：2023-12-05

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 ,  H01M4/02

CPC classification number: H01M4/582 ,  C01D3/04 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2002/77 ,  C01P2002/85 ,  C01P2004/04 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/028

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：US11777136B2

公开(公告)日：2023-10-03

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 ,  H01M4/04 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/525 ,  H01M10/0569

CPC classification number: H01M10/054 ,  H01M4/0445 ,  H01M4/0459 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0569

Abstract: Disclosed is a method of preparing a cathode active material useful in a sodium ion secondary battery having high reversible capacity and excellent cycle characteristics. The method for preparing a cathode active material composed of Zrw-doped NaxLiyMzOa includes the steps of (A) doping LiyMzOa with Zrw to provide Zrw-doped LiyMzOa; and (B) dissociating Li ion from the Zrw-doped LiyMzOa and inserting Na ion thereto to provide the Zrw-doped NaxLiyMzOa, wherein M is selected from Ti, V, Cr, Mn, Fe, Co, Ni, Mo, Ru, and combinations thereof, and wherein 0.005