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：US08889297B2

公开(公告)日：2014-11-18

申请号：US13738044

申请日：2013-01-10

Applicant: Korea Institute of Science and Technology

Inventor： Kyung Yoon Chung ,  Dieky Susanto ,  Won Young Chang ,  Byung Won Cho

IPC: H01M4/13 ,  H01M4/50

CPC classification number: H01M4/505 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/364 ,  H01M10/052

Abstract: The present disclosure relates to a nanocomposite cathode active material for a lithium secondary battery, a method for preparing same, and a lithium secondary battery including same. More particularly, the present disclosure relates to a nanocomposite cathode active material for a lithium secondary battery including: a core including LiMn2O4; and LiMn(PO3)3 distributed on the surface of the core. In accordance with the present disclosure, the time and cost for manufacturing a lithium secondary battery can be reduced and the manufactured lithium secondary battery has superior electrochemical properties.

Abstract translation: 本发明涉及一种锂二次电池用纳米复合阴极活性物质及其制备方法，以及包含锂二次电池的锂二次电池。 更具体地，本公开涉及一种用于锂二次电池的纳米复合阴极活性材料，其包括：包含LiMn 2 O 4的核; 和分布在芯表面上的LiMn（PO3）3。 根据本公开，可以减少制造锂二次电池的时间和成本，并且制造的锂二次电池具有优异的电化学性能。

公开(公告)号：US09660260B2

公开(公告)日：2017-05-23

申请号：US14842752

申请日：2015-09-01

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Si Hyoung Oh ,  Byung Won Cho ,  Kyung Yoon Chung ,  Hae Ri Lee

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/58 ,  H01M10/052 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/5825 ,  H01M10/052 ,  H01M2004/028 ,  Y02E60/122

Abstract: Provided are a cathode active material coated with a fluorine-doped spinel-structured lithium metal manganese oxide, a lithium secondary battery including the same, and a method for preparing the same. The cathode active material has improved chemical stability and provides improved charge/discharge characteristics at elevated temperature (55-60° C.) and high rate. The cathode active material allows lithium ions to pass through the coating layer with ease and is chemically stable, and thus may be used effectively as a cathode active material for a high-power lithium secondary battery.

公开(公告)号：US09543616B2

公开(公告)日：2017-01-10

申请号：US14633807

申请日：2015-02-27

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Si Hyoung Oh ,  Byung Won Cho ,  Kyung Yoon Chung ,  Joong Kee Lee ,  Won Young Chang ,  Jae Hyun Cho ,  Junghoon Ha

IPC: H01M10/54 ,  H01M10/0567 ,  H01M10/054 ,  H01M10/0568 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M10/054 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0025

Abstract: Disclosed is an electrolyte solution for a magnesium rechargeable battery with a high ionic conductivity and a wide electrochemical window compared to the conventional electrolyte solution. The electrolyte solution is prepared by dissolving magnesium metal into the ethereal solution using combinations of metal chloride catalysts. The electrolyte solution can be applied to fabricate magnesium rechargeable batteries and magnesium hybrid batteries with a markedly increased reversible capacity, rate capability, and cycle life compared to those batteries employing the conventional electrolyte solution. Also disclosed is a method for preparing the electrolyte.

Abstract translation: 公开了与常规电解质溶液相比，具有高离子电导率和宽电化学窗口的镁可充电电池的电解液。 通过使用金属氯化物催化剂的组合将镁金属溶解在醚溶液中来制备电解质溶液。 与使用常规电解质溶液的电池相比，电解质溶液可用于制造镁可充电电池和镁混合电池，其具有显着增加的可逆容量，速率能力和循环寿命。 还公开了一种制备电解质的方法。

公开(公告)号：US09202604B2

公开(公告)日：2015-12-01

申请号：US14037860

申请日：2013-09-26

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon Chung ,  Ji Ung Kim ,  Ji-Young Kim ,  Byung Won Cho ,  Won Young Chang

IPC: H01B1/08 ,  H01M4/505 ,  C01B35/00 ,  H01M4/36 ,  C01B35/12 ,  H01M4/58

CPC classification number: H01B1/08 ,  C01B35/128 ,  H01M4/364 ,  H01M4/505 ,  H01M4/5825

Abstract: Disclosed is a cathode active material for a lithium ion secondary battery which includes a lithium manganese borate compound and a manganese oxide. The lithium manganese borate compound contains a larger amount of lithium than conventional lithium manganese borate compounds. Therefore, a larger amount of lithium is deintercalated in a battery including the cathode active material, and as a result, the specific capacity of the battery reaches 100-160 mAh/g, which is much higher than that of conventional lithium ion secondary batteries (

Abstract translation: 公开了一种锂离子二次电池用正极活性物质，其包含硼酸锰锂化合物和锰氧化物。 硼酸锰锂化合物含有比常规的硼酸锂化合物更多的锂。 因此，在含有正极活性物质的电池中，脱锂的量越多，电池的比容量达到100〜160mAh / g，比常规的锂离子二次电池高 <80mAh / g）。 还公开了一种用于制造正极活性物质的方法。

公开(公告)号：US10818922B2

公开(公告)日：2020-10-27

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 ,  H01M4/02

Abstract: An anode active material for a sodium ion secondary battery, a sodium ion secondary battery including an anode active material, and an electric device including the sodium ion secondary battery are disclosed. The anode active material for a sodium ion secondary battery includes a cobalt tin spinel oxide represented by Co2.4Sn0.6O4. The sodium ion secondary battery includes an anode made of an anode active material composed of a cobalt tin spinel oxide represented by Chemical Formula 1 below: Co2+xSn1-xO4,  Chemical Formula 1 where x is a real number satisfying 0≤x≤0.9; an electrolyte; and a cathode. The sodium ion secondary battery has high capacity characteristics. The electric device including the sodium ion secondary battery includes an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, and an electric power storage system.

公开(公告)号：US09865866B2

公开(公告)日：2018-01-09

申请号：US13662994

申请日：2012-10-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jaehoon Kim ,  Jong Min Park ,  Kyung Yoon Chung ,  Agung Nugroho ,  Byung Won Cho

IPC: H01M4/36 ,  H01M4/485 ,  H01M4/587 ,  H01M4/62 ,  H01M4/1391 ,  H01M10/052

CPC classification number: H01M4/366 ,  H01M4/1391 ,  H01M4/485 ,  H01M4/587 ,  H01M4/625 ,  H01M10/052

Abstract: Disclosed is a method for carbon coating on lithium titanium oxide-based anode active material nanoparticles. The method includes (a) introducing a lithium precursor solution, a titanium precursor solution and a surface modifier solution into a reactor, and reacting the solutions under supercritical fluid conditions to prepare a solution including nanoparticles of an anode active material represented by Li4Ti5O12, (b) separating the anode active material nanoparticles from the reaction solution, and (c) calcining the anode active material nanoparticles to uniformly coat the surface of the nanoparticles with carbon. Further disclosed are carbon-coated lithium titanium oxide-based anode active material nanoparticles produced by the method. In the anode active material nanoparticles, lithium ions are transferred rapidly. In addition, the uniform carbon coating ensures high electrical conductivity, allowing the anode active material nanoparticles to have excellent electrochemical properties.

公开(公告)号：US11949103B2

公开(公告)日：2024-04-02

申请号：US18091233

申请日：2022-12-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  Dongguk University Industry—Academic Cooperation Foundation

Inventor： Kyung Yoon Chung ,  Kyung-Wan Nam ,  Jaeho Park ,  Daniel Adjah Anang

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/66 ,  H01M10/058

CPC classification number: H01M4/525 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/364 ,  H01M4/667 ,  H01M10/058

Abstract: The present disclosure relates to an anode electrode active material for a secondary battery containing nickel cobalt molybdenum oxide, an anode electrode for a secondary battery including the same, a secondary battery including the anode electrode for a secondary battery, and a method for manufacturing the same. The novel anode electrode material for a sodium secondary battery containing nickel cobalt molybdenum oxide according to the present disclosure allows intercalation/deintercalation reaction of sodium ion during charge/discharge and does not undergo significant volume change during the intercalation reaction because structure is maintained stably during repeated charge/discharge. As a result, electrode damage and electric short circuit are decreased and, thus, improved electrochemical characteristics can be achieved in long-life and high-rate capability.

公开(公告)号：US11837715B2

公开(公告)日：2023-12-05

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 ,  H01M10/054 ,  H01M4/48 ,  H01M4/02

CPC classification number: H01M4/364 ,  H01M4/483 ,  H01M4/582 ,  H01M10/054 ,  H01M2004/028

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：US11329314B2

公开(公告)日：2022-05-10

申请号：US16596659

申请日：2019-10-08

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyoung chul Kim ,  Byung Kook Kim ,  Hun Gi Jung ,  Kyung Yoon Chung ,  Jong Ho Lee ,  Hae Weon Lee ,  Ji Won Son ,  Eu Deum Jung ,  Ji Su Kim ,  Sung Jun Choi

IPC: H01M4/02 ,  H01M10/0562 ,  H01M10/0525 ,  C01B25/14

Abstract: Disclosed are a sulfide-based solid electrolyte imparted with improved lithium ion conductivity and a method of preparing the same. More particularly, disclosed is a sulfide-based solid electrolyte containing a lithium element (Li), a phosphorus element (P), a sulfur element (S) and a halogen element (X), and including a crystal phase of an argyrodite crystal structure, wherein a molar ratio (X/P) of the halogen element (X) to the phosphorus element (P) is higher than 1.