公开(公告)号：US20240339602A1

公开(公告)日：2024-10-10

申请号：US18207267

申请日：2023-06-08

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Si Hyoung OH ,  Jinyeon HWANG ,  Minah LEE ,  Woo Joo NO ,  Kyung Yoon CHUNG

IPC: H01M4/46 ,  C07F9/09 ,  H01M4/04 ,  H01M10/054 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/44

CPC classification number: H01M4/466 ,  C07F9/09 ,  H01M4/0416 ,  H01M10/054 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/44

Abstract: Exemplary embodiments of the present invention may provide a magnesium electrode including an electrode plate including magnesium and a protective layer located on at least a part of a surface of the electrode plate, in which the protective layer includes a phosphoric acid alkyl ester compound.

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：US20230146801A1

公开(公告)日：2023-05-11

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 ,  H01M4/131 ,  H01M4/1391 ,  H01M10/058 ,  H01M4/36 ,  H01M4/66 ,  H01M4/04

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

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：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：US20140361216A1

公开(公告)日：2014-12-11

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: H01M4/36

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：US20140349177A1

公开(公告)日：2014-11-27

申请号：US14016549

申请日：2013-09-03

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon CHUNG ,  Byung Won CHO ,  Joong Kee LEE ,  Hyung Sun KIM ,  Jae Hyun CHO ,  Won Young CHANG ,  Hwa Young LEE

IPC: H01M10/0568 ,  H01M10/058 ,  H01M4/58 ,  H01M10/054 ,  H01M10/052

CPC classification number: H01M10/0568 ,  H01M4/381 ,  H01M4/466 ,  H01M10/052 ,  H01M10/054 ,  H01M10/058 ,  H01M2300/0025 ,  Y10T29/49108

Abstract: The present disclosure relates to a magnesium hybrid battery and a method for fabricating same. The magnesium hybrid battery according to the present disclosure, which includes magnesium or magnesium alloy metal as an anode, a cathode including a cathode active material wherein not only magnesium ion but also one or more ion selected from lithium ion and sodium ion can be intercalated and deintercalated and an electrolyte including magnesium ion and further including one or more ion selected from lithium ion and sodium, can overcome the limitation of the existing magnesium secondary battery and provide improved battery capacity, output characteristics, cycle life, safety, etc.

Abstract translation: 本发明涉及镁混合电池及其制造方法。 根据本公开的镁混合电池，其包括镁或镁合金金属作为阳极，阴极包括正极活性材料，其中不仅可以插入镁离子而且还可以插入一种或多种选自锂离子和钠离子的离子， 脱嵌和包含镁离子的电解质，并且还包括一种或多种选自锂离子和钠的离子，可以克服现有镁二次电池的限制，并提供改进的电池容量，输出特性，循环寿命，安全性等。

公开(公告)号：US20140141324A1

公开(公告)日：2014-05-22

申请号：US13870439

申请日：2013-04-25

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon CHUNG ,  Byung Won CHO ,  Joong Kee LEE ,  Jae Hyun CHO ,  Sang Hoon LEE ,  Won Young CHANG

IPC: H01M10/0567 ,  H01M10/054

CPC classification number: H01M10/0567 ,  H01M10/054 ,  H01M10/0568

Abstract: Provided are an electrolyte for a magnesium secondary battery having improved ion conductivity and stability, and a method for preparing the same. The electrolyte for a magnesium secondary battery shows higher ion conductivity as compared to the electrolyte according to the related art, increases the dissociation degree of a magnesium halide electrolyte salt, and provides stable electrochemical characteristics. In addition, after determining the capacity, output characteristics and cycle life of the magnesium secondary battery including the electrolyte, the battery provides significantly higher discharge capacity after 100 cycles, as compared to the electrolyte according to the related art. Therefore, the electrolyte may be useful for an electrolyte solution of a magnesium secondary battery.

Abstract translation: 提供一种具有改善的离子传导性和稳定性的用于镁二次电池的电解质及其制备方法。 与现有技术的电解液相比，镁二次电池用电解液的离子传导性高，卤化镁电解质盐的解离度提高，电化学性能稳定。 此外，在确定包括电解质的镁二次电池的容量，输出特性和循环寿命之后，与根据现有技术的电解液相比，电池在100次循环后提供显着更高的放电容量。 因此，电解质可用于镁二次电池的电解液。

公开(公告)号：US20240421372A1

公开(公告)日：2024-12-19

申请号：US18403060

申请日：2024-01-03

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Min Ah LEE ,  Ji Hyun HONG ,  Hun Gi JUNG ,  Jin Kwan CHOI ,  Kyung Yoon CHUNG ,  Ui Chan HWANG

IPC: H01M10/54 ,  H01M4/02 ,  H01M4/04

Abstract: Provided are a regeneration solution of a spent secondary battery cathode material, the regeneration solution including p-type redox molecules, a solvent, and a lithium salt, in which the p-type redox molecules have a reduction potential that is higher than or equal to 1.55 volt (V) and lower than or equal to 3.7 V with respect to a reduction potential (vs Li/Li+) of lithium, a method of regenerating a cathode material and a regenerated cathode material using this, and a method of recycling the regeneration solution.

公开(公告)号：US20220102721A1

公开(公告)日：2022-03-31

申请号：US17217413

申请日：2021-03-30

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Minah LEE ,  Jihyun HONG ,  Kyung Yoon CHUNG ,  Jin Kwan CHOI ,  Ju Young JANG

IPC: H01M4/583 ,  H01M10/0525 ,  H01M4/38 ,  H01M10/0569 ,  H01M10/0568 ,  H01M4/525 ,  H01M4/505 ,  H01M4/62 ,  H01M4/04

Abstract: The present disclosure provides a prelithiation solution for a graphite or graphite/silicon composite anode, which includes: (a) a cyclic or linear ether-based solvent; and (b) an aromatic hydrocarbon-lithium complex, and has a reduction potential of 0.25 V (vs Li/Li+) or lower.
According to the present disclosure, lithium ions can be chemically intercalated uniformly throughout a graphite or graphite composite anode in solution phase and a high level of prelithiation may be achieved. In addition, an anode having an initial coulombic efficiency close to 100% may be provided by prelithiating a graphite or graphite composite anode using the prelithiation solution and a commercially applicable lithium secondary battery exhibiting high energy density may be provided based thereon.

公开(公告)号：US20170187032A1

公开(公告)日：2017-06-29

申请号：US15149520

申请日：2016-05-09

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Won Young CHANG ,  Byung Won CHO ,  Kyung Yoon CHUNG ,  Si Hyoung OH ,  Young Sun SHIN ,  Sooyeon HWANG ,  Yoon Bong OH

IPC: H01M4/134 ,  H01M4/62 ,  H01M4/1395 ,  H01M10/0568 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2/16 ,  H01M10/0569 ,  H01M4/38 ,  H01M4/04

CPC classification number: H01M4/134 ,  H01M4/0471 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/386 ,  H01M4/62 ,  H01M4/625 ,  H01M10/052

Abstract: Disclosed is a silicon-based anode active material for a lithium secondary battery. The silicon-based anode active material imparts high capacity and high power to the lithium secondary battery, can be used for a long time, and has good thermal stability. Also disclosed is a method for preparing the silicon-based anode active material. The method includes (A) binding metal oxide particles to the entire surface of silicon particles or portions thereof to form a silicon-metal oxide composite, (B) coating the surface of the silicon-metal oxide composite with a polymeric material to form a silicon-metal oxide-polymeric material composite, and (C) heat treating the silicon-metal oxide-polymeric material composite under an inert gas atmosphere to convert the coated polymeric material layer into a carbon coating layer.