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：US20170212062A1

公开(公告)日：2017-07-27

申请号：US15099678

申请日：2016-04-15

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon CHUNG ,  Dong Hyun KIM ,  Susanto DIEKY ,  Yeojo YOON ,  Byung Won CHO ,  Si Hyoung OH ,  Won Young CHANG

IPC: G01N23/20 ,  G01N23/207

CPC classification number: G01N23/20025 ,  G01N1/44 ,  G01N23/20008 ,  G01N23/20033 ,  G01N23/207 ,  G01N2223/309 ,  G01N2223/3106 ,  H05G1/34

Abstract: Provided is a furnace for a transmission mode X-ray diffractometer and a transmission mode X-ray diffractometer using the same. The furnace for a transmission mode X-ray diffractometer includes a sample heating unit disposed adjacent to a quartz capillary accommodating a sample to heat the sample, and a main body disposed to surround the quartz capillary and the sample heating unit and having an insulating function for allowing the heated sample to maintain a thermal equilibrium state.

公开(公告)号：US20160028117A1

公开(公告)日：2016-01-28

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: H01M10/0567 ,  H01M10/0568 ,  H01M10/054

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：US20130299735A1

公开(公告)日：2013-11-14

申请号：US13853141

申请日：2013-03-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon CHUNG ,  Byung Won CHO ,  Won Young CHANG ,  Jae Hyung CHO ,  Jae-kyo NOH ,  Soo KIM ,  Sujin KIM

IPC: H01M4/04

CPC classification number: H01M4/0497 ,  B82Y30/00 ,  C01G45/125 ,  C01G53/50 ,  C01P2002/52 ,  C01P2002/85 ,  C01P2004/04 ,  C01P2004/64 ,  C01P2004/84 ,  H01M4/0471 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525

Abstract: Disclosed is a method of producing a nanocomposite cathode active material for a lithium secondary battery, represented by the following formula: xLi2MnO3—(1−x)LiMO2 wherein M is Nia—Mnb—Coc, x is a decimal number from 0.1 to 0.9, and a, b and c are independently a decimal number from 0.05 to 0.9. The method includes mixing a lithium compound with a manganese compound to prepare Li2MnO3 as a first cathode active material, mixing a mixed solution of nickel sulfate/manganese sulfate/cobalt sulfate, a sodium hydroxide solution and aqueous ammonia to prepare a coprecipitated hydroxide represented by (Nia—Mnb—Coc)(OH)2 wherein a, b and c are as defined above, mixing the coprecipitated hydroxide with a lithium compound to prepare a second cathode active material represented by LiMO2 wherein M is as defined above, and mixing the first cathode active material with the second cathode active material. The nanocomposite cathode active material has improved electrochemical properties, such as stability, electrode capacity and cycle life in the high-voltage region.

Abstract translation: 公开了一种制备用于锂二次电池的纳米复合阴极活性材料的方法，由下式表示：xLi2MnO3-（1-x）LiMO2其中M是Nia-Mnb-Coc，x是0.1至0.9的十进制数， 和a，b和c独立地为0.05至0.9的十进制数。 该方法包括将锂化合物与锰化合物混合以制备Li2MnO3作为第一正极活性物质，混合硫酸镍/硫酸锰/硫酸钴，氢氧化钠溶液和氨水的混合溶液，制备由（ Nia-Mnb-Coc）（OH）2，其中a，b和c如上所定义，将共沉淀的氢氧化物与锂化合物混合以制备由LiMO2表示的第二正极活性物质，其中M如上所定义， 阴极活性材料与第二阴极活性材料。 纳米复合阴极活性材料具有改善的电化学性能，例如高压区域的稳定性，电极容量和循环寿命。

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：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：US20140099552A1

公开(公告)日：2014-04-10

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: H01M4/505

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：US20180138502A1

公开(公告)日：2018-05-17

申请号：US15486201

申请日：2017-04-12

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Si Hyoung OH ,  Byung Won CHO ,  Won Young CHANG ,  Jung Hoon HA ,  Boeun LEE ,  Hyo Ree SEO

IPC: H01M4/36 ,  H01M10/054 ,  H01M4/58 ,  H01M4/62 ,  H01M4/38 ,  H01M10/0569 ,  H01M10/0568

CPC classification number: H01M4/364 ,  H01M4/13 ,  H01M4/381 ,  H01M4/5815 ,  H01M4/623 ,  H01M4/625 ,  H01M10/054 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028

Abstract: Provided is a cathode material for a rechargeable magnesium battery, represented by the chemical formula of Ag2SxSe1-x (0≤x≤1), a highly stable cathode material and a rechargeable magnesium battery including the same. The cathode material for a rechargeable magnesium battery has a higher discharge capacity and higher discharge voltage as compared to a typical commercially available cathode material, Chevrel phase, and shows excellent stability in an electrolyte for a rechargeable magnesium battery including chloride ions. In addition, after evaluating the cycle life of the cathode material, the cathode material shows an excellent discharge capacity per unit weight after 500 charge/discharge cycles, and thus is useful for a cathode material for a rechargeable magnesium battery.

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。