公开(公告)号：US10113980B2

公开(公告)日：2018-10-30

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: H05G1/34 ,  G01N1/44 ,  G01N23/20 ,  G01N23/20025 ,  G01N23/20033 ,  G01N23/20008 ,  G01N23/207

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：US09643846B2

公开(公告)日：2017-05-09

申请号：US13944457

申请日：2013-07-17

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyung Sun Kim ,  Byung Won Cho ,  Hwa Young Lee ,  Eun Jung Shin ,  Soo Kim ,  Kyung Yoon Chung

IPC: H01M4/88 ,  C01B25/45 ,  C01B25/37 ,  H01M10/54 ,  H01M4/58

CPC classification number: C01B25/45 ,  C01B25/375 ,  H01M4/5825 ,  H01M10/54 ,  Y02W30/84

Abstract: The present invention relates to a method for recycling LiFePO4, which is an olivine-based cathode material for a lithium secondary battery. The present invention is characterized in that a cathode material including LiFePO4 is synthesized using, as precursors, amorphous FePO4.XH2O and crystalline FePO4.2H2O (metastrengite) obtained by chemically treating LiFePO4 as an olivine-based cathode material for a lithium secondary battery, which is produced from a waste battery. Since a cathode fabricated from the LiFePO4 cathode material synthesized according to the present invention does not deteriorate the capacity, output characteristics, cycle efficiency and performance of the secondary battery and the cathode material of the lithium secondary battery may be recycled, the secondary battery is economically efficient.

公开(公告)号：US09203114B2

公开(公告)日：2015-12-01

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: H01M6/04 ,  H01M10/26 ,  H01M10/0567 ,  H01M10/054 ,  H01M10/0568

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：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

公开(公告)号：US11575131B2

公开(公告)日：2023-02-07

申请号：US16990025

申请日：2020-08-11

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

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：US10403886B2

公开(公告)日：2019-09-03

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 ,  H01M4/38 ,  H01M4/58 ,  H01M4/587 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/62 ,  H01M10/054 ,  H01M4/02

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：US09199850B2

公开(公告)日：2015-12-01

申请号：US13651765

申请日：2012-10-15

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyung Sun Kim ,  Byung Won Cho ,  Hwa Young Lee ,  Su Jin Kim ,  Eun Jung Shin ,  Kyung Yoon Chung

IPC: C01B25/00 ,  C01B25/37 ,  C01B25/45 ,  H01M4/1397 ,  H01M4/58 ,  H01B1/12 ,  H01M4/02 ,  H01M4/04 ,  H01M4/62

CPC classification number: C01B25/375 ,  C01B25/45 ,  H01M4/0471 ,  H01M4/1397 ,  H01M4/5825 ,  H01M4/625 ,  Y02E60/122

Abstract: The present invention relates to a method for fabricating a LiFePO4 cathode electroactive material for a lithium secondary battery by recycling, and a LiFePO4 cathode electroactive material for a lithium secondary battery, a LiFePO4 cathode, and a lithium secondary battery fabricated thereby. The present invention is characterized in that a cathode scrap is heat treated in air for a cathode electroactive material to be easily dissolved in an acidic solution, and amorphous FePO4 obtained as precipitate is heat treated in an atmosphere of air or hydrogen so as to fabricate crystalline FePO4 or Fe2P2O7. According to the present invention, a cathode scrap may be recycled by using a simple, environmentally friendly, and economical method. Further, a lithium secondary battery fabricated by using a LiFePO4 cathode electroactive material from the cathode scrap is not limited in terms of performance.

Abstract translation: 本发明涉及通过再循环制造用于锂二次电池的LiFePO 4阴极电活性材料的方法，以及用于锂二次电池的LiFePO 4阴极电活性材料，LiFePO 4阴极和由此制造的锂二次电池。 本发明的特征在于，阴极废料在空气中进行热处理，以使阴极电活性物质容易地溶解在酸性溶液中，并将作为沉淀物获得的无定形FePO 4在空气或氢气气氛中进行热处理，以制造结晶 FePO4或Fe2P2O7。 根据本发明，阴极废料可以通过简单，环保且经济的方法再循环。 此外，通过使用来自阴极废料的LiFePO 4阴极电活性材料制造的锂二次电池在性能方面没有限制。