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：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