公开(公告)号：US20190229325A1

公开(公告)日：2019-07-25

申请号：US16312972

申请日：2017-07-10

申请人： Samsung SDI Co., Ltd.

发明人： Ji Woo AHN ,  Dongwoo KIM ,  Jaehou NAH ,  Bumjin CHANG ,  Yurim CHA ,  Yeonjoo CHOI ,  Ilyoung CHOI

IPC分类号： H01M4/133 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587

摘要： A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed, and the negative active material includes a primary particle of a crystalline carbon-based material and secondary particle that is an assembly of the primary particles, wherein a ratio of an average particle diameter (D50) of the secondary particle relative to an average particle diameter (D50) of the primary particle (average particle diameter (D50) of the secondary particle/average particle diameter (D50) of the primary particle) ranges from about 1.5 to about 5 and an aspect ratio of the primary particle ranges from about 1 to about 7.

公开(公告)号：US20240282918A1

公开(公告)日：2024-08-22

申请号：US18607894

申请日：2024-03-18

申请人： SAMSUNG SDI CO., LTD.

发明人： Eunjoo LEE ,  Yongseok KIM ,  Jaewon KIM ,  Jaehou NAH ,  KyeuYoon SHEEM

IPC分类号： H01M4/36 ,  H01M4/02 ,  H01M4/38 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525

CPC分类号： H01M4/364 ,  H01M4/366 ,  H01M4/386 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

摘要： A negative active material for a rechargeable lithium battery and a rechargeable lithium battery, the negative active material includes a porous silicon-carbon composite that includes silicon, carbon, and magnesium silicate (MgSiO3), wherein the negative active material has a diffraction peak intensity ratio IMgSiO3(610)/ISi(111) of 0.001

公开(公告)号：US20210151745A1

公开(公告)日：2021-05-20

申请号：US17091181

申请日：2020-11-06

申请人： SAMSUNG SDI CO., LTD. ,  Research & Business Foundation SUNGKYUNKWAN UNIVERSITY

发明人： Changsu SHIN ,  Jaehou NAH ,  Myeong Gyun NAM ,  Pil Jin YOO ,  Gwan Hyun CHOI

IPC分类号： H01M4/36 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/38

摘要： A negative active material for a rechargeable lithium battery and a rechargeable lithium battery, the negative active material including a composite including silicon particles, metal particles, and a first amorphous carbon; and a second amorphous carbon surrounding on the composite.

公开(公告)号：US20190312264A1

公开(公告)日：2019-10-10

申请号：US16374923

申请日：2019-04-04

申请人： SAMSUNG SDI CO., LTD.

发明人： Changsu SHIN ,  Yongseok KIM ,  Jaehou NAH

IPC分类号： H01M4/36 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/587

摘要： A negative active material and a rechargeable lithium battery, the negative active material including a silicon-carbon composite, the silicon-carbon composite including crystalline carbon; amorphous carbon; and silicon nanoparticles having a needle shape, a flake shape, a sheet shape, or a combination thereof, wherein the silicon nanoparticles have a D50 particle diameter of 5 nm to 150 nm and an aspect ratio of 4 to 10.

公开(公告)号：US20190140262A1

公开(公告)日：2019-05-09

申请号：US16180617

申请日：2018-11-05

申请人： SAMSUNG SDI CO., LTD.

发明人： Yongseok KIM ,  Jaehou NAH ,  Yeonjoo CHOI

IPC分类号： H01M4/36 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525

摘要： A negative active material for a rechargeable lithium battery includes a silicon-carbon composite including crystalline carbon and a silicon particle. The silicon-carbon composite further includes an alkali metal or an alkaline-earth metal. The alkali metal or the alkaline-earth metal is present in the silicon-carbon composite in an amount of greater than or equal to about 500 ppm and less than about 5,000 ppm by weight.

公开(公告)号：US20240363860A1

公开(公告)日：2024-10-31

申请号：US18757717

申请日：2024-06-28

申请人： Samsung SDI Co., Ltd.

发明人： Changsu SHIN ,  Youngugk KIM ,  Jongmin WON ,  Sunil PARK ,  Jaehou NAH ,  Young-Min KIM ,  Eunji KANG

IPC分类号： H01M4/583 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/38 ,  H01M10/052 ,  H01M10/44

CPC分类号： H01M4/583 ,  H01M4/0404 ,  H01M4/366 ,  H01M4/386 ,  H01M10/052 ,  H01M10/44 ,  H01M2004/021 ,  H01M2004/027

摘要： A negative active material, including an inorganic supporter having pores which are filled with silicon, additional silicon located on a surface of the inorganic supporter, and a carbon coating layer on the surface of the inorganic supporter and a surface of the additional silicon located on the surface of the inorganic supporter.

公开(公告)号：US20240234689A1

公开(公告)日：2024-07-11

申请号：US18380335

申请日：2023-10-16

申请人： SAMSUNG SDI CO., LTD.

发明人： Doori OH ,  Changsu SHIN ,  Young-Min KIM ,  Sunil PARK ,  Eunji KANG ,  Jongmin WON ,  Yookyung KIM ,  Jaehou NAH ,  Youngugk KIM

IPC分类号： H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  H01M4/583 ,  H01M10/052

CPC分类号： H01M4/364 ,  H01M4/366 ,  H01M4/386 ,  H01M4/483 ,  H01M4/583 ,  H01M10/052 ,  H01M2004/027

摘要： A negative active material for a rechargeable lithium battery, the negative active material including, a silicon-carbon composite including silicon and amorphous carbon, and a coating layer positioned on a surface of the silicon-carbon composite the coating layer including a metal hydroxide, and an amount of the coating layer is about 1 wt % to about 10 wt % based on about 100 wt % of the negative active material.

公开(公告)号：US20240213457A1

公开(公告)日：2024-06-27

申请号：US18535191

申请日：2023-12-11

申请人： SAMSUNG SDI CO., LTD.

发明人： Jaewon KIM ,  Yongseok KIM ,  Jaehou NAH ,  Youngugk KIM ,  Heeyoung CHU ,  Dae-Hyeok LEE ,  Hyejin KIM ,  Sojeong YU

IPC分类号： H01M4/36 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/587 ,  H01M10/052

CPC分类号： H01M4/366 ,  H01M4/133 ,  H01M4/134 ,  H01M4/386 ,  H01M4/587 ,  H01M10/052 ,  H01M2004/027

摘要： Disclosed are a negative active material for a rechargeable lithium battery and a rechargeable lithium battery. The negative active material for a rechargeable lithium battery includes a silicon-carbon composite; and graphene on a surface of the silicon-carbon composite, wherein a specific surface area of the negative active material is about 1.6 m2/g to about 2 m2/g.

公开(公告)号：US20240170656A1

公开(公告)日：2024-05-23

申请号：US18385018

申请日：2023-10-30

申请人： SAMSUNG SDI CO., LTD.

发明人： Hyejin KIM ,  Yongseok KIM ,  Sojeong YU ,  Kyeu Yoon SHEEM ,  Jungjoon KIM ,  Jaewon KIM ,  Jaehou NAH ,  Eunjoo LEE

IPC分类号： H01M4/38 ,  H01M4/46 ,  H01M4/485 ,  H01M4/583

CPC分类号： H01M4/386 ,  H01M4/466 ,  H01M4/485 ,  H01M4/583 ,  H01M2004/027

摘要： A negative active material for a rechargeable lithium battery, having a core including porous silicon and about 1 wt % to about 12 wt % based on 100 wt % of a total weight of the negative active material of magnesium and a carbon layer on a surface of the core, to more effectively inhibit the expansion of the negative electrode and thereby more effectively inhibit the expansion of the secondary battery.

公开(公告)号：US20240120466A1

公开(公告)日：2024-04-11

申请号：US18012458

申请日：2021-10-27

申请人： SAMSUNG SDI CO., LTD.

发明人： Changsu SHIN ,  Jongmin KIM ,  Jongmin WON ,  Youngugk KIM ,  Jaemyung KIM ,  Jaehou NAH ,  Dae-Hyeok LEE ,  Jungho LEE

IPC分类号： H01M4/36 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/38 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525

CPC分类号： H01M4/366 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/386 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/027

摘要： Provided is that a negative active material for a rechargeable lithium battery, a negative electrode for a rechargeable lithium battery including the same, and a rechargeable lithium including the same, and the negative active material for a rechargeable lithium battery includes an agglomerated product of silicon-based materials comprising a silicon particle, a lithium silicate positioned on a surface of the silicon particle, a first amorphous carbon surrounded on the silicon particle and the lithium silicate; and a second amorphous carbon positioned on the agglomerated product.