公开(公告)号：US20250125359A1

公开(公告)日：2025-04-17

申请号：US18670457

申请日：2024-05-21

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Minjun KIM ,  Minyoung HONG ,  Hoyong AN ,  Beom Kwon KIM ,  Gurnyoung JO ,  Soochan KIM ,  Hyeseung JUNG

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/133 ,  H01M4/587 ,  H01M10/052

Abstract: Disclosed are a negative active material for a rechargeable lithium battery, a negative electrode including the negative active material, and a rechargeable lithium battery including the same. The negative active material includes crystalline carbon, wherein the crystalline carbon has a Raman spectrum peak intensity ratio (ID/IG) of a peak intensity (ID) of a D peak (about 1360 cm−1 to about 1370 cm−1) relative to a peak intensity (IG) of a G peak (about 1580 cm−1 to about 1590 cm−1) of less than about 0.05.

公开(公告)号：US20250054945A1

公开(公告)日：2025-02-13

申请号：US18641208

申请日：2024-04-19

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Youngkwang CHO ,  Hyunwoo KIM ,  Seung-Hun HAN ,  Beom Kwon KIM ,  Yoonhoi LEE ,  Soochan KIM

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583

Abstract: A rechargeable lithium battery includes a positive electrode including a positive electrode active material layer; and a negative electrode including a negative electrode active material layer, wherein the positive electrode active material layer includes a positive electrode active material and Li5FeO4; and the negative electrode active material layer includes a negative electrode active material including about 10 wt % to about 15 wt % of silicon particles.

公开(公告)号：US20230178721A1

公开(公告)日：2023-06-08

申请号：US17997354

申请日：2021-04-27

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Hyeseung JUNG ,  Jaeho LEE ,  Soochan KIM ,  Chaewoong CHO

IPC: H01M4/485 ,  H01M4/583 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/62

CPC classification number: H01M4/485 ,  H01M4/583 ,  H01M4/386 ,  H01M10/0525 ,  H01M4/625 ,  H01M2004/027

Abstract: The present invention relates to a negative electrode for a lithium secondary battery and a lithium secondary battery comprising same. The negative electrode for a lithium secondary battery comprise: a current collector; and a negative electrode active material layer formed on the current collector and comprising a, negative electrode active material, lithium titanium oxide, and a conductive material, wherein 2 wt % or less of lithium titanium oxide is contained relative to 100 wt % of the negative electrode active material layer.

公开(公告)号：US20250158029A1

公开(公告)日：2025-05-15

申请号：US18671528

申请日：2024-05-22

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Hyeseung JUNG ,  Beom Kwon KIM ,  Soochan KIM ,  Minjun KIM ,  Hoyong AN ,  Minyoung HONG ,  Gurnyoung JO

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/583 ,  H01M10/052

Abstract: Disclosed are a negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. the negative electrode includes a current collector, a negative active material layer including a first active material layer in contact with the current collector and a second active material layer on the first active material layer, wherein at least one active material layer of the first active material layer and the second active material layer includes pores, the pores including macropores having an average size of about 1 μm or more and a porosity of the macropores is about 20% or more based on a total porosity 100% of the negative active material layer.

公开(公告)号：US20250038173A1

公开(公告)日：2025-01-30

申请号：US18505884

申请日：2023-11-09

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Seung-Hun HAN ,  Kyuseo LEE ,  Hyeseung JUNG ,  Hoyong AN ,  Chaewoong CHO ,  Soochan KIM

IPC: H01M4/36 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/485 ,  H01M4/587 ,  H01M4/62

Abstract: A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided, and the negative electrode includes a current collector; a first layer including crystalline carbon; and a second layer including lithium titanium oxide having an aspect ratio of about 10:1 to about 2:1, a Si-based active material, and carbon nanotube, wherein the first layer is positioned between the current collector and the second layer and the second layer is thinner than the first layer.

公开(公告)号：US20240234733A9

公开(公告)日：2024-07-11

申请号：US18491554

申请日：2023-10-20

Applicant: SAMSUNG SDI CO., LTD. ,  IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)

Inventor： Keemin PARK ,  Hyeseung JUNG ,  Hoyong AN ,  Kyuseo LEE ,  Seung-Hun HAN ,  Soochan KIM ,  Chaewoong CHO ,  Seungcheol MYEONG ,  Taeseup SONG ,  Ungyu PAIK

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525

CPC classification number: H01M4/622 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/386 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/027

Abstract: A method of manufacturing an electrode for a rechargeable lithium battery, an electrode manufactured therefrom, and a rechargeable lithium battery including the electrode are provided. The method includes preparing an electrode active material layer slurry including an electrode active material and a polymer binder, coating the electrode active material layer slurry on a current collector and drying it while applying an electric field to form an active material layer, wherein the polymer binder includes a water-soluble binder and an ionic polymer.

公开(公告)号：US20240405212A1

公开(公告)日：2024-12-05

申请号：US18607253

申请日：2024-03-15

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Hyunwoo KIM ,  Youngkwang CHO ,  Seung-Hun HAN ,  Jinhee KIM ,  Soochan KIM

IPC: H01M4/485 ,  H01M4/02 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525

Abstract: A positive electrode composition for a rechargeable lithium battery, a positive electrode including the positive electrode composition, and a rechargeable lithium battery including the positive electrode are disclosed. The positive electrode composition includes a positive electrode active material, a binder, a metal oxide having an oxidation number of 4 or higher, and an organic acid.

公开(公告)号：US20240186519A1

公开(公告)日：2024-06-06

申请号：US18491672

申请日：2023-10-20

Applicant: SAMSUNG SDI CO., LTD. ,  IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)

Inventor： Keemin PARK ,  Hyeseung JUNG ,  Hoyong AN ,  Kyuseo LEE ,  Seung-Hun HAN ,  Soochan KIM ,  Chaewoong CHO ,  Seungcheol MYEONG ,  Taeseup SONG ,  Ungyu PAIK

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/66 ,  H01M10/052

CPC classification number: H01M4/622 ,  H01M4/0404 ,  H01M4/661 ,  H01M10/052 ,  H01M2004/021

Abstract: A current collector for a rechargeable lithium battery includes a substrate and a binder coating layer on a surface of the substrate, wherein the binder coating layer includes a water-soluble binder selected from a rubber-based binder, a polymer resin binder, or a combination thereof.

公开(公告)号：US20240136530A1

公开(公告)日：2024-04-25

申请号：US18491554

申请日：2023-10-19

Applicant: SAMSUNG SDI CO., LTD. ,  IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)

Inventor： Keemin PARK ,  Hyeseung JUNG ,  Hoyong AN ,  Kyuseo LEE ,  Seung-Hun HAN ,  Soochan KIM ,  Chaewoong CHO ,  Seungcheol MYEONG ,  Taeseup SONG ,  Ungyu PAIK

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525

CPC classification number: H01M4/622 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/386 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/027

Abstract: A method of manufacturing an electrode for a rechargeable lithium battery, an electrode manufactured therefrom, and a rechargeable lithium battery including the electrode are provided. The method includes preparing an electrode active material layer slurry including an electrode active material and a polymer binder, coating the electrode active material layer slurry on a current collector and drying it while applying an electric field to form an active material layer, wherein the polymer binder includes a water-soluble binder and an ionic polymer.

公开(公告)号：US20230109733A1

公开(公告)日：2023-04-13

申请号：US17937260

申请日：2022-09-30

Applicant: Samsung SDI Co., Ltd.

Inventor： Jongheon SEOL ,  Minjae KIM ,  Soochan KIM ,  Hyeseung JUNG ,  Chaewoong CHO ,  Minyoung HONG ,  Junghyun NAM ,  Sungsoo HAN

IPC: H01M4/38 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/04

Abstract: Disclosed is a negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the negative electrode includes a current collector and a negative active material layer on the current collector and including a negative active material and a conductive material, the negative active material including a silicon-based active material and the conductive material includes carbon nanotube, wherein the negative active material and the conductive material are included in the negative active material layer in order to satisfy a relationship of Equation 1 and Equation 2. 26