公开(公告)号：US20240243434A1

公开(公告)日：2024-07-18

申请号：US18013583

申请日：2022-02-22

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Hana KIM ,  Byungmin LEE ,  Minho CHO

IPC: H01M50/446 ,  H01M50/403 ,  H01M50/42 ,  H01M50/443

CPC classification number: H01M50/446 ,  H01M50/403 ,  H01M50/42 ,  H01M50/443

Abstract: Provided are a composition for coating a separator, a method of preparing a separator by using the same, a separator, and a lithium battery employing the separator. The composition for coating a separator includes: a polyacrylamide-based copolymer including a cross-linking reactive group; inorganic particles; and water, and the cross-linking reactive group includes at least two functional groups cross-linkable with each other. The composition for coating a separator may be used as a one-component type without a crosslinker, and a separator having high thermal resistance characteristics may be prepared by using the composition.

公开(公告)号：US12034180B1

公开(公告)日：2024-07-09

申请号：US16243877

申请日：2019-01-09

Applicant: Oceanit Laboratories, Inc.

Inventor： Venkat Kamavaram ,  Ganesh Kumar Arumugam ,  Sumil Singh Thapa

IPC: H01M50/403 ,  H01M10/0525 ,  H01M50/414 ,  H01M50/42 ,  H01M50/423 ,  H01M50/44 ,  H01M50/454

CPC classification number: H01M50/44 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/414 ,  H01M50/42 ,  H01M50/423 ,  H01M50/454

Abstract: The invention relates to nanostructured hybrid polymer composite membranes and methods for producing same. Specifically, the invention relates to nanofiber membranes produced through various methods, including electrospinning of at least one polymer into a non-woven nanofiber structure. The disclosed nanofiber membranes may also be compressed to further provide unique physical, chemical, and thermal properties that make such membranes suitable for a range of specific applications, including, but not limited to, use as nanostructured separators in lithium-ion batteries.

公开(公告)号：US20240222795A1

公开(公告)日：2024-07-04

申请号：US18592536

申请日：2024-03-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi Hong ,  Lei Li ,  Xiaonan Cheng ,  Jianrui Yang ,  Peng Wang ,  Yi Zheng ,  Chengdong Sun

IPC: H01M50/451 ,  H01M50/42 ,  H01M50/426 ,  H01M50/46

CPC classification number: H01M50/451 ,  H01M50/42 ,  H01M50/426 ,  H01M50/46

Abstract: This application relates to the field of battery technologies, and in particular, to a binder and a preparation method thereof, and a separator, electrode assembly, battery cell, battery, and electric apparatus containing such binder. The binder includes a core layer structure and a shell layer structure provided on surface of the core layer structure, where the core layer structure includes a polyvinylidene fluoride polymer, and the shell layer structure includes a polyacrylate polymer. Polyvinylidene fluoride is a homopolymer with a crystallinity of about 50%, resulting in insufficient adhesion force. Therefore, in this application, the polyacrylate polymer is used to encapsulate the polyvinylidene fluoride polymer to obtain a core-shell-structured binder, so that the crystallinity of the polyvinylidene fluoride polymer in the core-shell-structured binder is improved, and adhesion performance of the core-shell-structured binder is improved, thereby increasing adhesion force between a separator and an electrode plate via the binder.

公开(公告)号：US20240222788A1

公开(公告)日：2024-07-04

申请号：US18557989

申请日：2022-03-23

Applicant: artience Co., Ltd. ,  TOYOCHEM CO., LTD.

Inventor： Akiko IMAZATO ,  Yoshiyuki SAKAI ,  Takaaki KOIKE ,  Airei CHOU ,  Daisuke FUJIKAWA

IPC: H01M50/42 ,  C08F220/28 ,  C08F220/56 ,  C09D7/45 ,  C09D133/14 ,  C09D133/26 ,  H01M50/449

CPC classification number: H01M50/42 ,  C08F220/281 ,  C08F220/56 ,  C09D7/45 ,  C09D133/14 ,  C09D133/26 ,  H01M50/449 ,  C08F2800/20

Abstract: A binder dispersion having excellent electrolytic solution resistance, a slurry composition having excellent solution stability and coatability, a separator being low in water content and having excellent heat resistance and adhesion to a separator substrate, and a non-aqueous secondary battery having low internal resistance and good cycle characteristics. An object thereof is to be attained by using a binder dispersion for a non-aqueous secondary battery separator, the binder dispersion including a polymer and an aqueous medium, in which the polymer has an acid value of 15 mgKOH/g or less and is an ethylenically unsaturated monomer mixture containing (meth)acrylamide and a nonionic ethylenically unsaturated monomer with a specific value for an octanol/water partition coefficient logarithm (Log Kow) at 25° C., and light transmittance at a wavelength of 400 nm is less than 70% under a condition of a solid concentration of 5% by mass.

公开(公告)号：US12021183B2

公开(公告)日：2024-06-25

申请号：US17576010

申请日：2022-01-14

Applicant: Ningde Amperex Technology Limited

Inventor： DongYang Guo

IPC: H01M10/05 ,  H01M10/0525 ,  H01M50/417 ,  H01M50/42 ,  H01M50/423 ,  H01M50/426 ,  H01M50/429 ,  H01M50/451 ,  H01M50/454 ,  H01M50/489

CPC classification number: H01M10/0525 ,  H01M50/417 ,  H01M50/42 ,  H01M50/423 ,  H01M50/426 ,  H01M50/429 ,  H01M50/451 ,  H01M50/454 ,  H01M50/489

Abstract: An electrochemical device includes a cathode, an anode and a separator, the separator being disposed between the cathode and the anode, the separator including a porous substrate and a porous layer, and the porous layer being disposed on a surface of the porous substrate and including inorganic particles and a binder, where a ratio of a puncture elongation of the porous substrate to a puncture force of the porous substrate is about 1.5 mm/N to about 25 mm/N. A lithium-ion battery including the separator, provided by the present application, improves the safety performance of the lithium-ion battery.

公开(公告)号：US12002987B2

公开(公告)日：2024-06-04

申请号：US17055507

申请日：2019-03-27

Applicant: Samsung SDI Co., Ltd. ,  SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minho Cho ,  Hana Kim ,  Myungkook Park ,  Seung Rim Yang ,  Byungmin Lee ,  Jungsue Jang ,  Bokyung Jung

IPC: H01M50/417 ,  H01M4/62 ,  H01M10/0525 ,  H01M50/409 ,  H01M50/42 ,  H01M50/434 ,  H01M50/443 ,  H01M50/446 ,  H01M50/457 ,  H01M50/46 ,  H01M50/489

CPC classification number: H01M50/417 ,  H01M4/622 ,  H01M10/0525 ,  H01M50/409 ,  H01M50/42 ,  H01M50/434 ,  H01M50/443 ,  H01M50/446 ,  H01M50/457 ,  H01M50/461 ,  H01M50/489

Abstract: The present disclosure provides a separator for a rechargeable lithium battery and a rechargeable lithium battery including same, the separator includes a porous substrate; and an adhesive layer formed on the porous substrate. The adhesive layer includes a particle-type binder having a core-shell structure including a core and a shell surrounding the core, the core includes a first polymer having a glass transition temperature of less than or equal to 30° C., the shell includes a second polymer having a glass transition temperature of greater than or equal to 40° C., and the particle-type binder has a diameter of 50 nm to 500 nm.

公开(公告)号：US20240136659A1

公开(公告)日：2024-04-25

申请号：US18277546

申请日：2022-02-04

Applicant: Celgard, LLC

Inventor： Wenbin Yin ,  Zhengming Zhang ,  Stefan Reinartz ,  Takeda Hisashi ,  Xiang Yu

IPC: H01M50/446 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/417 ,  H01M50/42 ,  H01M50/426 ,  H01M50/434 ,  H01M50/489

CPC classification number: H01M50/446 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/417 ,  H01M50/42 ,  H01M50/426 ,  H01M50/434 ,  H01M50/489 ,  H01G9/02

Abstract: A heat-resistant sticky coating for use on a membrane or lithium ion battery separator is disclosed. The coating has at least improved dry adhesion to an electrode for a lithium ion battery. The coating includes heat-resistant particles with a water-soluble sticky polymer on their surface. The water-soluble sticky polymer may be a polyethylene oxide (PEO). The coating may also include particles of water-insoluble sticky polymer. The water-insoluble sticky polymer may be a polyvinylidene fluoride (PVDF) homopolymer, copolymer, or terpolymer. The water-insoluble sticky polymer may be in the same layer of the coating as the heat-resistant particles with the water-soluble sticky polymer on their surface, or it may be in a different layer. A method for forming the heat-resistant sticky coating is also disclosed.

公开(公告)号：US20240120615A1

公开(公告)日：2024-04-11

申请号：US18502978

申请日：2023-11-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyang KANG ,  Lei LI ,  Yi ZHENG ,  Chengdong SUN ,  Shaohua AI

IPC: H01M50/446 ,  C08F220/14 ,  C08F220/18 ,  C08F220/28 ,  C08K9/06 ,  H01M50/42 ,  H01M50/423 ,  H01M50/434 ,  H01M50/443 ,  H01M50/451

CPC classification number: H01M50/446 ,  C08F220/14 ,  C08F220/1802 ,  C08F220/1804 ,  C08F220/1806 ,  C08F220/1811 ,  C08F220/281 ,  C08K9/06 ,  H01M50/42 ,  H01M50/423 ,  H01M50/434 ,  H01M50/443 ,  H01M50/451 ,  C08F2800/10

Abstract: A binder includes a polymer and ceramic particles modified with silane coupling agent. The polymer contains structural units derived from a first-type monomer, a second-type monomer, and a third-type monomer, and a molar ratio of the first-type monomer, the second-type monomer, and the third-type monomer is (50 to 58):(40 to 44):(2 to 6). The first-type monomer is selected from one or more compounds of formula I, the second-type monomer is selected from one or more compounds of formula II, and the third-type monomer is selected from one or more compounds of formula III.

公开(公告)号：US11923496B2

公开(公告)日：2024-03-05

申请号：US16807479

申请日：2020-03-03

Applicant: SAMSUNG SDI CO., LTD. ,  SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jungsue Jang ,  Minho Cho ,  Hana Kim ,  Myungkook Park ,  Seung Rim Yang ,  Byungmin Lee ,  Bokyung Jung ,  Rae Sung Kim

IPC: H01M50/446 ,  H01M10/052 ,  H01M50/414 ,  H01M50/42 ,  H01M50/451 ,  H01M50/417

CPC classification number: H01M10/052 ,  H01M50/414 ,  H01M50/42 ,  H01M50/446 ,  H01M50/451 ,  H01M50/417

Abstract: A separator for a rechargeable lithium battery and a rechargeable lithium battery, the separator including a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a binder and inorganic particles, the binder including a polyurethane and a polyvinyl alcohol, and the polyurethane and the polyvinyl alcohol are included in a weight ratio of about 5:5 to about 9:1.

公开(公告)号：US20240034023A1

公开(公告)日：2024-02-01

申请号：US18377801

申请日：2023-10-08

Applicant: Celgard, LLC

Inventor： Lie Shi ,  Christopher L. Cowger ,  Heba K. Botros

IPC: B32B3/26 ,  B32B5/02 ,  B32B27/12 ,  B32B27/30 ,  B32B27/40 ,  B32B5/08 ,  B32B27/20 ,  B32B27/32 ,  B32B7/04 ,  H01M50/44 ,  H01M50/403 ,  H01M50/423 ,  H01M50/417 ,  H01M50/489 ,  H01M50/491 ,  H01M50/42 ,  H01M50/426 ,  H01M50/454 ,  H01M50/414 ,  H01M50/451 ,  H01M50/457

CPC classification number: B32B3/26 ,  B32B5/022 ,  B32B27/12 ,  B32B27/302 ,  B32B27/308 ,  B32B27/40 ,  B32B5/08 ,  B32B27/205 ,  B32B27/304 ,  B32B27/32 ,  B32B7/04 ,  H01M50/44 ,  H01M50/403 ,  H01M50/423 ,  H01M50/417 ,  H01M50/489 ,  H01M50/491 ,  H01M50/42 ,  H01M50/426 ,  H01M50/454 ,  H01M50/414 ,  H01M50/451 ,  H01M50/457 ,  B32B2250/24 ,  B32B2255/02 ,  B32B2262/0276 ,  B32B2262/12 ,  B32B2307/206 ,  B32B2457/10 ,  H01M10/052

Abstract: Battery separators and methods are disclosed. The battery separator may be used in a lithium battery. The separator may include a microporous membrane laminated to a coated nonwoven. The coating may contain a polymer and optionally, a filler or particles. The methods may include the steps of: unwinding the microporous membrane and the nonwoven, laminating the nonwoven and microporous membrane, and coating the nonwoven before or after lamination.