公开(公告)号：US20200176778A1

公开(公告)日：2020-06-04

申请号：US16629563

申请日：2018-07-05

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI ,  Norikazu YAMAMOTO ,  Kenji KUROYANAGI

IPC: H01M4/62 ,  H01M10/0583

Abstract: Provided is a laminate for a non-aqueous secondary battery including a substrate and a functional layer that is well adhered thereto. The laminate includes a substrate and a functional layer at one or both sides of the substrate. The functional layer contains non-conductive particles and a binder including a polymer A that includes a fluorine-containing monomer unit. The amount of polymer A in a region up to 20% of thickness of the functional layer from a substrate-side surface thereof is more than 20% and not more than 40% of the total amount of polymer A in the functional layer, and the amount of polymer A in a region up to 20% of thickness of the functional layer from an opposite surface thereof relative to the substrate-side surface is more than 20% and not more than 40% of the total amount of polymer A in the functional layer.

公开(公告)号：US20190157678A1

公开(公告)日：2019-05-23

申请号：US16308549

申请日：2017-06-21

Applicant: ZEON CORPORATION

Inventor： Norikazu YAMAMOTO ,  Naoki TAKAHASHI

IPC: H01M4/62 ,  H01M4/1391 ,  H01M4/04

Abstract: Provided is a binder composition for a non-aqueous secondary battery electrode that can form an electrode having excellent bending resistance and can ensure good electrolyte solution injectability in secondary battery production. The binder composition for a non-aqueous secondary battery electrode contains a polymer A. The polymer A includes an aliphatic conjugated diene monomer unit in a proportion of at least 86 mass % and not more than 95 mass %.

公开(公告)号：US20180151866A1

公开(公告)日：2018-05-31

申请号：US15574836

申请日：2016-05-13

Applicant: ZEON CORPORATION

Inventor： Norikazu YAMAMOTO ,  Shigeru SHUTO ,  Julien DELMAS

IPC: H01M4/133 ,  H01M4/62 ,  H01M10/0525

Abstract: Provided is a slurry composition for a secondary battery negative electrode that has excellent producibility and can suppress cell swelling and an increase in internal resistance in a secondary battery. The slurry composition for a secondary battery negative electrode contains a negative electrode active material, a particulate polymer, and water. The negative electrode active material includes a carbon-based negative electrode active material having a surface functional group content of at least 0.9% and not more than 1.5%, and a BET specific surface area of 2.5 m2/g or less. The particulate polymer has a surface acid content of at least 0.2 mmol/g and not more than 2.0 mmol/g.

公开(公告)号：US20250087695A1

公开(公告)日：2025-03-13

申请号：US18685229

申请日：2022-09-12

Applicant: ZEON CORPORATION

Inventor： Norikazu YAMAMOTO ,  Hiroki OSHIMA

IPC: H01M4/62 ,  C08F236/08 ,  H01M4/02 ,  H01M4/13 ,  H01M10/42

Abstract: Provided is a conductive material paste for a non-aqueous secondary battery with which it is possible to form an electrode that has suppressed dusting and that can cause a non-aqueous secondary battery to display excellent cycle characteristics. The conductive material paste contains carbon nanotubes, a dispersant, and water. The dispersant includes a water-soluble polymer including a conjugated diene monomer unit and a carboxy group-containing monomer unit.

公开(公告)号：US20200152985A1

公开(公告)日：2020-05-14

申请号：US16492830

申请日：2018-03-05

Applicant: ZEON CORPORATION

Inventor： Norikazu YAMAMOTO ,  Hidetake ISHII ,  Yusaku MATSUO

IPC: H01M4/62 ,  H01M4/36 ,  H01M4/13 ,  H01M4/04 ,  H01M2/16 ,  C08L47/00 ,  H01M2/14

Abstract: A binder composition for a non-aqueous secondary battery including: a water-insoluble polymer and a water-soluble polymer, wherein the water-insoluble polymer contains 70% by weight or more and 100% by weight or less of an aliphatic conjugated diene monomer unit, and the water-soluble polymer has a carboxy group and a hydroxy group. The water-soluble polymer preferably contains a carboxy group-containing monomer unit and a hydroxy group-containing monomer unit. Also provided are a slurry composition for a non-aqueous secondary battery, including the binder composition, an electrode, a separator, a secondary battery and methods for producing the same.

公开(公告)号：US20180261845A1

公开(公告)日：2018-09-13

申请号：US15762241

申请日：2016-09-27

Applicant: ZEON CORPORATION

Inventor： Norikazu YAMAMOTO ,  Hiroshi KOBAYASHI ,  Julien DELMAS ,  Kayoko TAKIZAWA

IPC: H01M4/62 ,  H01M4/139 ,  H01M10/0525

Abstract: Provided is a binder composition for a non-aqueous secondary battery electrode capable of forming an electrode for a non-aqueous secondary battery that has excellent peel strength and can cause a non-aqueous secondary battery to display excellent cycle characteristics. The binder composition for a non-aqueous secondary battery electrode contains: a first particulate polymer including an aliphatic conjugated diene monomer unit in a proportion of more than 90 mass % and having a volume average particle diameter of at least 0.6 μm and not more than 2.5 μm; and a second particulate polymer including an aliphatic conjugated diene monomer unit in a proportion of at least 20 mass % and not more than 60 mass % and having a volume average particle diameter of at least 0.01 μm and not more than 0.5 μm.

公开(公告)号：US20160036055A1

公开(公告)日：2016-02-04

申请号：US14773712

申请日：2014-03-20

Applicant: ZEON CORPORATION

Inventor： Norikazu YAMAMOTO

IPC: H01M4/62 ,  H01M4/38 ,  H01M4/1391 ,  H01M4/587 ,  H01M4/36 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/48

CPC classification number: H01M4/622 ,  H01M4/0404 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/386 ,  H01M4/48 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/027

Abstract: A slurry composition includes a negative electrode active material, a particulate binder, a water soluble polymer, and water. The particulate binder includes a first particulate binder and a second particulate binder. The first particulate binder includes a copolymer (A) including an aliphatic conjugated diene monomer unit and an aromatic vinyl monomer unit, has a degree of swelling in electrolysis solution of 110% to 200% by mass, has a glass transition temperature of −30° C. to 60° C., and has a gel content of 70% to 98% by mass. The second particulate binder includes a copolymer (B) including an aliphatic conjugated diene monomer unit and an aromatic vinyl monomer unit, has a degree of swelling in electrolysis solution of 250% to 600% by mass, and has a gel content of 70% to 98% by mass.

Abstract translation: 浆料组合物包括负极活性物质，颗粒粘合剂，水溶性聚合物和水。 颗粒粘合剂包括第一颗粒粘合剂和第二颗粒粘合剂。 第一颗粒粘合剂包括包含脂族共轭二烯单体单元和芳族乙烯基单体单元的共聚物（A），电解溶液中的溶胀度为110质量％至200质量％，玻璃化转变温度为-30℃ 至60℃，凝胶含量为70〜98质量％。 第二颗粒粘合剂包括包含脂族共轭二烯单体单元和芳族乙烯基单体单元的共聚物（B），其电解溶液的溶胀度为250〜600质量％，凝胶含量为70％〜 98质量％。

公开(公告)号：US20240429394A1

公开(公告)日：2024-12-26

申请号：US18703361

申请日：2022-11-22

Applicant: ZEON CORPORATION

Inventor： Hiroki OSHIMA ,  Norikazu YAMAMOTO

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/38 ,  H01M10/0525

Abstract: Provided is a conductive material paste for a non-aqueous electrolyte solution secondary battery that is capable of providing a non-aqueous electrolyte solution secondary battery having excellent electrolyte solution injectability, low-temperature characteristics, and cycle characteristics. The conductive material paste for a non-aqueous electrolyte solution secondary battery contains carbon nanotubes, acidic group-containing cellulose nanofibers, and water. A mass ratio of the acidic group-containing cellulose nanofibers relative to the carbon nanotubes (acidic group-containing cellulose nanofibers/carbon nanotubes) is not less than 0.3 and not more than 4.

公开(公告)号：US20240128459A1

公开(公告)日：2024-04-18

申请号：US18393697

申请日：2023-12-22

Applicant: ZEON CORPORATION

Inventor： Mayumi FUKUMINE ,  Norikazu YAMAMOTO

IPC: H01M4/62 ,  C08F220/18 ,  C08J3/215

CPC classification number: H01M4/622 ,  C08F220/1802 ,  C08J3/215 ,  C08J2301/02 ,  C08J2433/08

Abstract: Provided is a novel technique that enables an electrochemical device to display excellent high-temperature storage characteristics. A composition for an electrochemical device electrode contains a conductive material, a particulate polymer including a polar group-containing monomer unit, a water-soluble polymer, and water. The polar group-containing monomer unit is at least one selected from the group consisting of a hydrophilic group-containing monomer unit and a nitrile group-containing monomer unit.

公开(公告)号：US20200347172A1

公开(公告)日：2020-11-05

申请号：US16758855

申请日：2018-11-19

Applicant: ZEON CORPORATION

Inventor： Norikazu YAMAMOTO

IPC: C08F297/04 ,  H01M4/62 ,  C08K3/04 ,  C08L9/06

Abstract: Provided is a binder composition for a non-aqueous secondary battery electrode with which it is possible to form an electrode having excellent electrolyte solution injectability and process adhesiveness. The binder composition for a non-aqueous secondary battery electrode contains a particulate polymer formed by a polymer that includes a block region composed of an aromatic vinyl monomer unit and has a tetrahydrofuran-insoluble content of not less than 5 mass % and not more than 40 mass %. The binder composition for a non-aqueous secondary battery electrode preferably further contains a water-soluble polymer that includes a hydrophilic group and has a weight-average molecular weight of not less than 15,000 and not more than 500,000.