公开(公告)号：US20220085376A1

公开(公告)日：2022-03-17

申请号：US17423896

申请日：2020-01-24

Applicant: ZEON CORPORATION

Inventor： Norikazu YAMAMOTO ,  Masayo SONO ,  Tetsuya AKABANE ,  Keiichiro TANAKA

IPC: H01M4/62 ,  C08F293/00

Abstract: Provided is a binder composition for a non-aqueous secondary battery electrode that enables production of a slurry composition that can be used in high-speed application and high-speed pressing and that enables formation of an electrode for a non-aqueous secondary battery that can cause a non-aqueous secondary battery to display excellent low-temperature cycle characteristics. The binder composition contains water and a particulate polymer that is formed of a polymer including a block region formed of an aromatic vinyl monomer unit. The particulate polymer has a volume-average particle diameter of not less than 0.08 μm and less than 0.6 μm.

公开(公告)号：US20210135225A1

公开(公告)日：2021-05-06

申请号：US16766291

申请日：2018-11-20

Applicant: ZEON CORPORATION

Inventor： Norikazu YAMAMOTO ,  Shunjin AIHARA

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/36

Abstract: Provided is a binder composition for a non-aqueous secondary battery with which it is possible to form a slurry composition for a non-aqueous secondary battery functional layer having excellent viscosity stability and a functional layer for a non-aqueous secondary battery having excellent pressability. The binder composition for a non-aqueous secondary battery contains water and a particulate polymer formed by a polymer including a block region composed of an aromatic vinyl monomer unit. The particulate polymer has a surface acid content of not less than 0.05 mmol/g and not more than 0.9 mmol/g.

公开(公告)号：US20210098789A1

公开(公告)日：2021-04-01

申请号：US17040980

申请日：2019-04-02

Applicant: ZEON CORPORATION

Inventor： Hidetake ISHII ,  Norikazu YAMAMOTO

IPC: H01M4/62 ,  H01M4/13 ,  H01M10/0525 ,  C08L53/02

Abstract: Provided is a binder composition capable of forming a functional layer that can both inhibit post-cycling swelling of a secondary battery and increase charge carrier acceptance of the secondary battery at low temperatures. The binder composition contains a first polymer, a second polymer, and a solvent. The first polymer is a block copolymer including a block region formed of an aromatic vinyl monomer unit and a block region formed of an aliphatic conjugated diene monomer unit and/or a hydrogenated aliphatic conjugated diene monomer unit. The second polymer is a random copolymer including a 1,3-pentadiene unit and/or a hydrogenated 1,3-pentadiene unit.

公开(公告)号：US20220293941A1

公开(公告)日：2022-09-15

申请号：US17593293

申请日：2020-03-17

Applicant: ZEON CORPORATION

Inventor： Norikazu YAMAMOTO ,  Hiroyuki NITADORI

IPC: H01M4/583 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/48 ,  H01M4/62

Abstract: Provided is a slurry composition for a non-aqueous secondary battery negative electrode that can form a negative electrode that can inhibit secondary battery swelling. The slurry composition for a non-aqueous secondary battery negative electrode contains a particulate polymer, water, and a negative electrode active material that includes negative electrode active materials (A) and (B). The negative electrode active material (A) is graphite particles having an orientation ratio of not less than 7.5 and not more than 9.5. The negative electrode active material (B) is composite particles each including a silicon oxide particle and a conductive carbon film at least partially covering a surface of the silicon oxide particle. The silicon oxide particle contains silicon oxide represented by SiOx (0.5≤x

公开(公告)号：US20210111408A1

公开(公告)日：2021-04-15

申请号：US16757765

申请日：2017-10-19

Applicant: ZEON CORPORATION

Inventor： Yusaku MATSUO ,  Norikazu YAMAMOTO

IPC: H01M4/62 ,  H01M10/0525 ,  C08L51/00 ,  C08L33/06

Abstract: A binder composition for a non-aqueous secondary battery electrode contains a particulate polymer A and a particulate polymer B. The particulate polymer A is a block copolymer including an aromatic vinyl monomer unit and an aliphatic conjugated diene monomer unit having a carbon number of 4 or more. The particulate polymer B is a random copolymer including a (meth)acrylic acid ester monomer unit in a proportion of not less than 20.0 mass % and not more than 80.0 mass %.

公开(公告)号：US20190044148A1

公开(公告)日：2019-02-07

申请号：US16074499

申请日：2017-02-08

Applicant: ZEON CORPORATION

Inventor： Norikazu YAMAMOTO

IPC: H01M4/62 ,  H01M4/139 ,  C08F220/18 ,  C08F236/08 ,  C08L9/00

Abstract: Provided is a binder composition for a non-aqueous secondary battery electrode that enables formation of 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. A binder composition according to a first aspect contains a particulate polymer A1 that includes an aliphatic conjugated diene monomer unit in a proportion of 70 mass % to 99 mass % and a carboxylic acid group-containing monomer unit in a proportion of 1 mass % to 30 mass %. A binder composition according to a second aspect contains a particulate polymer A2 that includes an aliphatic conjugated diene monomer unit in a proportion of 70 mass % to 95 mass % and a (meth)acrylic acid ester monomer unit in a proportion of 1 mass % to 30 mass %, and that has a degree of swelling in electrolyte solution of a factor of 1.2 to 7.0.

公开(公告)号：US20180301744A1

公开(公告)日：2018-10-18

申请号：US15580056

申请日：2016-06-22

Applicant: ZEON CORPORATION

Inventor： Mayumi FUKUMINE ,  Norikazu YAMAMOTO

IPC: H01M10/0525 ,  H01G11/06 ,  H01M4/583 ,  H01M4/38 ,  H01M4/66 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M2/16 ,  C08K3/04 ,  C08L33/08

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：US20170317354A1

公开(公告)日：2017-11-02

申请号：US15525351

申请日：2015-11-20

Applicant: ZEON CORPORATION

Inventor： Norikazu YAMAMOTO

IPC: H01M4/62 ,  C08F212/08 ,  B03C1/02 ,  C08L25/14 ,  H01M10/0525 ,  H01G11/84

CPC classification number: H01M4/622 ,  B03C1/02 ,  C08F212/08 ,  C08L25/14 ,  C08L2201/54 ,  H01G11/38 ,  H01G11/84 ,  H01G11/86 ,  H01M2/145 ,  H01M4/04 ,  H01M4/623 ,  H01M10/0525 ,  Y02E60/13

Abstract: Provided is a method for producing a binder composition for an electrochemical device that can sufficiently inhibit importation of contaminants into an electrochemical device when used in production of the electrochemical device. The method for producing a binder composition for an electrochemical device includes filling, into a container, a binder composition for an electrochemical device that contains a binder, wherein the container is a container made of a resin and shaped in a clean environment in which the number of particles of 0.5 μm in diameter is no greater than 100,000 particles per 1 ft3.

公开(公告)号：US20220006091A1

公开(公告)日：2022-01-06

申请号：US17447971

申请日：2021-09-17

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI ,  Norikazu YAMAMOTO

IPC: H01M4/62 ,  H01M4/13 ,  H01M10/058 ,  H01M50/409

Abstract: A slurry composition for non-aqueous secondary battery functional layers is provided. The slurry composition comprises a polymer A containing a (meth)acrylonitrile monomer unit and a (meth)acrylic acid ester monomer unit; an organic solvent having a boiling point under 1 atm of 30° C. or higher and 100° C. or lower; and non-conductive particles.

公开(公告)号：US20210119214A1

公开(公告)日：2021-04-22

申请号：US17041444

申请日：2019-04-02

Applicant: ZEON CORPORATION

Inventor： Hidetake ISHII ,  Norikazu YAMAMOTO

IPC: H01M4/62 ,  H01M10/0525 ,  C08K3/36 ,  C08K3/34 ,  C08L53/02

Abstract: Provided is a composition for a functional layer capable of forming a functional layer that can both inhibit post-cycling swelling of a secondary battery and increase charge carrier acceptance of the secondary battery at low temperatures. The composition for a functional layer contains non-conductive inorganic particles, a solvent, and a block copolymer including a block region formed of an aromatic vinyl monomer unit and a block region formed of either or both of an aliphatic conjugated diene monomer unit having a carbon number of 5 or more and a hydrogenated aliphatic conjugated diene monomer unit having a carbon number of 5 or more.