公开(公告)号：US20240429396A1

公开(公告)日：2024-12-26

申请号：US18684835

申请日：2022-06-30

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI ,  Takumi SUGIMOTO ,  Noriyuki OSHIDA

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/36

Abstract: Composite particles contain an electrode active material, a conductive material, and a binder. These composite particles have an average value of area-equivalent diameter of not less than 20 μm and not more than 250 μm, a coefficient of variation of area-equivalent diameter, calculated according to formula 1: (standard deviation of area-equivalent diameter/average value of area-equivalent diameter)×100, of not less than 5% and not more than 50%, and a coefficient of density, calculated according to formula 2: compressed density/bulk density, of not less than 1.3 and not more than 3.5.

公开(公告)号：US20200052270A1

公开(公告)日：2020-02-13

申请号：US16323324

申请日：2017-07-14

Applicant: ZEON CORPORATION

Inventor： Takumi SUGIMOTO

IPC: H01M2/16

Abstract: A composition for a non-aqueous secondary battery functional layer including a particulate polymer, wherein the particulate polymer is a copolymer containing 20% by weight or more and 80% by weight or less of an aromatic monovinyl monomer unit; and 0.01% by weight or more and 2% by weight or less of a polyvalent ethylenically unsaturated crosslinkable monomer unit, a volume-average particle diameter D of the particulate polymer is 0.5 μm or more and 5 μm or less, and a swelling degree of the particulate polymer to an electrolyte solution is more than 1 time and 3 times or less; and a non-aqueous secondary battery including the same.

公开(公告)号：US20210075017A1

公开(公告)日：2021-03-11

申请号：US16772157

申请日：2018-12-18

Applicant: ZEON CORPORATION

Inventor： Takumi SUGIMOTO ,  Keiichiro TANAKA

IPC: H01M4/60 ,  H01M10/0525 ,  H01M4/36 ,  H01M2/16 ,  H01M10/0585

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer with which it is possible to form a functional layer that can cause a battery member for a non-aqueous secondary battery to display a balance of both high blocking resistance and high process adhesiveness. The composition for a non-aqueous secondary battery functional layer contains a particulate polymer having a core-shell structure including a core portion and a shell portion covering at least a portion of an outer surface of the core portion. The core portion is formed of a polymer A and the shell portion is formed of a polymer B including not less than 1 mol % and not more than 30 mol % of a sulfo group-containing monomer unit.

公开(公告)号：US20160126553A1

公开(公告)日：2016-05-05

申请号：US14890664

申请日：2014-05-14

Applicant: ZEON CORPORATION

Inventor： Tomoya MURASE ,  Takumi SUGIMOTO ,  Ikuya MESUDA

IPC: H01M4/62 ,  C09J133/08 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/525

CPC classification number: H01M4/622 ,  C08K3/22 ,  C08K2003/2203 ,  C09J133/08 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/131 ,  H01M4/139 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525

Abstract: The disclosed binder composition for the positive electrode of a lithium ion secondary battery includes a binder and an organic dispersion medium, a weight-average molecular weight of the binder being from 100,000 to 2,000,000, and the binder containing 10% to 35% by mass of an ethylenically unsaturated monomer unit containing an acid group, and includes 0.6 to 1.5 equivalents of lithium with respect to the acid group. The disclosed slurry composition for the positive electrode of a lithium ion secondary battery includes this binder composition, a positive electrode active material, and a conductive material.

Abstract translation: 所公开的锂离子二次电池正极用粘合剂组合物包括粘合剂和有机分散介质，粘合剂的重均分子量为100,000〜2,000,000，粘合剂含有10〜35质量％ 含有酸基的烯属不饱和单体单元，相对于酸基包含0.6〜1.5当量的锂。 所公开的用于锂离子二次电池的正极的浆料组合物包括该粘合剂组合物，正极活性材料和导电材料。

公开(公告)号：US20240372070A1

公开(公告)日：2024-11-07

申请号：US18684688

申请日：2022-06-30

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI ,  Takumi SUGIMOTO ,  Noriyuki OSHIDA

IPC: H01M4/1391 ,  H01M4/02 ,  H01M4/525 ,  H01M4/62

Abstract: The following are performed in stated order inside of a granulation tank including two or more agitators having different stirring axes to one another: (i) stirring a powder material containing an electrode active material to place the powder material in a stirred state; (ii) adding a composition containing a binder and a solvent to the powder material in the stirred state to obtain pre-composite particles; and (iii) stirring the pre-composite particles after addition of the composition is complete to perform particle adjustment and obtain composite particles.

公开(公告)号：US20220085311A1

公开(公告)日：2022-03-17

申请号：US17424497

申请日：2020-01-14

Applicant: ZEON CORPORATION

Inventor： Takumi SUGIMOTO

IPC: H01L51/44 ,  H01B1/24 ,  H01B13/00

Abstract: A conductive film contains a carbon material, a polymeric compound, and alkali metal atoms. The content of the polymeric compound is not less than 5 mass % and not more than 40 mass %, and the content of the alkali metal atoms is not less than 5.0 mass % and not more than 15.0 mass %.

公开(公告)号：US20200335827A1

公开(公告)日：2020-10-22

申请号：US16954520

申请日：2018-12-18

Applicant: ZEON CORPORATION

Inventor： Takumi SUGIMOTO ,  Keiichiro TANAKA

IPC: H01M10/0585 ,  H01M2/16 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525 ,  B32B7/12 ,  B32B15/085 ,  B32B15/20 ,  B32B27/32 ,  B32B37/12 ,  B32B37/18 ,  C09J133/08 ,  C09J125/14 ,  C09J151/08 ,  C08L33/08 ,  C08L25/14 ,  C08L51/08

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer with which it is possible to form a functional layer that can cause a battery component including the functional layer to display a balance of both high blocking resistance and high process adhesiveness. The composition for a non-aqueous secondary battery functional layer contains a particulate polymer having a core-shell structure including a core portion and a shell portion at least partially covering an outer surface of the core portion. The core portion is formed by a polymer A and the shell portion is formed by a polymer B including not less than 1 mass % and not more than 20 mass % of a cyano group-containing monomer unit.

公开(公告)号：US20180090764A1

公开(公告)日：2018-03-29

申请号：US15558634

申请日：2016-03-23

Applicant: ZEON CORPORATION

Inventor： Mayumi FUKUMINE ,  Takumi SUGIMOTO

IPC: H01M4/62 ,  C08F236/12 ,  H01M10/0525 ,  H01M4/36

CPC classification number: H01M4/622 ,  C08F2/38 ,  C08F236/04 ,  C08F236/12 ,  H01M4/04 ,  H01M4/364 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0566 ,  H01M2004/028

Abstract: Provided is a binder composition for a lithium ion secondary battery positive electrode that can suppress expansion of a positive electrode. The disclosed binder composition for a lithium ion secondary battery positive electrode includes a copolymer containing a nitrile group-containing monomer unit and a conjugated diene monomer unit and a solvent. A degree of swelling in electrolysis solution of the copolymer is at least 200 mass % and no greater than 700 mass % and a storage elastic modulus of a binder coating obtained through film formation of the binder composition is at least 1×104 and no greater than 1×109 Pa.

公开(公告)号：US20200266408A1

公开(公告)日：2020-08-20

申请号：US16492867

申请日：2018-03-20

Applicant: ZEON CORPORATION

Inventor： Takumi SUGIMOTO ,  Takuya KANEDA ,  Kenji ARAI

IPC: H01M2/16 ,  H01M4/36 ,  H01M4/62

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer that inhibits cissing in thin film application and enables formation of a functional layer that does not excessively increase the amount of metal deposited on an electrode during secondary battery charging. The composition for a functional layer contains organic particles, a binder, a wetting agent, and water. Content of the wetting agent is more than 1 part by mass and not more than 5 parts by mass per 100 parts by mass of the organic particles.

公开(公告)号：US20200067047A1

公开(公告)日：2020-02-27

申请号：US16322711

申请日：2017-07-14

Applicant: ZEON CORPORATION

Inventor： Takumi SUGIMOTO

IPC: H01M2/16

Abstract: A composition for a non-aqueous secondary battery porous membrane including inorganic particles and a particulate polymer, wherein a volume-average particle diameter d0 of the inorganic particles is 0.1 μm or more and 1.0 μm or less, a weight ratio between the inorganic particles and the particulate polymer is within a range of 95:5 to 50:50, and a volume-average particle diameter d1 of the particulate polymer and the volume-average particle diameter d0 of the inorganic particles satisfy d1/d0>1; and a non-aqueous secondary battery including the same.