公开(公告)号：US20200052301A1

公开(公告)日：2020-02-13

申请号：US16486504

申请日：2018-03-01

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI ,  Norikazu YAMAMOTO

IPC: H01M4/62 ,  H01M4/13 ,  H01M2/16 ,  H01M10/058

Abstract: Provided is a binder composition for non-aqueous secondary battery functional layers comprising a an organic solvent having a boiling point under 1 atm of 30° C. or higher and 100° C. or lower, and a polymer A comprising (meth)acrylonitrile monomer unit and a (meth)acrylic acid ester monomer unit.

公开(公告)号：US20180212218A1

公开(公告)日：2018-07-26

申请号：US15745831

申请日：2016-07-21

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI ,  Junichi ASANO

IPC: H01M2/16 ,  H01M4/13 ,  C08L33/26

CPC classification number: H01M2/16 ,  C08L33/26 ,  C08L2205/025 ,  C08L2205/22 ,  H01M2/166 ,  H01M4/13 ,  H01M4/622 ,  H01M10/0525

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer that has excellent redispersibility of non-conductive particles and enables formation of a functional layer for a non-aqueous secondary battery having excellent flexibility. Also provided are a functional layer for a non-aqueous secondary battery formed using this composition for a non-aqueous secondary battery functional layer and a non-aqueous secondary battery including this functional layer for a non-aqueous secondary battery. The composition for a non-aqueous secondary battery functional layer contains non-conductive particles, a water-soluble polymer that includes a (meth)acrylamide monomer unit in a proportion of 40 mass % or more and has a weight average molecular weight of less than 3.0×105, and a particulate polymer.

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：US20240154088A1

公开(公告)日：2024-05-09

申请号：US18549588

申请日：2022-03-30

Applicant: ZEON CORPORATION

Inventor： Yukie ITO ,  Kazuki ASAI

IPC: H01M4/131 ,  H01M4/36 ,  H01M4/525 ,  H01M4/62 ,  H01M4/66

CPC classification number: H01M4/131 ,  H01M4/366 ,  H01M4/525 ,  H01M4/622 ,  H01M4/625 ,  H01M4/661 ,  H01M2004/021

Abstract: Provided is an electrode for an electrochemical device that has excellent flexibility, suppressed warping, and reduced interfacial resistance between an electrode mixed material layer and a current collector and that can cause an electrochemical device to display excellent high-temperature storage characteristics. The electrode includes a current collector and an electrode mixed material layer formed on the current collector. The current collector is formed of either or both of aluminum and an aluminum alloy, has a thickness of not less than 5 μm and less than 15 μm, and has a breaking elongation of 10% to 40%. The electrode mixed material layer contains electrode active material particles, a conductive material including a fibrous carbon material, and a binder and has a mass per unit area of 21 mg/cm2 to 30 mg/cm2, a storage modulus of 0.1 GPa to 2.2 GPa, and a loss modulus of 0.01 GPa to 0.04 GPa.

公开(公告)号：US20230303931A1

公开(公告)日：2023-09-28

申请号：US18004304

申请日：2021-08-16

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI

IPC: C09K23/52 ,  H01M4/62 ,  H01M4/505 ,  H01M4/525 ,  C08F236/12 ,  H01G11/36 ,  H01G11/86 ,  H01G11/38

CPC classification number: C09K23/52 ,  C08F236/12 ,  H01G11/36 ,  H01G11/38 ,  H01G11/86 ,  H01M4/505 ,  H01M4/525 ,  H01M4/623 ,  H01M4/625

Abstract: Provided is a novel technique related to electrochemical devices that can cause an electrochemical device to display excellent rate characteristics and high-temperature storage characteristics. The electrochemical device is produced using a dispersant composition for an electrochemical device that contains a polymer A. This polymer A includes a nitrile group-containing monomer unit and has an intrinsic viscosity of not less than 0.15 dL/g and less than 1.20 dL/g when dissolved in N-methyl-2-pyrrolidone and measured at a temperature of 25° C.

公开(公告)号：US20220320605A1

公开(公告)日：2022-10-06

申请号：US17635766

申请日：2020-08-21

Applicant: ZEON CORPORATION

Inventor： Yuzo KITAZAWA ,  Kazuki ASAI

IPC: H01M10/42 ,  C08L33/20 ,  C08K3/30 ,  C08K3/22

Abstract: Provided is a binder composition for a non-aqueous secondary battery heat-resistant layer containing a particulate polymer that includes a cyano group-containing monomer unit and a hydroxyl group-containing monomer unit and for which a value (MOH/S) obtained by dividing a value MOH of a mole fraction of the hydroxyl group-containing monomer unit in the particulate polymer by a value S (μm2) of surface area of the particulate polymer is 0.40 or more.

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：US20210066691A1

公开(公告)日：2021-03-04

申请号：US16960086

申请日：2019-01-24

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI

IPC: H01M2/16 ,  H01M10/0525 ,  H01M2/14

Abstract: Provided are a composition for a lithium ion secondary battery separator containing: a liquid medium; and 40 mass % or less of a first compound including a function-displaying functional group and having a molecular weight of 50,000 or less, and having a surface tension of 15 mN/m to 30 mN/m, and a two-part composition for a lithium ion secondary battery separator including: a first liquid containing a first compound and first liquid medium; and a second liquid containing a second compound and second liquid medium, wherein the first compound includes a function-displaying functional group and has a molecular weight of 50,000 or less, the second compound is reactive with the first compound and has a molecular weight of 50,000 or less, and the first and second liquids each contain the corresponding compound in a proportion of 40 mass % or less and have a surface tension of 15 mN/m to 30 mN/m.

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：US20190207189A1

公开(公告)日：2019-07-04

申请号：US16323624

申请日：2017-08-02

Applicant: ZEON CORPORATION

Inventor： Kenji ARAI ,  Keiichiro TANAKA ,  Kazuki ASAI

IPC: H01M2/16 ,  H01M10/0585 ,  H01M4/1391 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/42

CPC classification number: H01M2/1653 ,  H01M2/16 ,  H01M4/13 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/62 ,  H01M4/622 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/4235

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer capable of forming a functional layer for a non-aqueous secondary battery that has excellent adhesiveness after immersion in electrolyte solution and can cause a non-aqueous secondary battery to display excellent cycle characteristics and output characteristics. The composition for a non-aqueous secondary battery functional layer contains organic particles and a binder for a functional layer. The organic particles have an electrolyte solution elution amount of at least 0.001 mass % and not more than 5.0 mass %.