公开(公告)号：US12062810B2

公开(公告)日：2024-08-13

申请号：US17273812

申请日：2019-09-25

Applicant: ZEON CORPORATION

Inventor： Koji Annaka ,  Masanobu Sato

IPC: H01M10/0525 ,  H01M10/0585 ,  H01M50/46

CPC classification number: H01M50/461 ,  H01M10/0525 ,  H01M10/0585

Abstract: A secondary battery includes a laminate in which a positive electrode, separator, and negative electrode are stacked in stated order. The coating weight of an adhesive material at a surface Z that is an affixing surface X of the positive electrode and separator and/or an affixing surface Y of the negative electrode and separator satisfies relationship formula (1): A (g/m2)+0.02 (g/m2)

公开(公告)号：US11462727B2

公开(公告)日：2022-10-04

申请号：US16646571

申请日：2018-09-18

Applicant: ZEON CORPORATION

Inventor： Kazuki Asai ,  Koji Annaka

IPC: H01M4/131 ,  C08F220/06 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0565 ,  H01M4/02

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer that has excellent slurry stability and can form a functional layer for which sufficient heat shrinkage resistance is ensured. The composition for a non-aqueous secondary battery functional layer contains organic particles, a water-soluble polymer, and water. The organic particles include a polyfunctional monomer unit in a proportion of not less than 20 mass % and not more than 95 mass %, and the water-soluble polymer includes a hydroxyl group-containing structural unit in a proportion of not less than 15 mass % and not more than 100 mass %.

公开(公告)号：US11430992B2

公开(公告)日：2022-08-30

申请号：US16650865

申请日：2018-09-05

Applicant: ZEON CORPORATION

Inventor： Koji Annaka ,  Kazuki Asai

IPC: H01M4/60 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/04 ,  H01M10/0525

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer with which it is possible to form a functional layer that has excellent heat shrinkage resistance and adhesiveness after immersion in electrolyte solution and that can cause a non-aqueous secondary battery to display excellent cycle characteristics. The composition for a functional layer contains first organic particles, second organic particles, and a solvent. The first organic particles include a polyfunctional ethylenically unsaturated monomer unit in a proportion of not less than 20 mass % and not more than 90 mass %. The second organic particles include a nitrile group-containing monomer unit in a proportion of not less than 20 mass % and not more than 80 mass % and a cross-linkable monomer unit in a proportion of not less than 0.1 mass % and not more than 10 mass %.

公开(公告)号：US11462738B2

公开(公告)日：2022-10-04

申请号：US16470761

申请日：2017-12-14

Applicant: ZEON CORPORATION

Inventor： Koji Annaka ,  Naoki Takahashi ,  Tomoya Murase

IPC: H01M4/62 ,  H01M4/131 ,  H01M4/485 ,  H01M10/0525

Abstract: A slurry composition for a non-aqueous secondary battery negative electrode contains a negative electrode active material including lithium titanium oxide, a binder, and an organic solvent. The binder includes a copolymer that includes a nitrile group-containing monomer unit and at least one selected from an aliphatic conjugated diene monomer unit and an alkylene structural unit and that has a Mooney viscosity (ML1+4, 100° C.) of not less than 50 and not more than 200.

公开(公告)号：US11258133B2

公开(公告)日：2022-02-22

申请号：US16605618

申请日：2018-04-19

Applicant: ZEON CORPORATION

Inventor： Koji Annaka

IPC: H01M50/411 ,  H01M50/409 ,  H01M50/403 ,  H01M50/40 ,  H01M4/62 ,  H01M10/0566 ,  H01M10/058 ,  H01M50/46 ,  H01M10/0525

Abstract: Provided is a binder composition for a non-aqueous secondary battery porous membrane capable of forming a porous membrane having improved adhesiveness in electrolyte solution, heat shrinkage resistance in electrolyte solution, and blocking resistance. The binder composition for a non-aqueous secondary battery porous membrane contains a particulate polymer A and a particulate polymer B having a larger volume-average particle diameter than the particulate polymer A. The particulate polymer A includes a (meth)acrylic acid alkyl ester monomer unit in a proportion of not less than 50 mass % and not more than 90 mass %. The particulate polymer B has a core-shell structure and includes a nitrile group-containing monomer unit in a core portion of the core-shell structure.

公开(公告)号：US10985375B2

公开(公告)日：2021-04-20

申请号：US16331669

申请日：2017-09-08

Applicant: ZEON CORPORATION

Inventor： Koji Annaka ,  Takuya Ishii

IPC: H01M4/13 ,  H01M4/62 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  C08F220/48 ,  C08K3/04 ,  C08K7/06 ,  C08K3/22 ,  C08F2/20 ,  H01M10/0566 ,  H01M4/1391 ,  H01M4/131 ,  C08F2/22 ,  H01M4/02

Abstract: Provided is a slurry composition for a non-aqueous secondary battery positive electrode that has excellent stability and enables formation of a positive electrode mixed material layer that causes a non-aqueous secondary battery to display excellent output characteristics. The slurry composition contains a positive electrode active material and a copolymer. The proportion constituted by nickel among transition metal in the positive electrode active material is at least 30.0 mol % and not more than 100.0 mol %. The copolymer includes a nitrile group-containing monomer unit in a proportion of at least 70.0 mass % and not more than 96.0 mass % and a basic group-containing monomer unit in a proportion of at least 0.1 mass % and not more than 5.0 mass %.

公开(公告)号：US11811087B2

公开(公告)日：2023-11-07

申请号：US17266107

申请日：2019-08-22

Applicant: ZEON CORPORATION

Inventor： Hiroshi Koga ,  Masanobu Sato ,  Koji Annaka

IPC: H01M50/443 ,  H01M50/414 ,  H01M50/403 ,  H01M50/46 ,  H01M4/13 ,  H01M4/139 ,  H01M50/449 ,  C09J151/00 ,  H01M4/04

CPC classification number: H01M50/443 ,  C09J151/003 ,  H01M4/0419 ,  H01M4/0471 ,  H01M4/13 ,  H01M4/139 ,  H01M50/403 ,  H01M50/414 ,  H01M50/461 ,  H01M50/449

Abstract: Provided is a composition for a non-aqueous secondary battery adhesive layer containing organic particles, a thixotropic agent, and water. The organic particles have a core-shell structure including a core portion and a shell portion at least partially covering an outer surface of the core portion. The composition for a non-aqueous secondary battery adhesive layer has a viscosity η0 at a shear rate of 100 s−1 of less than 10 mPa·s, a viscosity η1 at a shear rate of 10,000 s−1 of not less than 0.5 mPa·s and not more than 2.4 mPa·s, and a ratio (η0/η1) of the viscosity η0 relative to the viscosity η1 of not less than 1.2 and not more than 10.

公开(公告)号：US11710821B2

公开(公告)日：2023-07-25

申请号：US16646142

申请日：2018-09-19

Applicant: ZEON CORPORATION

Inventor： Koji Annaka ,  Kazuki Asai

IPC: H01M4/36 ,  H01M4/62 ,  H01M50/449 ,  H01M50/42 ,  H01M50/443 ,  H01M50/417

CPC classification number: H01M4/366 ,  H01M4/622 ,  H01M50/42 ,  H01M50/443 ,  H01M50/449 ,  H01M50/417

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer with which it is possible to form a functional layer that has excellent heat shrinkage resistance and can cause a non-aqueous secondary battery to display excellent cycle characteristics. The composition for a non-aqueous secondary battery functional layer contains organic particles and a solvent. The organic particles include a polyfunctional ethylenically unsaturated monomer unit in a proportion of not less than 55 mass % and not more than 90 mass %, and have a volume-average particle diameter of not less than 50 nm and not more than 370 nm.

公开(公告)号：US11046797B2

公开(公告)日：2021-06-29

申请号：US16082677

申请日：2017-03-24

Applicant: ZEON CORPORATION

Inventor： Kunihiro Goto ,  Maki Mesuda ,  Koji Annaka ,  Takuya Ishii

IPC: H01M4/13 ,  H01M4/62 ,  C08F220/48 ,  H01G11/38 ,  C08F220/44 ,  H01M4/139 ,  C08F220/46 ,  H01G11/30 ,  H01M10/0525

Abstract: A disclosed binder composition comprises a copolymer which comprises a nitrile group-containing monomer unit, an acidic group-containing monomer unit and a basic group-containing monomer unit, wherein the proportion of the nitrile group-containing monomer unit in the copolymer is 70.0 mol % or more and 99.0 mol % or less, and wherein the total proportion of the acidic group-containing monomer unit and the basic group-containing monomer unit in the copolymer is 0.8 mol % or more and 10.0 mol % or less.