公开(公告)号：US20230420685A1

公开(公告)日：2023-12-28

申请号：US18459446

申请日：2023-09-01

Applicant: ZEON CORPORATION

Inventor： Naoki TAKAHASHI ,  Tomoya MURASE ,  Yuko KOHINATA

IPC: H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/622 ,  H01M10/0525

Abstract: A slurry composition for a secondary battery electrode comprises: a binder composition for a secondary battery, an electrode active material; and a conductive material. The binder composition for a secondary battery comprises: a polymer including a nitrile group-containing monomer unit, an aromatic vinyl monomer unit, and a linear alkylene structural unit; and a solvent. The polymer has a viscosity of not less than 10 mPa·s and not more than 400 mPa·s as an N-methyl-2-pyrrolidone solution of 8 mass % in concentration.

公开(公告)号：US20220231297A1

公开(公告)日：2022-07-21

申请号：US17595943

申请日：2020-05-19

Applicant: ZEON CORPORATION

Inventor： Shinsuke SUGAWARA ,  Naoki TAKAHASHI

IPC: H01M4/62 ,  H01M4/505 ,  H01M4/525 ,  H01M4/04 ,  C01G53/00

Abstract: Provided is a method of producing a slurry composition for a secondary battery positive electrode containing an organic solvent, a specific polymer, and a positive electrode active material satisfying a specific chemical composition. The specific polymer includes a nitrile group-containing monomer unit and a linear alkylene structural unit having a carbon number of 4 or more. The pH of an extract of the specific polymer that is obtained by a specific method is not lower than 3.5 and lower than 6.0. The positive electrode active material is an active material having a high nickel content ratio.

公开(公告)号：US20220190341A1

公开(公告)日：2022-06-16

申请号：US17595315

申请日：2020-05-19

Applicant: ZEON CORPORATION

Inventor： Shinsuke SUGAWARA ,  Naoki TAKAHASHI

IPC: H01M4/62 ,  C08F212/10 ,  C08F220/42 ,  H01M10/0569 ,  H01M4/04

Abstract: A binder composition for a secondary battery positive electrode contains a specific polymer. The specific polymer includes a nitrile group-containing monomer unit and a linear alkylene structural unit having a carbon number of 4 or more. The pH of an extract of the specific polymer that is obtained by a specific method is 5.5 or higher.

公开(公告)号：US20240347732A1

公开(公告)日：2024-10-17

申请号：US18293881

申请日：2022-08-19

Applicant: ZEON CORPORATION

Inventor： Yukie ITO ,  Naoki TAKAHASHI

IPC: H01M4/62 ,  H01M4/02

CPC classification number: H01M4/622 ,  H01M4/625 ,  H01M2004/028

Abstract: A binder composition for an electrochemical device positive electrode contains a polymer and an organic compound. The polymer includes a nitrile group-containing monomer unit and an alkylene structural unit. The organic compound includes not fewer than 2 and not more than 15 aromatic hydrocarbon monocycles and not fewer than 2 and not more than 15 sulfur atom-containing functional groups, on average, per one molecule.

公开(公告)号：US20190165350A1

公开(公告)日：2019-05-30

申请号：US16063800

申请日：2016-12-13

Applicant: ZEON CORPORATION

Inventor： Hiroki OGURO ,  Kouichirou MAEDA ,  Naoki TAKAHASHI

IPC: H01M2/16 ,  H01M10/0525

Abstract: Provided is a heat-sensitive layer for a lithium ion secondary battery that can efficiently block rising temperature during abnormal heating by increasing battery internal resistance and thereby reducing current. The heat-sensitive layer for a lithium ion secondary battery is formed from a heat-sensitive layer composition containing particles in each of which a second component is substantially partially disposed at the outside of a particle formed from a first component. The heat-sensitive layer composition has a storage modulus at 60° C. of 10 kPa or more and a storage modulus at 150° C. of 1 kPa or less.

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：US20230420650A1

公开(公告)日：2023-12-28

申请号：US18252719

申请日：2021-11-05

Applicant: ZEON CORPORATION

Inventor： Naoki TAKAHASHI ,  Yukie ITO

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

CPC classification number: H01M4/364 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/021

Abstract: An electrode for an electrochemical device having excellent flexibility includes an electrode mixed material layer that contains an electrode active material, a conductive material, and a binder. The conductive material includes a fibrous conductive material. The proportional content of the fibrous conductive material in the electrode mixed material layer is not less than 0.3 mass % and not more than 1.5 mass %. The binder includes a polymer A that includes a nitrile group-containing monomer unit and an alkylene structural unit and that has a Mooney viscosity (ML1+4, 100° C.) of not less than 70 and not more than 150. The polymer A is contained in the electrode mixed material layer in a proportion of not less than 50 parts by mass and not more than 200 parts by mass per 100 parts by mass of the fibrous conductive material.

公开(公告)号：US20220020994A1

公开(公告)日：2022-01-20

申请号：US17312392

申请日：2019-12-12

Applicant: ZEON CORPORATION

Inventor： Akito NAKAI ,  Naoki TAKAHASHI ,  Tomoya MURASE

IPC: H01M4/62 ,  H01M10/0525 ,  C08F212/08 ,  C08F36/06

Abstract: A binder composition for a secondary battery electrode contains a polymer that includes a nitrile group-containing monomer unit, an aromatic vinyl monomer unit, and a linear alkylene structural unit but does not include a hydrophilic group-containing monomer unit.

公开(公告)号：US20200036008A1

公开(公告)日：2020-01-30

申请号：US16494849

申请日：2018-02-26

Applicant: ZEON CORPORATION

Inventor： Naoki TAKAHASHI

IPC: H01M4/62 ,  C08F236/12 ,  C08F212/08

Abstract: The present disclosure is directed to providing a binder composition for a non-aqueous secondary battery electrode which can improve the peel strengths of electrodes while increasing the pressibilities of pre-pressing electrode mixed material layers. The presently disclosed binder composition contains a polymer A, wherein the polymer A includes an aliphatic conjugated diene monomer unit and a nitrile-group containing monomer unit, and the polymer A has a THF-insoluble content of 20% by mass or less.

公开(公告)号：US20190148732A1

公开(公告)日：2019-05-16

申请号：US16308818

申请日：2017-06-23

Applicant: ZEON CORPORATION

Inventor： Naoki TAKAHASHI ,  Norikazu YAMAMOTO

IPC: H01M4/62 ,  C08L9/00

Abstract: Provided is a binder composition for a non-aqueous secondary battery electrode that can form an electrode that has excellent peel strength and for which metal deposition at the surface thereof after charging and discharging is inhibited. The binder composition contains a polymer A and a polymer B. The polymer A has a THF-insoluble content of 60 mass % or less and the polymer B has a THF-insoluble content of 80 mass % or more.