公开(公告)号：US20210218030A1

公开(公告)日：2021-07-15

申请号：US17255430

申请日：2019-06-18

Applicant: ZEON CORPORATION

Inventor： Yukie ITO ,  Tomoya MURASE ,  Takafumi SEKIMOTO

IPC: H01M4/62 ,  H01M4/583 ,  H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/04 ,  H01M4/66

Abstract: A binder composition for a non-aqueous secondary battery electrode contains: a polymer A including a (meth)acrylic acid ester monomer unit; a polymer B having an iodine value of not less than 5 g/100 g and not more than 100 g/100 g; a polymer C including a nitrile group-containing monomer unit in a proportion of not less than 70 mass % and not more than 98 mass %; and an organic solvent.

公开(公告)号：US20210005894A1

公开(公告)日：2021-01-07

申请号：US16979519

申请日：2019-03-18

Applicant: ZEON CORPORATION

Inventor： Tomoya MURASE ,  Naoki TAKAHASHI ,  Shinsuke SUGAWARA

IPC: H01M4/62 ,  H01M4/60 ,  H01M4/88 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/36 ,  H01M10/0525 ,  C01B32/174

Abstract: Disclosed is a carbon nanotube dispersion liquid containing carbon nanotubes, a binder, and a dispersion medium. The binder includes a polymer (A) containing an aromatic vinyl monomer unit and a linear alkylene structural unit having a carbon number of at least 4. The proportion of the binder in the carbon nanotube dispersion liquid is 30 mass % or less, and the viscosity change rate of the carbon nanotube dispersion liquid as measured under predetermined conditions before and after leaving the carbon nanotube dispersion liquid for 1 week is 50% or more and 300% or less.

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：US20190097235A1

公开(公告)日：2019-03-28

申请号：US16079205

申请日：2017-03-09

Applicant: ZEON CORPORATION

Inventor： Tomoya MURASE ,  Masahiro ONOE

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

Abstract: Provided is a binder for an electrode that enables production of a slurry for an electrode that has excellent dispersibility and can cause a secondary battery to display excellent output characteristics and high-temperature cycle characteristics. The binder for an electrode contains a polymer and an organic solvent. The polymer includes a structural unit derived from a monofunctional ethylenically unsaturated carboxylic acid ester monomer in a proportion of at least 45 mass % and not more than 69.9 mass %, a structural unit derived from an aromatic vinyl monomer in a proportion of at least 30 mass % and not more than 54.9 mass %, and a structural unit derived from an ethylenically unsaturated nitrile monomer in a proportion of at least 0.1 mass % and not more than 10 mass %.

公开(公告)号：US20180198126A1

公开(公告)日：2018-07-12

申请号：US15739763

申请日：2016-07-12

Applicant: ZEON CORPORATION

Inventor： Mayumi FUKUMINE ,  Jun MIKAMI ,  Tomoya MURASE

IPC: H01M4/62 ,  C08L9/02 ,  C08L27/16 ,  H01M10/052

CPC classification number: H01M4/622 ,  C08C19/02 ,  C08F236/06 ,  C08F2500/17 ,  C08F2800/20 ,  C08J3/096 ,  C08J2327/16 ,  C08J2447/00 ,  C08K3/04 ,  C08K3/041 ,  C08L9/02 ,  C08L27/16 ,  C08L101/00 ,  C09D127/16 ,  H01M4/13 ,  H01M4/62 ,  H01M10/052 ,  C08L9/00 ,  C08F220/44 ,  C08K3/01 ,  C08L15/005

Abstract: Provided are a binder composition for a secondary battery electrode that enables favorable dispersion of a conductive material when used in production of a slurry composition for a secondary battery electrode, and a slurry composition for a secondary battery electrode in which a conductive material is favorably dispersed. The binder composition for a secondary battery electrode contains a solvent and a copolymer including an alkylene structural unit and a nitrile group-containing monomer unit. The copolymer has a Mooney viscosity (ML1+4, 100° C.) of 40 or less. The slurry composition for a secondary battery electrode contains an electrode active material, a conductive material, the aforementioned binder composition for a secondary battery electrode, and a polymer other than the aforementioned copolymer.

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：US20150311490A1

公开(公告)日：2015-10-29

申请号：US14646701

申请日：2013-11-26

Applicant: ZEON CORPORATION

Inventor： Tomoya MURASE ,  Yujiro TOYODA ,  Takuya KANEDA

IPC: H01M2/16 ,  H01M2/14 ,  C09J133/26 ,  H01M10/0525

CPC classification number: H01M2/168 ,  C09J133/26 ,  C09J2433/003 ,  H01M2/145 ,  H01M4/139 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0525

Abstract: To provide a method for producing an electrode/separator laminate which, when producing the electrode/separator laminate by subjecting the electrode and separator with adhesive layer to thermocompression bonding, the separator and the electrode can be bonded with adequate adhesion, without detriment to ion conductivity. [Solution] This method for producing an electrode/separator laminate includes a step in which a separator with adhesive layer comprising a porous polyolefin film having an adhesive layer at least on one side, and an electrode which has an electrode active substance layer containing an electrode active substance and an electrode binder, are laminated in such a manner that the adhesive layer and the electrode active substance layer touch one another, and are subsequently subjected to thermocompression.

Abstract translation: 提供一种电极/隔板层叠体的制造方法，在通过使电极和隔膜通过粘合剂层进行热压接来制造电极/隔膜层叠体时，隔板和电极可以以足够的粘合力粘合而不损害离子传导性 。 [解决方案]电极/隔板层合体的制造方法具有以下工序：将具有粘接剂层的粘合剂层的隔膜的至少一面侧具有粘合剂层的电极和含有电极活性物质层的电极 活性物质和电极粘合剂以使粘合剂层和电极活性物质层彼此接触的方式层压，然后进行热压。

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：US20220181631A1

公开(公告)日：2022-06-09

申请号：US17594417

申请日：2020-04-17

Applicant: ZEON CORPORATION

Inventor： Tomoya MURASE ,  Junichi ASANO ,  Fumiaki BANDO

IPC: H01M4/62 ,  H01M4/04 ,  H01M10/0569

Abstract: A binder composition for a non-aqueous secondary battery electrode contains a polymer A. The polymer A includes a nitrile group-containing monomer unit in a proportion of not less than 80.0 mass % and not more than 99.9 mass %, has a weight-average molecular weight (Mw) of not less than 700,000 and not more than 2,000,000, and has a molecular weight distribution (Mw/Mn) of less than 3.0.

公开(公告)号：US20190148699A1

公开(公告)日：2019-05-16

申请号：US16097932

申请日：2017-04-20

Applicant: ZEON CORPORATION

Inventor： Junnosuke AKIIKE ,  Tomoya MURASE

IPC: H01M2/16 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/131

Abstract: Provided is a non-aqueous secondary battery having excellent high-temperature cycle characteristics and low-temperature output characteristics. The non-aqueous secondary battery includes a positive electrode, a negative electrode, a separator, and an electrolyte solution. At least one of the positive electrode, the negative electrode, and the separator includes a porous membrane. The porous membrane contains non-conductive particles and a polymer that has a nitrile group and includes an alkylene structural unit. The electrolyte solution contains a non-aqueous solvent and a supporting electrolyte. A propionic acid compound constitutes at least 50 volume % and not more than 100 volume % of the non-aqueous solvent.