公开(公告)号：US10529989B2

公开(公告)日：2020-01-07

申请号：US15500416

申请日：2015-07-23

Applicant: ZEON CORPORATION

Inventor： Takuya Kaneda ,  Kentaro Hayasaka ,  Yusaku Matsuo

IPC: H01M4/62 ,  C08L9/06 ,  C08L33/06 ,  H01M10/0566 ,  H01M4/13 ,  C08L33/20 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/02

Abstract: Provided is a binder composition for a secondary battery electrode that has excellent binding capacity and can cause a secondary battery to display excellent rate characteristics and cycle characteristics. The binder composition for a secondary battery electrode contains: a first particulate polymer having a degree of swelling in electrolysis solution of at least 400 mass % and no greater than 900 mass % and a glass transition temperature of at least −60° C. and no higher than −15° C.; a second particulate polymer having a degree of swelling in electrolysis solution of greater than 100 mass % and no greater than 200 mass % and a glass transition temperature of at least −10° C. and no higher than 30° C.; and water.

公开(公告)号：US20150125745A1

公开(公告)日：2015-05-07

申请号：US14400932

申请日：2013-05-29

Applicant: ZEON CORPORATION

Inventor： Takuya Kaneda

IPC: H01M2/16

CPC classification number: H01M2/1673 ,  H01M2/145 ,  H01M2/1653 ,  H01M4/13 ,  H01M4/139 ,  H01M4/366 ,  H01M4/62 ,  H01M4/80 ,  H01M10/052 ,  H01M10/4235 ,  H01M2004/027

Abstract: A secondary battery negative electrode including a current collector, a negative electrode active material layer, and a porous membrane, wherein the negative electrode active material layer contains a negative electrode active material and a particulate negative electrode polymer, the porous membrane contains non-conductive particles and a porous membrane polymer that is a non-particulate cross-linked polymer, and the non-conductive particles are particles of a polymer that contains 50% by weight or more of a structural unit formed by polymerization of a (meth)acrylate, the polymer having a softening starting point or decomposition point of 175° C. or higher.

Abstract translation: 包含集电体，负极活性物质层和多孔膜的二次电池负极，其中所述负极活性物质层含有负极活性物质和负极聚合物粒子，所述多孔膜含有非导电性粒子 以及作为非微粒交联聚合物的多孔膜聚合物，非导电性粒子是含有50重量％以上的由（甲基）丙烯酸酯聚合形成的结构单元的聚合物粒子， 具有软化起点或分解点为175℃以上的聚合物。

公开(公告)号：US11050117B2

公开(公告)日：2021-06-29

申请号：US16492867

申请日：2018-03-20

Applicant: ZEON CORPORATION

Inventor： Takumi Sugimoto ,  Takuya Kaneda ,  Kenji Arai

IPC: H01M50/411 ,  H01M4/36 ,  H01M4/62 ,  H01M50/449

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：US10290873B2

公开(公告)日：2019-05-14

申请号：US15503789

申请日：2015-08-26

Applicant: ZEON CORPORATION

Inventor： Takuya Kaneda ,  Kentaro Hayasaka ,  Yusaku Matsuo

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  C08F265/04 ,  C08F212/08 ,  C08L51/06 ,  C08L25/14 ,  C08L33/08 ,  C08J3/12 ,  B01J13/14 ,  H01M4/02

Abstract: Provided is a binder composition for a secondary battery electrode that can cause a secondary battery to display excellent rate characteristics and cycle characteristics. The binder composition for a secondary battery electrode contains a first particulate polymer having a core-shell structure including a core portion and a shell portion that partially covers an outer surface of the core portion.

公开(公告)号：US10256449B2

公开(公告)日：2019-04-09

申请号：US14431576

申请日：2013-09-19

Applicant: ZEON CORPORATION

Inventor： Yujiro Toyoda ,  Takuya Kaneda

IPC: H01M2/16 ,  H01M2/14 ,  B01D67/00 ,  H01M10/0525 ,  H01M10/0585 ,  B01D71/40 ,  B01D71/42 ,  B01D71/76

Abstract: A porous membrane separator for a secondary battery, comprising a separator substrate, a porous membrane formed on at least one surface of the separator substrate, and an adhesive layer formed on the porous membrane, wherein: the porous membrane contains non-conductive particles and a water-soluble maleimide-maleic acid copolymer including a specific structural unit (a) a structural unit (b); and the adhesive layer contains a particulate polymer having a glass transition temperature of 10° C. or higher and 110° C. or lower.

公开(公告)号：US20150072213A1

公开(公告)日：2015-03-12

申请号：US14383938

申请日：2013-03-21

Applicant: ZEON CORPORATION

Inventor： Takuya Kaneda

IPC: H01M2/16

CPC classification number: H01M2/1686 ,  H01M2/1653 ,  H01M2/1673

Abstract: A porous membrane for a secondary battery, including non-conductive particles and a binder for a porous membrane, wherein the non-conductive particle is a polymer particle having a core-shell structure, the non-conductive particle has a core portion having a glass transition point of 30° C. to 90° C., the non-conductive particle has a shell portion having a glass transition point higher than that of the core portion by 10° C. or higher, a thickness of the shell portion is 0.01% to 3.0% of a number average particle diameter of the non-conductive particles, and a number average particle diameter (A) of the non-conductive particle and a number average particle diameter (B) of the binder for a porous membrane satisfy (A)>(B).

Abstract translation: 一种用于二次电池的多孔膜，包括非导电颗粒和用于多孔膜的粘合剂，其中非导电颗粒是具有核 - 壳结构的聚合物颗粒，非导电颗粒具有具有玻璃的芯部分 过渡点为30℃至90℃，非导电颗粒具有玻璃化转变点高于芯部的玻璃化转变温度高达10℃或更高的壳部，壳部的厚度为0.01 非导电性粒子的数均粒径的±3.0％，非导电性粒子的数均粒径（A）和多孔膜用粘合剂的数均粒径（B）满足（ （A）>（B）。

公开(公告)号：US09793527B2

公开(公告)日：2017-10-17

申请号：US14400932

申请日：2013-05-29

Applicant: ZEON CORPORATION

Inventor： Takuya Kaneda

IPC: H01M4/13 ,  H01M2/16 ,  H01M4/36 ,  H01M10/42 ,  H01M4/139 ,  H01M2/14 ,  H01M4/62 ,  H01M4/80 ,  H01M10/052 ,  H01M4/02

CPC classification number: H01M2/1673 ,  H01M2/145 ,  H01M2/1653 ,  H01M4/13 ,  H01M4/139 ,  H01M4/366 ,  H01M4/62 ,  H01M4/80 ,  H01M10/052 ,  H01M10/4235 ,  H01M2004/027

Abstract: A secondary battery negative electrode including a current collector, a negative electrode active material layer, and a porous membrane, wherein the negative electrode active material layer contains a negative electrode active material and a particulate negative electrode polymer, the porous membrane contains non-conductive particles and a porous membrane polymer that is a non-particulate cross-linked polymer, and the non-conductive particles are particles of a polymer that contains 50% by weight or more of a structural unit formed by polymerization of a (meth)acrylate, the polymer having a softening starting point or decomposition point of 175° C. or higher.

公开(公告)号：US11552297B2

公开(公告)日：2023-01-10

申请号：US15308418

申请日：2015-06-04

Applicant: ZEON CORPORATION

Inventor： Kenya Sonobe ,  Yusuke Adachi ,  Takuya Kaneda ,  Yasuhiro Isshiki

IPC: H01M4/62 ,  H01M10/0566 ,  H01M4/13 ,  C08L33/02 ,  C08L33/06 ,  C08L33/26 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/02

Abstract: Provided is a binder composition for lithium ion secondary battery electrode-use that reduces internal resistance of a lithium ion secondary battery while also providing the lithium ion secondary battery with excellent life characteristics. The binder composition contains a copolymer X and a solvent. The copolymer X is obtained from a monomer composition X that contains at least 20.0 mass % and no greater than 75.0 mass % of an ethylenically unsaturated carboxylic acid compound (A) composed of either or both of an ethylenically unsaturated carboxylic acid and an ethylenically unsaturated carboxylic acid salt, and at least 20.0 mass % and no greater than 75.0 mass % of a copolymerizable compound (B) that has an ethylenically unsaturated bond and a solubility of at least 7 g in 100 g of water at 20° C. The copolymer X has a degree of swelling in electrolysis solution of less than 120 mass %.

公开(公告)号：US10312521B2

公开(公告)日：2019-06-04

申请号：US15526089

申请日：2015-11-24

Applicant: ZEON CORPORATION

Inventor： Yujiro Toyoda ,  Takuya Kaneda ,  Kentaro Hayasaka

IPC: H01M4/62 ,  H01M2/16 ,  H01M4/13 ,  H01M4/04 ,  H01M10/0525

Abstract: Provided is a binder for a non-aqueous secondary battery that has excellent preservation stability and binding capacity, and that can suppress viscosity elevation of a slurry composition. The binder for a non-aqueous secondary battery contains a particulate polymer and water. The particulate polymer has a degree of swelling in an aqueous medium at pH 5 of less than a factor of 2 and has a degree of swelling in an aqueous medium at pH 8 of at least a factor of 2 and no greater than a factor of 7.

公开(公告)号：US09748547B2

公开(公告)日：2017-08-29

申请号：US14646701

申请日：2013-11-26

Applicant: ZEON CORPORATION

Inventor： Tomoya Murase ,  Yujiro Toyoda ,  Takuya Kaneda

IPC: H01M2/16 ,  H01M4/139 ,  H01M2/14 ,  H01M10/0525 ,  H01M10/052 ,  C09J133/26 ,  H01M4/62

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.