公开(公告)号：US20250140862A1

公开(公告)日：2025-05-01

申请号：US18835018

申请日：2023-02-17

Applicant: ZEON CORPORATION

Inventor： Yusuke ADACHI

IPC: H01M4/62 ,  H01M4/48 ,  H01M4/525 ,  H01M10/0525

Abstract: Provided is a binder composition for a secondary battery that is capable of forming an electrode for a secondary battery that has excellent peel strength and inhibition of swelling and that can cause a secondary battery to display excellent cycle characteristics. The binder composition for a secondary battery contains a binder and water. When viscosity of the binder composition for a secondary battery under conditions of a temperature of 25° C., a solid content concentration of 1.0 mass %, and a pH of 8.0 is taken to be η1(mPa·sec) and viscosity of the binder composition for a secondary battery under conditions of a temperature of 25° C., a solid content concentration of 1.0 mass %, and a pH of 13.0 is taken to be η2(mPa·sec), a viscosity change rate, calculated by: viscosity change rate={(η2-η1)/η1}×100 [%], is not less than −45% and not more than 50%.

公开(公告)号：US20230065518A1

公开(公告)日：2023-03-02

申请号：US17760209

申请日：2021-02-03

Applicant: ZEON CORPORATION

Inventor： Yusuke ADACHI

IPC: H01M4/62 ,  H01M50/46 ,  H01M4/04 ,  H01M10/0525

Abstract: Provided is a binder composition for a secondary battery with which excellent close adherence is obtained between a substrate and a layer obtained using the binder composition and that can result in a secondary battery having good cycle characteristics. The binder composition contains a polymer and a solvent, wherein the polymer is core-shell particles including a core portion formed of a polymer (a1) and a shell portion formed of a polymer (a2). The polymer (a2) includes specific monomer units with specific amounts, wherein at least one type of monomer unit selected from a monofunctional unsaturated carboxylic acid monomer unit and a monofunctional unsaturated sulfonic acid monomer unit is not less than 0.1 mol and not more than 15,000 mol relative to 1 mol of a monomer unit of a monomer including at least two vinyl functional groups.

公开(公告)号：US20200295372A1

公开(公告)日：2020-09-17

申请号：US16650382

申请日：2018-09-27

Applicant: ZEON CORPORATION

Inventor： Yusuke ADACHI ,  Kenya SONOBE ,  Yasuhiro ISSHIKI ,  Ai MASUDA

IPC: H01M4/62 ,  C08F220/06 ,  C08F220/56 ,  C08L33/00 ,  C08L51/04

Abstract: Provided is a binder composition for a secondary battery with which a slurry composition for a secondary battery having low foaming can be produced, and that can improve handleability of a functional layer or electrode layer formed using the produced slurry composition for a secondary battery. The binder composition for a secondary battery contains a polymer A and a solvent. The polymer A includes an amide group-containing monomer unit and a carboxylic acid ester-containing monomer unit including an alkyl chain having a carbon number of not less than 2 and not more than 9. Content of the carboxylic acid ester-containing monomer unit in the polymer A is not less than 12 mass % and not more than 28 mass %.

公开(公告)号：US20230133447A1

公开(公告)日：2023-05-04

申请号：US17906260

申请日：2021-03-22

Applicant: ZEON CORPORATION

Inventor： Hiroki OSHIMA ,  Yusuke ADACHI

IPC: H01M4/62 ,  H01M10/0525

Abstract: Provided is a binder composition that can result in high peel strength in an electrode and excellent cycle characteristics in a secondary battery. A binder composition for a non-aqueous secondary battery contains a water-soluble polymer (A) and a water-soluble polymer (B). The water-soluble polymer (A) is formed of one or more types of units selected from the group consisting of unsaturated carboxylic acid monomer units, unsaturated carboxylic acid amide monomer units, unsaturated carboxylic acid ester monomer units, hydroxyl group-containing vinyl monomer units, and vinyl alcohol structural units, and includes a predetermined amount of unsaturated carboxylic acid monomer units. The water-soluble polymer (B) is formed of one or more types of ethylenically unsaturated monomer units, and includes a predetermined amount of sulfo group-containing aromatic vinyl monomer units. The weight-average molecular weight of the water-soluble polymer (A) is 4 times or more the weight-average molecular weight of the water-soluble polymer (B).

公开(公告)号：US20240421310A1

公开(公告)日：2024-12-19

申请号：US18702329

申请日：2022-10-11

Applicant: ZEON CORPORATION

Inventor： Tomohiro MIWATA ,  Yusuke ADACHI

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/04 ,  H01M10/0525

Abstract: A binder composition for a non-aqueous secondary battery negative electrode contains a particulate polymer and water. The particulate polymer is formed of a polymer including an ethylenically unsaturated carboxylic acid monomer unit, an aromatic vinyl monomer unit, and an alkylene structural unit. A binder film formed using the binder composition for a non-aqueous secondary battery negative electrode displays a maximum displacement of 30 μm or less when the binder film compressed to a maximum load of 20 mN at a loading rate of 0.2975 mN/s using a micro compression tester.

公开(公告)号：US20220336815A1

公开(公告)日：2022-10-20

申请号：US17753835

申请日：2020-09-14

Applicant: ZEON CORPORATION

Inventor： Hiroki OSHIMA ,  Yusuke ADACHI

IPC: H01M4/62 ,  C08L29/04

Abstract: Provided is a binder composition for a secondary battery with which it is possible to produce a slurry composition for a secondary battery electrode that has excellent preservation stability and can produce an electrode having excellent peel strength. The binder composition for a secondary battery contains a water-soluble polymer and polyvalent metal ions. The water-soluble polymer includes a vinyl alcohol structural unit and a carboxy group-containing monomer unit. The content of the polyvalent metal ions is not less than 0.1 mass ppm and not more than 10,000 mass ppm relative to the water-soluble polymer.

公开(公告)号：US20180258202A1

公开(公告)日：2018-09-13

申请号：US15760771

申请日：2016-09-23

Applicant: ZEON CORPORATION

Inventor： Kenya SONOBE ,  Yusuke ADACHI

IPC: C08F20/58 ,  H01M4/139 ,  H01M4/62 ,  C08F20/64 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/88

CPC classification number: C08F20/58 ,  C08F20/64 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/139 ,  H01M4/622 ,  H01M4/623 ,  H01M4/8828 ,  H01M10/0525

Abstract: A binder composition for a non-aqueous secondary battery electrode contains a water-soluble polymer including, in a proportion of at least 0.1 mass % and not more than 20 mass %, a monomer unit derived from a monomer represented by general formula (1): CH2═C(R1)—NH—R2—OH (R1 is hydrogen or an alkyl group and R2 is (CHR3)n(O(CHR3)m)l [n=1 to 10; m=1 to 4; l=0 to 3; and R3 is hydrogen or an alkyl group having a carbon number of 1 to 4]).

公开(公告)号：US20170062828A1

公开(公告)日：2017-03-02

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 ,  H01M4/587 ,  H01M4/133 ,  H01M4/134 ,  C08L33/06 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  C08L33/26 ,  C08L33/02 ,  H01M10/0525 ,  H01M4/38

CPC classification number: H01M4/622 ,  C08L33/02 ,  C08L33/066 ,  C08L33/26 ,  C08L2201/54 ,  C08L2203/20 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/139 ,  H01M4/386 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M4/623 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2010/4292

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 %.

Abstract translation: 本发明提供了一种锂离子二次电池用电极用粘合剂组合物，其还能够提供锂离子二次电池的内部电阻，同时为锂离子二次电池提供优异的寿命特性。 粘合剂组合物含有共聚物X和溶剂。 共聚物X由含有至少20.0质量％且不大于75.0质量％的烯属不饱和羧酸化合物（A）的单体组合物X获得，所述烯键式不饱和羧酸化合物（A）由烯键式不饱和羧酸和烯键式不饱和羧酸 和20质量％的至少20.0质量％且不大于75.0质量％的在20℃下在100g水中具有烯属不饱和键和至少7克的溶解度的可共聚化合物（B）。共聚物X 电解液中的溶胀度小于120质量％。

公开(公告)号：US20240322176A1

公开(公告)日：2024-09-26

申请号：US18577699

申请日：2022-07-01

Applicant: ZEON CORPORATION

Inventor： Yusuke ADACHI ,  Tomohiro MIWATA

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/133 ,  H01M4/583

CPC classification number: H01M4/622 ,  H01M4/133 ,  H01M4/583 ,  H01M2004/027

Abstract: Provided is a binder composition for a non-aqueous secondary battery negative electrode capable of producing a slurry composition having suppressed foaming and forming a negative electrode mixed material layer having excellent resistance to peeling. The binder composition for a non-aqueous secondary battery negative electrode contains a particulate binder and water. The particulate binder includes a polymer including an ethylenically unsaturated carboxylic acid monomer unit, an aromatic vinyl monomer unit, and an aliphatic conjugated diene monomer unit. When a film of the particulate binder is formed, the film has a degree of swelling of insoluble content in tetrahydrofuran of 300 mass % to 1500 mass % and an amount of insoluble content in tetrahydrofuran of 85 mass % to 99 mass %. A ratio of viscosity at pH 8.0 relative to viscosity at pH 3.0 of the binder composition when set to a solid content concentration of 30 mass % is 1.5 to 200.

公开(公告)号：US20240063395A1

公开(公告)日：2024-02-22

申请号：US18260334

申请日：2022-01-07

Applicant: ZEON CORPORATION

Inventor： Yusuke ADACHI ,  Kenya SONOBE

IPC: H01M4/62 ,  H01M4/38

CPC classification number: H01M4/625 ,  H01M4/386

Abstract: Provided is a conductive material paste for an electrochemical device electrode with which it is possible to produce a slurry composition that has excellent viscosity stability and can cause an electrochemical device to display excellent cycle characteristics. The conductive material paste contains a fibrous conductive carbon, a triazine skeleton-containing compound, a water-soluble polymer, and water. The amount of the triazine skeleton-containing compound is not less than 1 part by mass and not more than 50 parts by mass per 100 parts by mass of the fibrous conductive carbon, and the amount of the water-soluble polymer is not less than 1 part by mass and not more than 50 parts by mass per 100 parts by mass of the fibrous conductive carbon.