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：US20230081610A1

公开(公告)日：2023-03-16

申请号：US17904289

申请日：2020-12-28

Applicant: ZEON CORPORATION

Inventor： Akihiko MIYAZAKI ,  Yasuhiro ISSHIKI ,  Shiho MOSAKI

IPC: H01M50/494 ,  H01M50/411 ,  H01M50/242

Abstract: Provided is an intercell spacer that can maintain intercell distance even in a situation in which a cell has expanded inside a battery module at abnormally high temperature. The intercell spacer is arranged between battery cells that are adjacent to each other and includes a heat-resistant anti-compression portion having a Young's modulus of not less than a specific value at a specific temperature in a direction in which the battery cells are adjacent.

公开(公告)号：US20210057725A1

公开(公告)日：2021-02-25

申请号：US16967134

申请日：2019-02-19

Applicant: ZEON CORPORATION

Inventor： Yasuhiro ISSHIKI

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/587

Abstract: Provided is a slurry composition for a lithium ion secondary battery that can cause an electrode for a lithium ion secondary battery to display excellent adhesiveness (peel strength) and flexibility (pliability) and that can cause a lithium ion secondary battery to display excellent rate characteristics and cycle characteristics. The slurry composition for a lithium ion secondary battery contains a silicon compound and a binder. The silicon compound includes either or both of Li2SiO3 and Li4SiO4. The binder includes a water-soluble polymer that includes either or both of an ethylenically unsaturated carboxylic acid monomer unit (A) and an alkali metal salt thereof, and that includes a cross-linkable monomer unit (B). A 1 mass % aqueous solution of the water-soluble polymer has a viscosity of 1,000 mPa·s or less. The slurry composition for a lithium ion secondary battery has a pH of not lower than 9 and not higher than 12.

公开(公告)号：US20230082937A1

公开(公告)日：2023-03-16

申请号：US17904374

申请日：2021-02-16

Applicant: ZEON CORPORATION

Inventor： Yasuhiro AKITA ,  Yasuhiro ISSHIKI

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/525 ,  H01M4/131 ,  H01G11/38

Abstract: A composite particle for an electrochemical device contains an electrode active material, a conductive material, a binder, and 0.1 parts by mass or more and 5 parts by mass or less of a thermally decomposable foaming agent per 100 parts by mass of the composite particle. When a cross section of the composite particle perpendicular to the long axis of the composite particle, and including the midpoint of the long axis is subjected to a map analysis using an electron beam microanalyzer, the value of the ratio of the integrated values of the detection intensities of carbon atoms contained outside and inside the range of the circle the center of which is coincides with the midpoint of the long axis and the diameter of which is one half of the length of the long axis is 4 or more and 15 or less.

公开(公告)号：US20170244095A1

公开(公告)日：2017-08-24

申请号：US15519161

申请日：2015-10-30

Applicant: ZEON CORPORATION

Inventor： Kenya SONOBE ,  Yasuhiro ISSHIKI ,  Masanori SHIBUYA

IPC: H01M4/133 ,  C08F220/06 ,  C09D5/24 ,  C09D133/02 ,  C09D133/26 ,  H01M4/131 ,  H01M4/36 ,  H01M4/525 ,  H01M4/48 ,  H01M4/587 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2/16 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0567 ,  C08F220/56

CPC classification number: H01M4/133 ,  C08F220/06 ,  C08F220/56 ,  C08F222/02 ,  C08K3/04 ,  C08K3/34 ,  C08K2201/001 ,  C08L33/02 ,  C08L33/26 ,  C09D5/24 ,  C09D133/02 ,  C09D133/26 ,  H01M2/1653 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/364 ,  H01M4/483 ,  H01M4/525 ,  H01M4/587 ,  H01M4/62 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0587 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/0037 ,  C08F2222/1013 ,  C08F220/14 ,  C08F2220/585

Abstract: A material for slurry composition-use for example is a paste composition including a negative electrode active material that contains a silicon-based negative electrode active material in an amount of at least 30 mass % and a water-soluble polymer in an amount of at least 3 parts by mass and less than 500 parts by mass per 100 parts by mass of the silicon-based negative electrode active material. The water-soluble polymer includes at least 20.0 mass % and no greater than 79.5 mass % of structural units derived from an ethylenically unsaturated carboxylic acid compound (A) and at least 20.0 mass % and no greater than 79.5 mass % of structural units derived from a copolymerizable compound (B) that has an ethylenically unsaturated bond and a water solubility of at least 7 g/100 g at 20° C., and the water-soluble polymer has a degree of swelling in electrolysis solution of less than 120%.

公开(公告)号：US20240421294A1

公开(公告)日：2024-12-19

申请号：US18702331

申请日：2022-11-11

Applicant: ZEON CORPORATION

Inventor： Yukie ITO ,  Yasuhiro ISSHIKI

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/1391 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525

Abstract: Composite particles contain electrode active material particles, a conductive material, and a binder. The electrode active material particles have a number-based median diameter of primary particles of not less than 0.2 μm and not more than 4.0 μm. The composite particles have a D50 of not less than 20 μm and not more than 250 μm and a D90/D10 of not less than 2 and not more than 30 in a volume-based particle diameter distribution. The proportion constituted by carbon atoms at surfaces of the composite particles is not less than 20 mass % and not more than 70 mass %.

公开(公告)号：US20230138078A1

公开(公告)日：2023-05-04

申请号：US17904225

申请日：2021-02-19

Applicant: ZEON CORPORATION

Inventor： Yasuhiro ISSHIKI

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

Abstract: A composite particle for an electrochemical element including an electrode active material and a granular polymer, wherein the granular polymer is composed of a graft polymer, the graft polymer has a molecular structure which includes a specific backbone portion and a graft portion bonded to the backbone portion, the graft portion being a hydrophilic graft chain, a content ratio of the graft portion in the graft polymer is 1 part by weight or more and 40 parts by weight or less relative to 100 parts by weight of the backbone portion, and an angle of repose of the composite particle is 20° to 40°. Also provided are a producing method of the composite particle, an electrode for an electrochemical element including the composite particle, and an electrochemical element including the same.

公开(公告)号：US20220037632A1

公开(公告)日：2022-02-03

申请号：US17279758

申请日：2019-10-03

Applicant: ZEON CORPORATION

Inventor： Kenya SONOBE ,  Yasuhiro ISSHIKI ,  Maki MESUDA

IPC: H01M4/04 ,  H01M4/36

Abstract: A conductive paste for an electrode mixed material layer has a water content of 1,000 ppm or less. The paste contains a conductive additive, not less than 3 parts by mass and not more than 200 parts by mass of a polymer per 100 parts by mass of the conductive additive, and not less than 12 parts by mass and not more than 350 parts by mass of expandable particles per 100 parts by mass of the conductive additive. The polymer includes at least one functional group selected from the group consisting of a carboxyl group, a hydroxyl group, an amino group, an epoxy group, an oxazoline group, a sulfo group, a nitrile group, an ester group, and an amide group. The expandable particles have an initial thermal decomposition temperature of not lower than 120° C. and not higher than 400° C.

公开(公告)号：US20200220174A1

公开(公告)日：2020-07-09

申请号：US16622535

申请日：2018-06-29

Applicant: ZEON CORPORATION

Inventor： Yasuhiro ISSHIKI ,  Kenya SONOBE ,  Kazuki ASAI

IPC: H01M4/62 ,  H01M2/16 ,  H01G11/38 ,  C08K5/16 ,  C08L101/02

Abstract: Provided is a binder composition for an electrochemical device that has excellent binding capacity and is capable of forming a functional layer that can improve rate characteristics and cycle characteristics of an electrochemical device (for example, a secondary battery). The binder composition for an electrochemical device contains a binder and an organonitrogen compound. The binder is a polymer including at least one functional group selected from the group consisting of a carboxyl group, a hydroxyl group, a cyano group, an amino group, an epoxy group, an oxazoline group, an isocyanate group, and a sulfo group. The organonitrogen compound includes at least one functional group selected from the group consisting of an azo group, a hydrazino group, a hydrazo group, and a nitroso group, has a 5% mass loss temperature of 140° C. or higher, and has a molecular weight of not less than 80 and not more than 1,000.

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％。