公开(公告)号：US20210083262A1

公开(公告)日：2021-03-18

申请号：US17020823

申请日：2020-09-15

Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.

Inventor： Katsuhiko IKEYATSU ,  Shinji OZAKI ,  Hideki GODA

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

Abstract: Provided are a binder aqueous solution for a lithium-ion battery, a slurry for a lithium-ion battery negative electrode, a negative electrode for a lithium-ion battery, and a lithium-ion battery. The binder aqueous solution for a lithium-ion battery contains a water-soluble poly(meth)acrylamide (A). The water-soluble poly(meth)acrylamide (A) is a polymer of a monomer group containing, with respect to 100 mol % of the monomer group, 30 mol % to 95 mol % of a (meth)acrylamide group-containing compound (a), and 5 mol % to 40 mol % of an alkoxyalkyl (meth)acrylate (b) represented by the following general formula (1), CH2═C(R1)—CO—O—R2—O—R3  (1) (in which R1 is a hydrogen atom or a methyl group, R2 is an alkylene group having 1 to 4 carbon atoms, R3 is an alkyl group having 1 to 4 carbon atoms, and a total number of carbon atoms of the groups R1, R2 and R3 is 5 or less.)

公开(公告)号：US20210305574A1

公开(公告)日：2021-09-30

申请号：US17214939

申请日：2021-03-29

Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.

Inventor： Shinji OZAKI ,  Naoki SASAGAWA ,  Hideki GODA

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

Abstract: Provided are a binder aqueous solution for a lithium ion battery, a negative electrode slurry for a lithium ion battery, a negative electrode for a lithium ion battery, and a lithium ion battery. The binder aqueous solution for a lithium ion battery has a pH of 5 or higher and contains: a water-soluble polymer (A) that is a polymer of a monomer group containing, with respect to 100 mol % of the monomer group, 15 mol % to 99.9 mol % of an unsaturated carboxylic acid or an inorganic salt thereof, and that has a glass transition temperature of 110° C. or lower; and a hydrolyzed partial condensate (B) of an amino group-containing trialkoxysilane.

公开(公告)号：US20210280872A1

公开(公告)日：2021-09-09

申请号：US17167088

申请日：2021-02-04

Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.

Inventor： Katsuhiko IKEYATSU ,  Hideki GODA

IPC: H01M4/62 ,  H01M10/0525

Abstract: Provided are a binder aqueous solution for a lithium-ion battery electrode, a slurry for a lithium-ion battery negative electrode, a negative electrode for a lithium-ion battery, and a lithium-ion battery. The binder aqueous solution for a lithium-ion battery electrode contains an acidic group-containing water-soluble polymer (A) and an amino group-containing water-soluble polymer (B). The acidic group-containing water-soluble polymer (A) is a polymer of a monomer group containing, with respect to 100 mol % of the monomer group, 30 mol % to 90 mol % of a (meth)acrylamide group-containing compound (a), 3 mol % to 20 mol % of an unsaturated organic acid (b), and 5 mol % to 40 mol % of an alkali metal or alkaline earth metal salt (c) of the unsaturated organic acid. A 1% by mass aqueous solution of the amino group-containing water-soluble polymer (B) has a pH of 9 or higher.

公开(公告)号：US20210075019A1

公开(公告)日：2021-03-11

申请号：US17009780

申请日：2020-09-02

Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.

Inventor： Katsuya OKUBO ,  Hideki GODA ,  Naoki SASAGAWA ,  Satoru AOYAMA

IPC: H01M4/62 ,  H01M4/88 ,  H01M4/13 ,  H01M10/0525

Abstract: Provided are a binder aqueous solution for a lithium-ion battery electrode, a slurry for a lithium-ion battery electrode, a lithium-ion battery electrode, and a lithium-ion battery. The binder aqueous solution for a lithium-ion battery electrode contains a water-soluble polymer (A). The water-soluble polymer (A) is a polymer of a monomer group containing, with respect to 100 mol % of the monomer group, 5 mol % to 80 mol % of a hydroxyl group-containing vinyl ether (a). In one embodiment, the monomer group contains 20 mol % to 95 mol % of a (meth)acrylamide group-containing compound (b).

公开(公告)号：US20210151766A1

公开(公告)日：2021-05-20

申请号：US17095750

申请日：2020-11-12

Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.

Inventor： Shinji OZAKI ,  Katsuhiko IKEYATSU ,  Katsuya OKUBO ,  Satoru AOYAMA ,  Naoki SASAGAWA ,  Hideki GODA

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/13 ,  C08L33/08 ,  C08L77/06 ,  C08L9/06 ,  C08L1/28

Abstract: To provide a conductive carbon material dispersing agent for a lithium ion battery, a slurry for a lithium ion battery electrode, an electrode for a lithium ion battery, and a lithium ion battery
The disclosure provides a conductive carbon material dispersing agent for a lithium ion battery including a water-soluble poly(meth)acrylamide (A-1) which contains 2 to 60 mol % of structural units derived from a (meth)acrylamide group-containing compound (a) and 10 to 70 mol % of structural units derived from an unsaturated sulfonic acid or salts thereof (b), and which has a weight average molecular weight of 10,000 to 300,000.

公开(公告)号：US20210057748A1

公开(公告)日：2021-02-25

申请号：US16999030

申请日：2020-08-20

Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.

Inventor： Shinji OZAKI ,  Hideki GODA ,  Naoki SASAGAWA ,  Satoru AOYAMA ,  Katsuya OKUBO ,  Katsuhiko IKEYATSU

IPC: H01M4/62 ,  H01M10/0525 ,  C08F220/56 ,  C08F220/48 ,  C08F220/28 ,  C08F220/58 ,  H01M4/36 ,  H01M4/48 ,  H01M4/587

Abstract: Provided are a thermally crosslinkable binder aqueous solution for a lithium-ion battery, a thermally crosslinkable slurry for a lithium-ion battery negative electrode, a negative electrode for a lithium-ion battery, and a lithium-ion battery. The thermally crosslinkable binder aqueous solution for a lithium-ion battery contains a water-soluble poly(meth)acrylamide (A) and a divalent or higher valent metal ion. The water-soluble poly(meth)acrylamide (A) contains 2 mol % to 60 mol % of a constituent unit derived from a (meth)acrylamide group-containing compound (a), and 10 mol % to 50 mol % of a constituent unit derived from one or more unsaturated acids selected from the group consisting of unsaturated carboxylic acids and unsaturated sulfonic acids or an inorganic salt thereof (b). The divalent or higher valent metal ion is contained in an amount of 0.5 mol % to 30 mol % with respect to 100 mol % of an acid group contained in the component (b).