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公开(公告)号：US11658302B2
公开(公告)日：2023-05-23
申请号：US17095750
申请日：2020-11-12
发明人： Shinji Ozaki , Katsuhiko Ikeyatsu , Katsuya Okubo , Satoru Aoyama , Naoki Sasagawa , Hideki Goda
CPC分类号： H01M4/625 , C08L1/286 , C08L9/06 , C08L33/08 , C08L77/06 , H01M4/13 , H01M10/0525 , C08L2205/025 , C08L2205/03
摘要： 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：US11637288B2
公开(公告)日：2023-04-25
申请号：US16902279
申请日：2020-06-16
发明人： Hideki Goda , Naoki Sasagawa , Shinji Ozaki , Satoru Aoyama , Katsuya Okubo , Katsuhiko Ikeyatsu
IPC分类号： H01M4/62 , H01M4/04 , H01M4/139 , H01M10/0525 , H01M10/0585 , C08F220/06 , C08F220/56 , C08F220/28 , H01M4/02
摘要： 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, a lithium-ion battery negative electrode material, as well as a lithium-ion battery and a method for producing the same. The present disclosure provides a thermally crosslinkable binder aqueous solution for a lithium-ion battery, containing water-soluble poly(meth)acrylamide (A) and having a pH of 5 to 7, wherein the water-soluble poly(meth)acrylamide (A) is a polymer of a monomer group containing, with respect to 100 mol % of the monomer group, 2 mol % to 60 mol % of a (meth)acrylamide group-containing compound (a), 10 mol % to 50 mol % of one or more unsaturated acids selected from the group consisting of unsaturated carboxylic acids and unsaturated sulfonic acids or an inorganic salt thereof (b), and 15 mol % to 78 mol % of hydroxyalkyl(meth)acrylate (c) having a hydroxyalkyl group having 2 to 4 carbon atoms.
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公开(公告)号：US11962010B2
公开(公告)日：2024-04-16
申请号：US17009780
申请日：2020-09-02
发明人： Katsuya Okubo , Hideki Goda , Naoki Sasagawa , Satoru Aoyama
IPC分类号： H01M4/62 , H01M4/13 , H01M4/88 , H01M10/05 , H01M10/0525
CPC分类号： H01M4/622 , H01M4/13 , H01M4/8828 , H01M10/0525
摘要： 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).
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公开(公告)号：US11646421B2
公开(公告)日：2023-05-09
申请号：US16999030
申请日：2020-08-20
发明人： Shinji Ozaki , Hideki Goda , Naoki Sasagawa , Satoru Aoyama , Katsuya Okubo , Katsuhiko Ikeyatsu
IPC分类号： H01M4/62 , C08F220/28 , C08F220/58 , C08F220/48 , C08F220/56 , H01M4/36 , H01M4/48 , H01M4/587 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/622 , C08F220/281 , C08F220/48 , C08F220/56 , C08F220/585 , H01M4/364 , H01M4/483 , H01M4/587 , H01M10/0525 , C08F2800/10 , H01M2004/027
摘要： 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).
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