公开(公告)号：US10003077B2

公开(公告)日：2018-06-19

申请号：US15032693

申请日：2014-10-28

Applicant: OSAKA SODA CO., LTD.

Inventor： Takashi Matsuo ,  Tomoyuki Yano ,  Yasushi Miki ,  Katsuhito Miura

IPC: H01M4/62 ,  H01G11/38 ,  H01M4/131 ,  C08F220/28 ,  C09J133/12 ,  C09J133/14 ,  H01M2/16 ,  H01M4/38 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0585 ,  H01M10/052 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/02

CPC classification number: H01M4/622 ,  C08F220/28 ,  C09J133/12 ,  C09J133/14 ,  H01G11/38 ,  H01M2/1653 ,  H01M2/1686 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/382 ,  H01M4/625 ,  H01M4/661 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0585 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/0037 ,  Y02E60/13 ,  Y02T10/7022 ,  C08F2220/287 ,  C08F220/14 ,  C08F218/08 ,  C08F220/06 ,  C08F2222/1026

Abstract: Disclosed is a battery electrode binder containing a polymer including (1) a constituent unit derived from a (meth)acrylate monomer (A) having a hydroxyl group, (2) a constituent unit derived from a vinyl ester monomer (B), and (3) a constituent unit derived from a polyfunctional (meth)acrylate monomer (C). Using the binder, an electrode is produced and adopted in a battery such as a lithium ion secondary battery. Obtained are: an aqueous binder that has a low environmental impact, has high adhesiveness, and in particular does not cause oxidative degradation in the electrode environment; and a battery and electrode using the binder.

公开(公告)号：US10014525B2

公开(公告)日：2018-07-03

申请号：US14762982

申请日：2014-01-24

Applicant: OSAKA SODA CO., LTD.

Inventor： Takashi Matsuo ,  Tomoyuki Yano ,  Yasushi Miki ,  Katsuhito Miura

IPC: H01M4/62 ,  C08F290/06 ,  C08F222/30 ,  C08F220/28 ,  H01M10/0525

CPC classification number: H01M4/622 ,  C08F220/28 ,  C08F222/30 ,  C08F290/062 ,  H01M10/0525 ,  H01M2220/10 ,  H01M2220/20 ,  H01M2220/30 ,  C08F2220/287 ,  C08F220/44 ,  C08F2222/1026 ,  C08F220/06 ,  C08F2220/286 ,  C08F222/02

Abstract: This binder for battery electrodes is characterized by containing a polymer including: (A) a structural unit represented by general formula (1) and derived from a monomer having a hydroxyl group (in the formula, R1 is a hydrogen or a C1-C4 straight-chain or branched alkyl group, R2 and R3 are each a hydrogen or a C1-C4 straight-chained or branched alkyl group, and n is an integer of 2-30); (B) a structural unit derived from an ethylenically unsaturated monomer having at least one functional group selected from the group consisting of a difunctional carboxylic acid group, a nitrile group and a ketone group; and (C) a structural unit derived from a polyfunctional (meth)acrylate monomer having at most five functional groups.

公开(公告)号：US10483545B2

公开(公告)日：2019-11-19

申请号：US15122673

申请日：2015-03-03

Applicant: OSAKA SODA CO., LTD.

Inventor： Tomoyuki Yano ,  Miwa Nakamura ,  Takashi Matsuo ,  Yasushi Miki ,  Katsuhito Miura

IPC: H01M4/62 ,  H01G9/042 ,  H01M10/0525 ,  C08F220/18 ,  C08F220/28 ,  C08F290/06 ,  C08F220/14 ,  H01M10/052

Abstract: Provided is a binder for battery electrodes which includes a polymer including: structural units (1) derived from a (meth)acrylate monomer (A) having a hydroxyl group; structural units (2) derived from a polyfunctional (meth)acrylate monomer (B); and structural units (3) derived from a reactive surfactant (C). This binder is used to prepare electrodes, and produce batteries such as lithium ion secondary batteries. Provided are: an aqueous binder which has a low environmental impact, exhibits excellent binding properties, and, notably, does not cause oxidation degradation under an electrode environment; and an electrode and a battery which use said binder.