公开(公告)号：US20180301704A1

公开(公告)日：2018-10-18

申请号：US15569502

申请日：2016-06-01

Applicant: SHOWA DENKO K.K.

Inventor： Junya UCHIYASHIKI ,  Mitsuru HANASAKI ,  Tomonori KURATA

IPC: H01M4/62 ,  C08F20/26 ,  H01M10/0525 ,  C07F9/11 ,  C07F9/09

Abstract: A binder composition for nonaqueous battery electrodes essentially contains (A) an ethylenically unsaturated monomer and (B) a surfactant, and further satisfies any two or more conditions of the following (I) to (III): (I) (A) the ethylenically unsaturated monomer includes (a) a phosphoric acid group-containing ethylenically unsaturated monomer; (II) (B) the surfactant comprises (b) a phosphoric acid group-containing surfactant; and (III) the composition including (C) a neutralizing agent containing an alkali metal compound and/or an alkali earth metal compound.

公开(公告)号：US20190020035A1

公开(公告)日：2019-01-17

申请号：US16068824

申请日：2016-12-28

Applicant: SHOWA DENKO K.K.

Inventor： Mitsuru HANASAKI ,  Tomonori KURATA ,  Junya UCHIYASHIKI ,  Yasuhiro NAKAGAWA

IPC: H01M4/62 ,  C08F212/08 ,  C08F212/34 ,  C08F236/06 ,  H01M4/04 ,  H01M4/139 ,  H01M10/0525

Abstract: An aqueous binder composition for a secondary battery electrode containing a silane coupling agent without ethylenically unsaturated bonds, a resin which is a polymer of at least one kind of ethylenically unsaturated monomers, a resin which is a polymer of at least one kind of ethylenically unsaturated monomer, and at least one kind of solvent selected from water and a hydrophilic solvent. The amount of silane coupling agent is from 0.5 to 9 parts by mass based on 100 parts by mass of ethylenically unsaturated monomer. The pH of the composition is 2.5 to 8.0. Also disclosed is a binder obtained by curing the aqueous binder composition, a slurry containing the aqueous binder composition and an active material, a secondary battery electrode obtained by curing the slurry, and a secondary battery including the secondary battery electrode.

公开(公告)号：US20160248095A1

公开(公告)日：2016-08-25

申请号：US15024444

申请日：2014-06-20

Applicant: SHOWA DENKO K.K.

Inventor： Tomonori KURATA ,  Mitsuru HANASAKI ,  Junya UCHIYASHIKI

IPC: H01M4/62 ,  H01M4/13

CPC classification number: H01M4/622 ,  C08L1/02 ,  C08L71/02 ,  H01M4/13 ,  H01M4/137 ,  H01M4/1399

Abstract: A binder composition for nonaqueous battery electrodes is prepared by adding a small amount of an acetylene glycol compound to an aqueous polymer emulsion obtained by emulsion polymerization of a monomer mixture comprising from 15 to 70% by mass of styrene (a), from 20 to 80% by mass of an ethylenically unsaturated carboxylate (b), from 1 to 10% by mass of an ethylenically unsaturated carboxylic acid (c), from 0.1 to 5% by mass of a crosslinkable ethylenically unsaturated monomer (d), and from 0 to 20% by mass of another monoethylenically unsaturated monomer (e). When the above binder composition is used, an active material is not peeled off in the step of cutting a collector even when a small amount of the binder is used, and a nonaqueous battery excellent in a charge-discharge cycle property can be produced.

Abstract translation: 通过将含有15〜70质量％的苯乙烯（a）的单体混合物的乳液聚合得到的水性聚合物乳液中添加少量的乙炔二醇化合物20〜80，制备非水电极电极用粘合剂组合物 质量％的烯属不饱和羧酸酯（b），1〜10质量％的烯属不饱和羧酸（c），0.1〜5质量％的交联性烯属不饱和单体（d），0〜 20质量％的另一单烯属不饱和单体（e）。 当使用上述粘合剂组合物时，即使使用少量的粘合剂，在切割集电体的步骤中也不会剥离活性材料，并且可以产生充放电循环特性优异的非水电池。