公开(公告)号：US20220181633A1

公开(公告)日：2022-06-09

申请号：US17677964

申请日：2022-02-22

申请人： FUJIFILM Corporation ,  FUJIFILM Wako Pure Chemical Corporation

发明人： Kei KAWANO ,  Kazuki TAKIMOTO ,  Kaho MORI

IPC分类号： H01M4/62 ,  H01M4/134 ,  H01M4/133 ,  C08L33/10 ,  C08L33/08

摘要： The present invention relates to a binder for electricity storage devices containing a salt of a polymer containing structural units derived from (i) an ethylenically unsaturated carboxylic acid monomer and (ii) an ethylenically unsaturated monomer having at least one group selected from a hydroxy group, a dialkylamino group, an acetyl group, a sulfo group, a phosphate group, or a cyano group and neutralized with a monoamine, a polyvalent amine having an amine value of less than 21, and/or an onium hydroxide; a slurry composition and an electrode, each of which uses this binder; an electricity storage device which is provided with this electrode; and the like.

公开(公告)号：US20230261198A1

公开(公告)日：2023-08-17

申请号：US18188265

申请日：2023-03-22

申请人： FUJIFILM Wako Pure Chemical Corporation ,  FUJIFILM Corporation

发明人： Kei KAWANO ,  Kazuki TAKIMOTO ,  Kaho MORI ,  Tomonori MIMURA ,  Ikuo KINOSHITA ,  Atsushi SUGASAKI

IPC分类号： H01M4/62 ,  H01M4/139 ,  C08F220/18

CPC分类号： H01M4/622 ,  C08F220/1804 ,  H01M4/139

摘要： Provided is a secondary battery binder composition containing a water-soluble crosslinked polymer obtained by crosslinking a copolymer containing a (meth)acrylic acid component and a (meth)acrylic acid ester component as constitutional components by an aziridine compound, and water. Also provided are an electrode composition, an electrode sheet, a secondary battery, a production method for the electrode sheet, and a production method for the secondary battery.

公开(公告)号：US20220190343A1

公开(公告)日：2022-06-16

申请号：US17637650

申请日：2020-08-28

申请人： FUJIFILM WAKO PURE CHEMICAL CORPORATION

发明人： Kaho MORI ,  Tomoyuki MORI ,  Kazuki TAKIMOTO ,  Masahiro TAKANO ,  Kei KAWANO

IPC分类号： H01M4/62 ,  H01M10/0525 ,  C08F220/06 ,  C08F220/28 ,  H01G11/38 ,  H01G11/06

摘要： An object of the present invention is to provide a binder which exhibits excellent dispersibility of a conductive assistant; a slurry composition and an electrode, each of which uses this binder; and an electricity storage device which is provided with this electrode.
The present invention relates to a binder for an electricity storage device, in which a loss tangent tan δ in a linear region of an aqueous dispersion liquid of 0.5% by mass of the binder and 4.6% by mass of a conductive assistant satisfies tan δ>1 in a strain dispersion measurement under measurement conditions of a measurement temperature of 25° C. and a frequency of 1 Hz, and the conductive assistant is an acetylene black having an average particle diameter of 30 nm or more and 40 nm or less and a specific surface area of 65 m2/g or more and 70 m2/g or less; a slurry composition and an electrode, each of which uses this binder; an electricity storage device which is provided with this electrode; and the like.