公开(公告)号：US20240079595A1

公开(公告)日：2024-03-07

申请号：US18500387

申请日：2023-11-02

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yuma ICHINOSE ,  Shigeaki YAMAZAKI ,  Chihiro HOSODA ,  Kanako ARAI ,  Toshiharu SHIMOOKA

IPC: H01M4/62 ,  C07C49/14 ,  C07C211/10 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M4/623 ,  C07C49/14 ,  C07C211/10 ,  H01M4/505 ,  H01M4/525 ,  H01M2004/028

Abstract: A positive electrode mixture containing: a polyvinylidene fluoride (A); a positive electrode active material (C) represented by the general formula (C): LiyNi1-XMxO2, wherein x is 0.01≤x≤0.7, y is 0.9≤y≤2.0, and M represents a metal atom (excluding Li and Ni); and an additive (D), wherein the polyvinylidene fluoride (A) is a combination of: (A2) a polymer containing vinylidene fluoride unit and a fluorinated monomer unit; and at least one selected from the group consisting of (A3) a polymer containing vinylidene fluoride unit and a polar group-containing monomer unit, and (A4) a polymer containing vinylidene fluoride unit, a fluorinated monomer unit, and a polar group-containing monomer unit. Also disclosed is a positive electrode famed from the positive electrode mixture and a secondary battery including the positive electrode.

公开(公告)号：US20220407075A1

公开(公告)日：2022-12-22

申请号：US17893660

申请日：2022-08-23

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takashi IGUCHI ,  Takahiro KITAHARA ,  Ryouichi YANO ,  Kazuya ASANO ,  Kanako ARAI

IPC: H01M4/62 ,  C08L27/16 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525

Abstract: Provided is a composition including a polyvinylidene fluoride (A); and a vinylidene fluoride polymer (B) excluding the polyvinylidene fluoride (A), wherein the polyvinylidene fluoride (A) comprises vinylidene fluoride unit and a pentenoic acid unit represented by formula (1): CH2═CH—(CH)2—COOY wherein Y represents at least one selected from the group consisting of an inorganic cation and an organic cation, a content of vinylidene fluoride unit of the polyvinylidene fluoride (A) is 95.0 to 99.99 mol % based on all monomer units of the polyvinylidene fluoride (A), and a content of the pentenoic acid unit of the polyvinylidene fluoride (A) is 0.01 to 5.0 mol % based on all monomer units of the polyvinylidene fluoride (A).

公开(公告)号：US20210206970A1

公开(公告)日：2021-07-08

申请号：US17058723

申请日：2019-05-23

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yoshihiro SAIGUSA ,  Hirofumi MUKAE ,  Kanako ARAI ,  Yuimi ISHIHARA ,  Haruna MATSUMOTO ,  Hideki KONO

IPC: C08L81/02

Abstract: A resin composition containing a polyarylene sulfide (a); a fluorine-containing copolymer (b); and a reactive functional group-containing compound (c), the polyarylene sulfide (a) and the fluorine-containing copolymer (b) giving a mass ratio (a):(b) of 99:1 to 40:60, the compound (c) being present in an amount of 0.1 to 35 parts by mass relative to 100 parts by mass of a total of the polyarylene sulfide (a) and the fluorine-containing copolymer (b), the resin composition having a tensile elongation at break in accordance with ASTM D 638 of 15% or more.

公开(公告)号：US20240088392A1

公开(公告)日：2024-03-14

申请号：US18178165

申请日：2023-03-03

Applicant: DAIKIN INDUSTRIES, LTD. ,  DAIKIN FLUOROCHEMICALS (CHINA) CO., LTD.

Inventor： Kanako ARAI ,  Ryouichi YANO ,  Yuki YOTSUMOTO ,  Pei Qi LIU ,  En Hao ZHANG

IPC: H01M4/62 ,  C08L27/16

CPC classification number: H01M4/623 ,  C08L27/16

Abstract: Provided is an electrode mixture including: an electrode active material; an organic solvent; a binder; and an additive; wherein the binder contains a fluorine-containing copolymer containing a vinylidene fluoride unit and a fluorinated monomer unit, provided that the vinylidene fluoride unit is excluded from the fluorinated monomer unit; the additive is a polymer material containing the following repeating unit: —[CH2—CHR]— wherein R is a chain or cyclic amide group, a nitrile group, or a substituted alkyl group formed by substituting at least one of hydrogen atoms of an alkyl group having 1 to 4 carbon atoms with a chain or cyclic amide group or a nitrile group; a content of the binder is 0.1 to 1.6 parts by mass with respect to 100 parts by mass of the electrode active material; and a content of the additive is 0.001 to 0.2 parts by mass with respect to 100 parts by mass of the electrode active material.

公开(公告)号：US20240088381A1

公开(公告)日：2024-03-14

申请号：US18503477

申请日：2023-11-07

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yuma ICHINOSE ,  Shigeaki YAMAZAKI ,  Chihiro HOSODA ,  Kanako ARAI ,  Toshiharu SHIMOOKA

IPC: H01M4/525 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/60 ,  H01M4/62 ,  H01M10/052

CPC classification number: H01M4/525 ,  H01M4/364 ,  H01M4/485 ,  H01M4/505 ,  H01M4/604 ,  H01M4/623 ,  H01M10/052 ,  H01M2004/028

Abstract: A positive electrode mixture containing a polyvinylidene fluoride (A); a fluorine-containing copolymer (B) containing vinylidene fluoride unit and tetrafluoroethylene unit; a positive electrode active material (C) represented by the general formula (C): LiyNi1-xMxO2, wherein x is 0.01≤x≤0.7, y is 0.9≤y≤2.0, and M represents a metal atom (excluding Li and Ni); and an additive (D). Also disclosed is a positive electrode formed from the positive electrode mixture and a secondary battery including the positive electrode.