公开(公告)号：US20250096327A1

公开(公告)日：2025-03-20

申请号：US18969630

申请日：2024-12-05

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tomoya HIDAKA ,  Junpei TERADA ,  Shigeaki YAMAZAKI ,  Toshiharu SHIMOOKA ,  Mariko FUJI ,  Kae FUJIWARA

IPC: H01M10/0569 ,  H01M4/02 ,  H01M4/38 ,  H01M4/583 ,  H01M10/0525

Abstract: Provided are an electrolytic solution that can allow a secondary battery comprising a silicon negative electrode to be improved in life and suppressed in an increase in resistance, and a secondary battery using the electrolytic solution. An electrolytic solution for use in a battery comprising an electrode having a negative electrode material containing a silicon element and a carbon element, wherein the electrolytic solution comprises less than 10% by mass of a fluorinated ether represented by the following general formula (1): HCF2CF2—O—R (1), wherein R is a fluorinated alkyl group.

公开(公告)号：US20230178802A1

公开(公告)日：2023-06-08

申请号：US17922554

申请日：2021-04-28

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Akinori TANI ,  Junpei TERADA ,  Takaya YAMADA ,  Kae FUJIWARA

IPC: H01M10/0565 ,  C08F214/22 ,  C08L27/16 ,  C08K5/43 ,  H01M10/0525

CPC classification number: H01M10/0565 ,  C08F214/22 ,  C08L27/16 ,  C08K5/43 ,  H01M10/0525 ,  C08F2800/10 ,  H01M2300/0082 ,  H01G11/56

Abstract: Provided are a composite that can be suitably used as an electrolyte in polymer-based solid-state batteries, and various electrochemical devices using the composite. The composite includes a fluorine-containing elastomer and an alkali metal salt as essential components, wherein the fluorine-containing elastomer is an amorphous fluorine-containing elastomer having a glass transition temperature of 25° C. or less, and the composite has a volatile content of 0.1 mass % or less with respect to the entire composite.

公开(公告)号：US20230231182A1

公开(公告)日：2023-07-20

申请号：US18176184

申请日：2023-02-28

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takaya YAMADA ,  Masahiko YAMADA ,  Shigeaki YAMAZAKI ,  Junpei TERADA ,  Kae FUJIWARA ,  Kentarou HIRAGA ,  Xianwei SUI

IPC: H01M10/056

CPC classification number: H01M10/056 ,  H01M2300/0091

Abstract: An all-solid-state secondary battery mixture, a secondary battery electrode mixture sheet containing the all-solid-state secondary battery mixture, and a secondary battery including the all-solid-state secondary battery sheet. Also provided is a method for producing an all-solid-state secondary battery sheet containing a polytetrafluoroethylene resin having a fine fiber structure. The all-solid-state secondary battery mixture includes a solid-state electrolyte and a binder. The binder is a polytetrafluoroethylene resin, and the polytetrafluoroethylene resin has a fibrous structure with a fibril diameter (median value) of 70 nm or less. In addition, the all-solid-state secondary battery mixture sheet contains the all-solid-state secondary battery mixture.

公开(公告)号：US20220271293A1

公开(公告)日：2022-08-25

申请号：US17629012

申请日：2020-07-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takaya YAMADA ,  Junpei TERADA ,  Takahiro FURUTANI ,  Kae FUJIWARA ,  Akinori TANI

IPC: H01M4/62 ,  H01M10/0562 ,  H01M10/0525 ,  H01M4/587 ,  H01M4/38 ,  H01M10/0585 ,  C08F214/20

Abstract: A binder and a slurry suitable for use in the production of an electrode in a sulfide-based solid-state battery. The binder contains sulfide-based solid electrolyte particles, and is a fluorine-containing elastomer in which resin end functional groups satisfy: 0.01≤([—CH2OH]+[—COOH])/([—CH3]+[—CF2H]+[—CH2OH]+[—CH2I]+[—OC(O)RH]+[—COOH]≤0.25 where R represents an alkyl group with 1 to 20 carbon atoms. Also disclosed is an electrode including an electrode active material layer formed using the slurry and a lithium-ion secondary solid state battery including the electrode.

公开(公告)号：US20220271294A1

公开(公告)日：2022-08-25

申请号：US17629168

申请日：2020-07-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takaya YAMADA ,  Junpei TERADA ,  Takahiro FURUTANI ,  Akinori TANI ,  Kae FUJIWARA

IPC: H01M4/62 ,  C08F214/22

Abstract: A binder and a slurry suitable for use in the production of an electrode in a sulfide-based solid-state battery. The binder contains sulfide-based solid electrolyte particles, and is a polymer including a vinylidene fluoride unit and at least one copolymerization unit (A) selected from a monomer unit having a structure represented by formula (1) below and a monomer unit having a structure represented by formula (2) below: where Rf1 and Rf2 are each a linear or branched fluorinated alkyl or fluorinated alkoxy group with 1 to 12 carbon atoms, which optionally contains an oxygen atom between carbon-carbon atoms when the number of carbon atoms is 2 or more. The slurry contains sulfide-based solid electrolyte particles, the binder and a solvent. Also disclosed is an electrode including an electrode active material layer formed using the slurry and a lithium-ion secondary solid state battery including the electrode.

公开(公告)号：US20210249700A1

公开(公告)日：2021-08-12

申请号：US17240053

申请日：2021-04-26

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yoshiko KUWAJIMA ,  Toshiharu SHIMOOKA ,  Akinori TANI ,  Kae FUJIWARA ,  Masamichi MORITA

IPC: H01M10/36 ,  H01M4/04 ,  H01M4/36

Abstract: A coated particle including a sulfide-based particle and a fluorine-containing polymer that coats a surface of the sulfide-based particle. The fluorine-containing polymer includes a structural unit (1) based on a monomer (1) represented by the following formula (1) and a structural unit (2) based on at least one selected from the group consisting of, for example, a monomer (2) represented by the following formula (2): wherein, for example, X is a hydrogen atom; Y is a direct bond; and Rf is a C1-C10 linear or branched fluoroalkyl group, wherein, for example, R1 is a hydrogen atom; and R2 is a hydrocarbon group. Also disclosed are positive and negative electrodes including the coated particle, an all-solid-state battery including the positive and negative electrodes and a coating composition for a sulfide-based all-solid-state battery.

公开(公告)号：US20250118760A1

公开(公告)日：2025-04-10

申请号：US18983189

申请日：2024-12-16

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takaya YAMADA ,  Junpei TERADA ,  Takahiro FURUTANI ,  Kae FUJIWARA ,  Akinori TANI

IPC: H01M4/62 ,  C08F214/20 ,  H01M4/02 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0585

Abstract: A binder and a slurry suitable for use in the production of an electrode in a sulfide-based solid-state battery. The binder contains sulfide-based solid electrolyte particles, and is a fluorine-containing elastomer in which resin end functional groups satisfy: 0.01≤([—CH2OH]+[—COOH])/([—CH3]+[—CF2H]+[—CH2OH]+[—CH2I]+[—OC(O)RH]+[—COOH]≤0.25 wherein R represents an alkyl group with 1 to 20 carbon atoms. Also disclosed is an electrode including an electrode active material layer formed using the slurry and a lithium-ion secondary solid state battery including the electrode.

公开(公告)号：US20240421317A1

公开(公告)日：2024-12-19

申请号：US18820754

申请日：2024-08-30

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takaya YAMADA ,  Masahiko YAMADA ,  Junpei TERADA ,  Kae FUJIWARA ,  Kentarou HIRAGA ,  Xianwei SUI

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/04

Abstract: The present disclosure provides a secondary battery mixture that has good properties, a secondary battery mixture sheet containing the mixture, and a secondary battery using the secondary battery mixture sheet. The secondary battery mixture contains a solid-state electrolyte and/or electrode active material, and a binder, wherein the binder is a fibrillatable resin having a fibrous structure with a fibril diameter (median value) of 100 nm or less, and is contained in the secondary battery mixture in an amount of 0.3% by mass or more and 8% by mass or less.

公开(公告)号：US20240421316A1

公开(公告)日：2024-12-19

申请号：US18819446

申请日：2024-08-29

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takaya YAMADA ,  Masahiko YAMADA ,  Junpei TERADA ,  Kae FUJIWARA ,  Kentarou HIRAGA ,  Xianwei SUI

IPC: H01M4/62 ,  H01M10/0562

Abstract: The present disclosure provides a secondary battery mixture containing an oxide-based electrolyte that has good properties, a secondary battery mixture sheet containing the mixture, and a solid-state secondary battery using the secondary battery mixture sheet. In addition, the present disclosure provides a method for producing a secondary battery mixture sheet that contains a binder having a fine fiber structure. The secondary battery mixture contains an oxide-based solid-state electrolyte and a binder, wherein the binder is a fibrillatable resin. The fibrillatable resin preferably has a fibrous structure with a fibril diameter (median value) of 100 nm or less.

公开(公告)号：US20240154164A1

公开(公告)日：2024-05-09

申请号：US18263926

申请日：2022-01-17

Applicant: MITSUI CHEMICALS, INC. ,  DAIKIN INDUSTRIES, LTD.

Inventor： Yusuke SHIMIZU ,  Hidenobu NOGI ,  Masahiro SUGURO ,  Yoshiko KUWAJIMA ,  Tomoya HIDAKA ,  Kae FUJIWARA ,  Shigeaki YAMAZAKI

IPC: H01M10/0567 ,  C07D323/02 ,  C07D327/10 ,  C07F1/02 ,  C07F5/02 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/44

CPC classification number: H01M10/0567 ,  C07D323/02 ,  C07D327/10 ,  C07F1/02 ,  C07F5/022 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/44 ,  H01M2300/0025

Abstract: Provided is a nonaqueous electrolyte solution for a lithium secondary battery, the nonaqueous electrolyte solution containing a compound (I) represented by Formula (I) and a compound (II) represented by Formula (II). In Formula (I), each of R1 and R2 independently represents a substituent such as an alkyl group having from 1 to 7 carbon atoms. In Formula (II), R3 represents an oxygen atom or the like; R4 represents a group represented by Formula (ii-1), a group represented by Formula (ii-2), or the like; and * represents a binding position. In Formula (ii-1), R41 represents an oxymethylene group or the like and, in Formula (ii-2), R42 represents an alkyl group having from 1 to 6 carbon atoms, or the like.