公开(公告)号：US20210234172A1

公开(公告)日：2021-07-29

申请号：US17228714

申请日：2021-04-13

Applicant: FUJIFILM Corporation

Inventor： Hiroshi ISOJIMA ,  Shin OZAWA

IPC: H01M4/62 ,  H01M4/38 ,  H01M4/36 ,  H01M4/04 ,  H01M10/0525 ,  H01M10/058

Abstract: Provided are an electrode composition, an electrode sheet for an all-solid state secondary battery and an all-solid state secondary battery that are formed of the electrode composition, and respective methods of manufacturing the electrode composition, the electrode sheet for an all-solid state secondary battery, and the all-solid state secondary battery. The electrode composition includes: an inorganic solid electrolyte; an active material; and a distributing component that binds to the inorganic solid electrolyte and the active material, in which one kind of the distributing component is a binder, a polymer forming the binder includes a repeating unit having an amino group, a sulfanyl group, a hydroxy group, a carboxy group, or an anone group, and a distribution rate of the distributing component to the inorganic solid electrolyte in an electrode active material layer formed of the electrode composition exceeds 60%.

公开(公告)号：US20210083299A1

公开(公告)日：2021-03-18

申请号：US17103976

申请日：2020-11-25

Applicant: FUJIFILM Corporation

Inventor： Shin OZAWA ,  Hiroshi ISOJIMA

IPC: H01M4/66 ,  H01M4/62 ,  H01M4/04 ,  H01M10/0525 ,  H01M10/058

Abstract: Provided is a current collector with an easily adhesive layer including an easily adhesive layer that is provided on at least one surface of a current collector, in which the easily adhesive layer includes a polymer having a solubility of 1 g/100 g or higher in toluene at 25° C. Provided are also an electrode, an all-solid state secondary battery, an electronic apparatus, and an electric vehicle that include the current collector with an easily adhesive layer, and methods of manufacturing the current collector with an easily adhesive layer, the electrode, and the all-solid state secondary battery.

公开(公告)号：US20220181681A1

公开(公告)日：2022-06-09

申请号：US17679048

申请日：2022-02-23

Applicant: FUJIFILM Corporation

Inventor： Hiroshi ISOJIMA ,  Hideyuki SUZUKI ,  Koji YASUDA

IPC: H01M10/0562 ,  H01M10/0525

Abstract: There is provided an inorganic solid electrolyte-containing composition containing an inorganic solid electrolyte, a polymer binder, and a dispersion medium, in which the polymer binder includes a polymer binder consisting of a fluorine-based copolymer which contains a vinylidene fluoride constitutional component and a hexafluoropropylene constitutional component of 21% to 65% by mole and in which a tensile fracture strain is 500% or more, and the adsorption rate of this polymer binder with respect to the inorganic solid electrolyte is less than 60%. There are also provided a sheet for an all-solid state secondary battery and an all-solid state secondary battery, in which this inorganic solid electrolyte-containing composition is used, and manufacturing methods for a sheet for an all-solid state secondary battery, and an all-solid state secondary battery.

公开(公告)号：US20210242465A1

公开(公告)日：2021-08-05

申请号：US17228717

申请日：2021-04-13

Applicant: FUJIFILM Corporation

Inventor： Hiroshi ISOJIMA ,  Shin OZAWA

IPC: H01M4/62 ,  H01M4/1395 ,  H01M4/134 ,  H01M10/0562

Abstract: Provided are an electrode composition, an electrode sheet for an all-solid state secondary battery, an all-solid state secondary battery, and respective methods of manufacturing the electrode composition, the electrode sheet for an all-solid state secondary battery, and the all-solid state secondary battery. The electrode composition includes: an inorganic solid electrolyte; an active material; and a distributing component that binds to the inorganic solid electrolyte and the active material, in which one kind of the distributing component is a binder, an adsorption rate A of the binder to the active material and an adsorption rate B of the binder to the inorganic solid electrolyte satisfy the following Expressions I) and II), and a distribution rate of the distributing component to the active material in an electrode active material layer formed of the electrode composition exceeds 50%. Adsorption Rate A≥20%   Expression I) Adsorption Rate A>Adsorption Rate B   Expression II)

公开(公告)号：US20200350628A1

公开(公告)日：2020-11-05

申请号：US16935182

申请日：2020-07-21

Applicant: FUJIFILM Corporation

Inventor： Hiroshi ISOJIMA ,  Shin OZAWA

IPC: H01M10/0562 ,  H01M4/139 ,  H01M4/62

Abstract: Provided are a solid electrolyte composition including an inorganic solid electrolyte and a dispersion medium (A), in which the dispersion medium (A) includes a ketone compound (A1), and at least one dispersant (A2) selected from a ketone compound (A2-1) having a chemical structure different from the ketone compound (A1) or a alcohol compound (A2-2) and a method of manufacturing the same, a solid electrolyte-containing sheet, an electrode sheet for an all-solid state secondary battery, and a method of manufacturing an all-solid state secondary battery.

公开(公告)号：US20230223593A1

公开(公告)日：2023-07-13

申请号：US18180862

申请日：2023-03-09

Applicant: FUJIFILM Corporation

Inventor： Hiroshi ISOJIMA ,  Hideyuki SUZUKI ,  Koji YASUDA

IPC: H01M10/0562 ,  H01M10/0585 ,  H01M4/62

CPC classification number: H01M10/0562 ,  H01M10/0585 ,  H01M4/622 ,  H01M2300/0068 ,  H01M2004/021

Abstract: There are provided an inorganic solid electrolyte-containing composition that has excellent dispersion characteristics and excellent application suitability and enables excellent cycle characteristics, a sheet for an all-solid state secondary battery, and an all-solid state secondary battery, and manufacturing methods for a sheet for an all-solid state secondary battery and an all-solid state secondary battery, in which the above inorganic solid electrolyte-containing composition is used. The inorganic solid electrolyte-containing composition for an all-solid state secondary battery contains an inorganic solid electrolyte, a polymer binder, and a dispersion medium, in which an adsorption rate of the polymer binder with respect to the inorganic solid electrolyte is 50% or less, and the inorganic solid electrolyte and the polymer binder satisfies a specific relationship in terms of surface energy.

公开(公告)号：US20220181680A1

公开(公告)日：2022-06-09

申请号：US17679043

申请日：2022-02-23

Applicant: FUJIFILM Corporation

Inventor： Hiroshi ISOJIMA ,  Hideyuki SUZUKI ,  Koji YASUDA

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M10/0585 ,  H01M4/62 ,  C08F297/04

Abstract: There is provided an inorganic solid electrolyte-containing composition containing an inorganic solid electrolyte, a polymer binder, and a dispersion medium having an SP value of 15 to 21 MPa1/2, in which the binder includes a polymer binder consisting of a styrene-ethylene-butylene-styrene copolymer in which a content of a styrene constitutional component is more than 0% by mole and less than 50% by mole, the adsorption rate of the polymer binder with respect to the inorganic solid electrolyte is less than 60%. There are also provided a sheet for an all-solid state secondary battery and an all-solid state secondary battery, in which this inorganic solid electrolyte-containing composition is used, and manufacturing methods for a sheet for an all-solid state secondary battery, and an all-solid state secondary battery.

公开(公告)号：US20220140395A1

公开(公告)日：2022-05-05

申请号：US17572543

申请日：2022-01-10

Applicant: FUJIFILM Corporation

Inventor： Hiroshi ISOJIMA ,  Hideyuki SUZUKI

IPC: H01M10/0568 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/0569 ,  H01M4/62

Abstract: An inorganic solid electrolyte-containing composition is a composition containing an inorganic solid electrolyte, a binder, and an organic solvent, where the composition contains, as the binder, at least two kinds of binder A and binder B which differ in adsorption rate with respect to the inorganic solid electrolyte, and an adsorption rate of the inorganic solid electrolyte-containing composition is 15% or more, and an adsorption rate of the binder B is less than 10%.

公开(公告)号：US20210184252A1

公开(公告)日：2021-06-17

申请号：US17183365

申请日：2021-02-24

Applicant: FUJIFILM Corporation

Inventor： Toshihiko YAWATA ,  Shin OZAWA ,  Hideyuki SUZUKI ,  Hiroshi ISOJIMA

IPC: H01M10/0562 ,  H01M4/136 ,  H01M4/1397

Abstract: Provided are a negative electrode composition including a sulfide-based inorganic solid electrolyte, a negative electrode active material containing a silicon atom or a tin atom, and a polymer, in which the polymer has substantially no adsorption capacity to the negative electrode active material and the sulfide-based inorganic solid electrolyte, a modulus of elasticity of the polymer measured in accordance with JIS K 7161 (2014) is 100 MPa or higher and 1000 MPa or lower, and in a case where a negative electrode active material layer is formed of the negative electrode composition, the polymer is contained in the negative electrode active material layer in a particle form, a negative electrode sheet for an all-solid state secondary battery, an all-solid state secondary battery, a method for manufacturing a negative electrode sheet for an all-solid state secondary battery, and a method for manufacturing an all-solid state secondary battery.

公开(公告)号：US20240120490A1

公开(公告)日：2024-04-11

申请号：US18518584

申请日：2023-11-23

Applicant: FUJIFILM Corporation

Inventor： Hiroshi ISOJIMA ,  Hideyuki SUZUKI

IPC: H01M4/62 ,  H01M4/36 ,  H01M10/0562 ,  H01M10/058

CPC classification number: H01M4/622 ,  H01M4/366 ,  H01M10/0562 ,  H01M10/058 ,  H01M2004/021

Abstract: There is provided an electrode composition that contains an inorganic solid electrolyte, an active material, a conductive auxiliary agent, a polymer binder, and a dispersion medium and satisfies the following conditions (1) to (4). There are also provided an electrode sheet for an all-solid state secondary battery and an all-solid state secondary battery, as well as a method for producing these.



(1) The polymer binder is dissolved in the dispersion medium.
(2) The adsorption rate of the polymer binder with respect to the conductive auxiliary agent is more than 0% and 50% or less.
(3) The mass average molecular weight of the polymer that constitutes the polymer binder is 6,000 or more.
(4) The average particle diameter of the conductive auxiliary agent in the active material layer formed of the electrode composition is less than 1.0 μm.