公开(公告)号：US20250096315A1

公开(公告)日：2025-03-20

申请号：US18963548

申请日：2024-11-28

Applicant: FUJIFILM Corporation ,  INSTITUTE OF SCIENCE TOKYO

Inventor： Yosuke SHIRATORI ,  Shintaro YASUI ,  Yukihiro OKUNO ,  Yasuharu SHIRAISHI ,  Kengo SAITO ,  Kenta WATANABE ,  Akihiro TAKAHASHI

IPC: H01M10/0562 ,  H01M4/66 ,  H01M10/0525

Abstract: Provided is an all-solid-state lithium ion secondary battery including one or more laminates in which a positive electrode layer, a solid electrolyte layer, and a negative electrode layer are arranged in this order, in which at least one collector layer included in at least one of the positive electrode layer or the negative electrode layer is a layer having a specific metal as a constitutional material or a layer having the specific metal in a coating layer, and the solid electrolyte layer contains an amorphous solid electrolyte which contains a lithium-containing oxide containing Li, B, and O, and water and a lithium salt with a specific molar ratio with respect to the lithium-containing oxide.

公开(公告)号：US20250096317A1

公开(公告)日：2025-03-20

申请号：US18963552

申请日：2024-11-28

Applicant: FUJIFILM Corporation ,  INSTITUTE OF SCIENCE TOKYO

Inventor： Yosuke SHIRATORI ,  Kenta WATANABE ,  Kengo SAITO ,  Shintaro YASUI ,  Masatoshi TOKAIRIN ,  Yukihiro OKUNO

IPC: H01M10/0562 ,  H01M4/04 ,  H01M10/0525

Abstract: Provided are an all-solid-state lithium ion secondary battery including, in the following order, a positive electrode layer, a solid electrolyte layer, and a negative electrode layer, in which the solid electrolyte layer contains an amorphous solid electrolyte which contains a lithium-containing oxide containing Li, B, and O and a lithium salt, in the amorphous solid electrolyte, a value of a ratio of a content of the lithium salt to a content of the lithium-containing oxide is 0.001 to 1.5 in terms of a molar ratio, and moisture contained in a laminate consisting of a positive electrode active material layer, the solid electrolyte layer, and a negative electrode active material layer is in a specific state; and a manufacturing method of the all-solid-state lithium ion secondary battery.

公开(公告)号：US20250096316A1

公开(公告)日：2025-03-20

申请号：US18963549

申请日：2024-11-28

Applicant: FUJIFILM Corporation ,  INSTITUTE OF SCIENCE TOKYO

Inventor： Yosuke SHIRATORI ,  Shintaro YASUI ,  Yasuharu SHIRAISHI ,  Kengo SAITO ,  Kenta WATANABE ,  Akihiro TAKAHASHI

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M10/0587

Abstract: Provided are a wound-type all-solid-state lithium ion secondary battery including a laminate in which a positive electrode layer, a solid electrolyte layer, and a negative electrode layer are arranged in this order, the laminate being wound around a core material, in which the solid electrolyte layer contains an amorphous solid electrolyte which contains a lithium-containing oxide containing Li, B, and O and a lithium salt, and in the amorphous solid electrolyte, a value of a ratio of a content of the lithium salt to a content of the lithium-containing oxide is 0.001 to 1.5 in terms of a molar ratio; and a manufacturing method of the wound-type all-solid-state lithium ion secondary battery.

公开(公告)号：US20250096309A1

公开(公告)日：2025-03-20

申请号：US18963772

申请日：2024-11-29

Applicant: FUJIFILM Corporation ,  INSTITUTE OF SCIENCE TOKYO

Inventor： Yukihiro OKUNO ,  Shintaro YASUI ,  Yosuke SHIRATORI ,  Kengo SAITO ,  Kenta WATANABE

IPC: H01M10/056 ,  H01M4/36 ,  H01M10/054

Abstract: An object of the present invention is to provide a sodium-based solid electrolyte having excellent ion conductivity, a method for producing a sodium-based solid electrolyte, a modified positive electrode active material, a modified negative electrode active material, a solid-state secondary battery, an electrode sheet for a solid-state secondary battery, a solid electrolyte sheet, and an electrode for a solid-state secondary battery.
The sodium-based solid electrolyte of the present invention contains amorphous sodium tetraborate, water, and a sodium salt.

公开(公告)号：US20230018477A1

公开(公告)日：2023-01-19

申请号：US17946025

申请日：2022-09-15

Applicant: FUJIFILM Corporation ,  TOKYO INSTITUTE OF TECHNOLOGY

Inventor： Yukihiro OKUNO ,  Yosuke SHIRATORI ,  Shintaro YASUI ,  Mitsuru ITOH

IPC: H01M10/0562 ,  H01M4/62 ,  H01M10/0585 ,  H01M10/0525 ,  C04B35/50

Abstract: According to the present invention, there are provided a composite body that enables the formation of a lithium ion conductor that exhibits good lithium ion conductivity by a pressurization treatment without sintering at a high temperature (about 1,000° C.) while using a lithium-containing oxide having excellent safety and stability, as well as a lithium ion conductor, an all-solid state lithium ion secondary battery, an electrode sheet for an all-solid state lithium ion secondary battery, and lithium tetraborate. The composite body according to the embodiment of the present invention contains a lithium compound having a lithium ion conductivity of 1.0×10−6 S/cm or more at 25° C. and lithium tetraborate that satisfies the following requirement 1.
The requirement 1: In a reduced two-body distribution function G(r) obtained from an X-ray total scattering measurement of the lithium tetraborate, a first peak in which a peak top is located in a range where r is 1.43±0.2 Å and a second peak in which a peak top is located in a range where r is 2.40±0.2 Å are present, G(r) of the peak top of the first peak and G(r) of the peak top of the second peak indicate more than 1.0, and an absolute value of G(r) is less than 1.0 in a range where r is more than 5 Å and 10 Å or less.

公开(公告)号：US20230343997A1

公开(公告)日：2023-10-26

申请号：US18325970

申请日：2023-05-30

Applicant: FUJIFILM Corporation ,  TOKYO INSTITUTE OF TECHNOLOGY

Inventor： Yosuke SHIRATORI ,  Yukihiro OKUNO ,  Shintaro YASUI ,  Kengo SAITO ,  Kenta WATANABE

IPC: H01M10/0562

CPC classification number: H01M10/0562 ,  H01M2300/0068

Abstract: The present invention provides a lithium-based solid electrolyte excellent in ion conductivity, an inorganic solid electrolyte, a production method for a lithium-based solid electrolyte, a modified positive electrode active material, a modified negative electrode active material, an all-solid state secondary battery, an electrode sheet for an all-solid state secondary battery, a solid electrolyte sheet, and an electrode for an all-solid state secondary battery. The lithium-based solid electrolyte according to the present invention contains lithium tetraborate in a noncrystalline state, water, and a lithium salt.