公开(公告)号：US20250051176A1

公开(公告)日：2025-02-13

申请号：US18294608

申请日：2022-08-05

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Masayuki SHIBATA ,  Shogo SHIMADA ,  Yuma KITAMURA

IPC: C01D15/00 ,  H01M10/0562

Abstract: A method of producing a sulfide solid electrolyte having high ionic conductivity and high thermal stability without complicating the production process is provided, by a method of producing a sulfide solid electrolyte containing: mixing a raw material inclusion containing at least one type selected from a lithium atom, a sulfur atom, and a phosphorus atom, and a complexing agent having 2 or more of hetero atoms in the molecule to obtain an electrolyte precursor; mixing the electrolyte precursor in a solvent containing an oxygen atom-containing compound having a relative permittivity of 3.2 or higher at 25° C.; obtaining a grinding treatment product by performing grinding treatment of the mixture; and removing the solvent from the grinding treatment product to obtain a sulfide solid electrolyte.

公开(公告)号：US20230223587A1

公开(公告)日：2023-07-13

申请号：US17924156

申请日：2021-05-10

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shogo SHIMADA ,  Hirofumi ISHIBASHI ,  Yasuhito KAGOTA

IPC: H01M10/0562

CPC classification number: H01M10/0562 ,  H01M2300/008

Abstract: There is provided a solid electrolyte production method which can provide a solid electrolyte having a high ion conductivity at low cost with high productivity using a liquid-phase method. The method comprises drying a slurry by fluidized drying using media particles as a medium. The slurry includes a solid electrolyte comprising at least an alkali metal, sulfur atoms and phosphorus atoms as constituent atoms, or a precursor of the solid electrolyte, and a polar solvent.

公开(公告)号：US20210242496A1

公开(公告)日：2021-08-05

申请号：US17254477

申请日：2019-11-22

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Masayuki SHIBATA ,  Hiroaki YAMADA ,  Nobuhito NAKAYA ,  Yusuke ISEKI ,  Minoru SENGA ,  Takashi HAYAKAWA ,  Shogo SHIMADA ,  Tomoyuki OKUYAMA ,  Koji KATO

IPC: H01M10/0562 ,  H01B1/10 ,  H01M10/42

Abstract: A sulfide solid electrolyte, which is able to adjust the morphology unavailable traditionally, or is readily adjusted so as to have a desired morphology, the sulfide solid electrolyte having a volume-based average particle diameter measured by laser diffraction particle size distribution measurement of 3 μm or more and a specific surface area measured by the BET method of 20 m2/g or more; and a method of treating a sulfide solid electrolyte including the sulfide solid electrolyte being subjected to at least one mechanical treatment selected from disintegration and granulation.

公开(公告)号：US20250096319A1

公开(公告)日：2025-03-20

申请号：US18965366

申请日：2024-12-02

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Masayuki SHIBATA ,  Hiroaki YAMADA ,  Nobuhito NAKAYA ,  Yusuke ISEKI ,  Minoru SENGA ,  Takashi HAYAKAWA ,  Shogo SHIMADA ,  Tomoyuki OKUYAMA ,  Koji KATO

IPC: H01M10/0562 ,  H01B1/10 ,  H01M10/42

Abstract: A sulfide solid electrolyte may be able to adjust the morphology unavailable traditionally, or readily adjust so as to have a desired morphology. Such a sulfide solid electrolyte may include a substance including a lithium element, a sulfur element, and a phosphorus element; and an amine compound. The solid electrolyte may have a volume-based average particle diameter of 10 μm or less, measured by laser diffraction particle size distribution measurement, and/or a BET specific surface area of 40 m2/g or less.

公开(公告)号：US20230223594A1

公开(公告)日：2023-07-13

申请号：US18184707

申请日：2023-03-16

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Masayuki SHIBATA ,  Hiroaki YAMADA ,  Nobuhito NAKAYA ,  Yusuke ISEKI ,  Minoru SENGA ,  Takashi HAYAKAWA ,  Shogo SHIMADA ,  Tomoyuki OKUYAMA ,  Koji KATO

IPC: H01M10/0562

CPC classification number: H01M10/0562 ,  H01M2300/0068

Abstract: A sulfide solid electrolyte, which is able to adjust the morphology unavailable traditionally, or is readily adjusted so as to have a desired morphology, the sulfide solid electrolyte having a volume-based average particle diameter measured by laser diffraction particle size distribution measurement of 3 μm or more and a specific surface area measured by the BET method of 20 m2/g or more; and a method of treating a sulfide solid electrolyte including the sulfide solid electrolyte being subjected to at least one mechanical treatment selected from disintegration and granulation.