公开(公告)号：US20240021867A1

公开(公告)日：2024-01-18

申请号：US18035131

申请日：2021-11-11

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Masayuki SHIBATA ,  Hiroaki YAMADA ,  Yusuke ISEKI

IPC: H01M10/0562

CPC classification number: H01M10/0562 ,  H01M2300/0068

Abstract: The present invention addresses a problem of providing a production method for a sulfide solid electrolyte having a high ionic conductivity by pulverizing a sulfide solid electrolyte without complicating the production process. Provided is a production method for a crystalline sulfide solid electrolyte including mixing a raw material inclusion containing at least one selected from a lithium atom, a sulfur atom and a phosphorus atom, and a complexing agent without using a mechanical treating machine to obtain an electrolyte precursor, heating the electrolyte precursor to obtain a complex degradate, performing smoothing treatment on the complex degradate to obtain a smoothed complex degradate, and heating the smoothed complex degradate.

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.

公开(公告)号：US20210408581A1

公开(公告)日：2021-12-30

申请号：US17317951

申请日：2021-05-12

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Fumio YAMAKAWA ,  Masao AIDA ,  Yusuke ISEKI ,  Hiroaki YAMADA ,  Shinji TANAKA

IPC: H01M10/0562 ,  H01M10/0525

Abstract: [Problem] To provide a method for efficiently producing a sulfide solid electrolyte using a liquid-phase method.
[Solution to Problem] A method for producing a sulfide solid electrolyte not using a pulverizer in reacting raw materials, wherein a raw material that contains lithium sulfide, a phosphorus compound and a halogen compound, and a complexing agent are stirred in a reactor while a fluid that contains the contents in the reactor is discharged outside the reactor through a discharging port arranged in the reactor and the fluid that contains the discharged contents is returned back to the reactor through a returning port arranged in the reactor to thereby make the contents-containing fluid circulate therethrough.

公开(公告)号：US20210249685A1

公开(公告)日：2021-08-12

申请号：US17254543

申请日：2019-11-22

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Masayuki SHIBATA ,  Hiroaki YAMADA ,  Nobuhito NAKAYA ,  Yusuke ISEKI ,  Minoru SENGA

IPC: H01M10/0562

Abstract: A method of producing a solid electrolyte having a high ionic conductivity, which adopts a liquid-phase method and suppresses the generation of hydrogen sulfide, wherein a raw material inclusion containing a lithium element, a sulfur element, a phosphorus element, and a halogen element is mixed with a complexing agent containing a compound having at least two tertiary amino groups; and an electrolyte precursor constituted of a lithium element, a sulfur element, a phosphorus element, a halogen element, and a complexing agent containing a compound having at least two tertiary amino groups.

公开(公告)号：US20250006987A1

公开(公告)日：2025-01-02

申请号：US18882927

申请日：2024-09-12

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Fumio YAMAKAWA ,  Masao AIDA ,  Yusuke ISEKI ,  Hiroaki YAMADA ,  Shinji TANAKA

IPC: H01M10/0562 ,  C01B25/14 ,  H01M10/052 ,  H01M10/0525

Abstract: [Problem] To provide a method for efficiently producing a sulfide solid electrolyte using a liquid-phase method.
[Solution to Problem] A method for producing a sulfide solid electrolyte not using a pulverizer in reacting raw materials, wherein a raw material that contains lithium sulfide, a phosphorus compound and a halogen compound, and a complexing agent are stirred in a reactor while a fluid that contains the contents in the reactor is discharged outside the reactor through a discharging port arranged in the reactor and the fluid that contains the discharged contents is returned back to the reactor through a returning port arranged in the reactor to thereby make the contents-containing fluid circulate therethrough.

公开(公告)号：US20240079648A1

公开(公告)日：2024-03-07

申请号：US18271515

申请日：2022-01-25

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Nobuhito NAKAYA ,  Yusuke ISEKI ,  Tomoyuki OKUYAMA ,  Hiroto IDA ,  Toshifumi MIYAGAWA ,  Atsushi YAO

IPC: H01M10/0565

CPC classification number: H01M10/0565 ,  H01M2300/0082

Abstract: Provided are a method of manufacturing a modified sulfide solid electrolyte, which is excellent in coating suitability when applied as a paste even if a sulfide solid electrolyte has a large specific surface area, and can efficiently exhibit an excellent battery performance, the modified sulfide solid electrolyte obtained by the manufacturing method, and an electrode combined material and a lithium ion battery which exhibit an excellent battery performance. The method includes: mixing an organic halide and an organic solvent with a sulfide solid electrolyte having a BET specific surface area of 10 m2/g or more and containing a lithium atom, a sulfur atom, a phosphorus atom, and a halogen atom; and removing the organic solvent.

公开(公告)号：US20230317920A1

公开(公告)日：2023-10-05

申请号：US18118215

申请日：2023-03-07

Applicant: IDEMITSU KOSAN CO., LTD

Inventor： Yusuke ISEKI ,  Atsushi Sato

IPC: H01M4/1397 ,  H01M10/0525 ,  H01M10/0562

CPC classification number: H01M4/1397 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2300/0068

Abstract: Provided is a production method for a sulfide solid electrolyte capable of preventing generation of a hydrogen sulfide gas even when brought into contact with moisture while capable of preventing reduction in ionic conductivity, the method includes mixing a raw material inclusion containing at least two raw materials, the raw material inclusion contains at least one selected from a lithium atom, a sulfur atom, a phosphorus atom and a halogen atom, and the raw material inclusion contains modified P2S5. Also provided are the sulfide solid electrolyte produced by the method, an electrode mixture, a lithium ion battery, and a modified P2S5 for production of a sulfide solid electrolyte.

公开(公告)号：US20230242408A1

公开(公告)日：2023-08-03

申请号：US17927765

申请日：2021-05-20

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Yusuke ISEKI ,  Takashi NAKAGAWA ,  Toyohiko IWAI

IPC: C01D15/04

CPC classification number: C01D15/04 ,  C01P2002/70 ,  C01P2004/03

Abstract: The present invention relates to a method for producing a lithium halide compound, capable of industrially advantageously producing a lithium halide compound having a low water content, particularly lithium bromide and lithium iodide, at a high reaction efficiency without accompanying a step of directly removing water, and the method including mixing lithium sulfide, a halogen molecule of at least one of bromine and iodine, and a first solvent; and removing the first solvent, wherein the first solvent is a solvent that dissolves a lithium halide containing the same halogen element as the halogen molecule.