公开(公告)号：US20200373612A1

公开(公告)日：2020-11-26

申请号：US16494113

申请日：2018-03-12

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Hiroaki YAMADA ,  Takeshi MAKINO

IPC: H01M10/0562 ,  C03C10/00

Abstract: Disclosed is a method for producing a sulfide-based solid electrolyte containing an alkali metal, a sulfur element, a phosphorus element and a halogen element, including performing a reaction of an alkali metal sulfide and a substance containing at least one element of a sulfur element, a phosphorus element and a halogen element in an organic solvent having an electron-withdrawing group. The method provides a sulfide-based solid electrolyte having a high ion conductivity.

公开(公告)号：US20190074542A1

公开(公告)日：2019-03-07

申请号：US16084114

申请日：2017-03-14

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Takeshi MAKINO ,  Hiroaki YAMADA

IPC: H01M10/0562 ,  C03C10/16 ,  C03C4/14 ,  C03C3/32 ,  H01M10/0525

Abstract: Provided is a solid electrolyte having a high ion conductivity and excellent in battery performance not going through a step of removing water such as a drying step, while simplifying the production process and reducing the production cost. Specifically, provided is a method for producing a sulfide-based solid electrolyte, including causing a reaction of an alkali metal sulfide and a specific substance in a 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：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：US20240322227A1

公开(公告)日：2024-09-26

申请号：US18680950

申请日：2024-05-31

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Hiroaki YAMADA

IPC: H01M10/0562 ,  H01M10/0525

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

Abstract: A metal element-containing sulfide solid electrolyte may suppress H2S generation. Such a metal element-containing sulfide solid electrolyte may include a lithium element, a sulfur element, a phosphorus element, a halogen element, and at least one metal element selected from metal elements of Groups 3 to 12 and Period 4 or higher of the Periodic Table, in which the molar ratio of the lithium element to the phosphorus element (Li/P) is 2.4 or more and 12 or less, and the molar ratio of the sulfur element to the phosphorus element (S/P) is 3.7 or more and 12 or less.

公开(公告)号：US20240083761A1

公开(公告)日：2024-03-14

申请号：US18272857

申请日：2022-01-17

Applicant: IDEMITSU KOSAN CO.,LTD

Inventor： Takayoshi KAMBARA ,  Hiroaki YAMADA

IPC: C01D15/04 ,  C01B17/45 ,  H01M10/0562

CPC classification number: C01D15/04 ,  C01B17/45 ,  H01M10/0562 ,  C01P2002/50 ,  C01P2002/72 ,  C01P2006/40 ,  H01M2300/008

Abstract: The present invention relates to a method for producing a lithium halide compound, including performing a mixing heat treatment step of mixing lithium sulfide and an ammonium halide under a heating condition of 90 to 250° C., and which does not involve a step of directly removing water, does not use a simple substance halogen which is complicated to handle, can easily remove by-products, and does not require excessive energy for production.

公开(公告)号：US20210391596A1

公开(公告)日：2021-12-16

申请号：US17460577

申请日：2021-08-30

Applicant: IDEMITSU KOSAN CO.,LTD.

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

IPC: H01M10/0562

Abstract: A solid electrolyte contains a thio-LISICON Region II-type crystal structure, where the solid electrolyte does not contain P2S64− structure. A solid electrolyte, where:
(1) a signal of a thio-LISICON Region II-type crystal structure is observed in the solid 31P-NMR spectrometry, and
(2) a signal of a P2S64− structure is not observed in the solid 31P-NMR spectrometry.

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：US20220294008A1

公开(公告)日：2022-09-15

申请号：US17633997

申请日：2020-09-09

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Takayoshi KAMBARA ,  Nobuhito NAKAYA ,  Hiroaki YAMADA

IPC: H01M10/0562 ,  C01B25/14 ,  C03C4/14 ,  C03C10/16

Abstract: The present invention provides a production method of a solid electrolyte containing a lithium element, a sulfur element, a phosphorous element, and a halogen element, wherein the solid electrolyte has a high ionic conductivity and capable of suppressing hydrogen sulfide by adopting a liquid-phase method, wherein the method includes mixing a complexing agent having an ester group and also having at least one branch with a solid electrolyte raw material. The present invention also relates to an electrolyte precursor.

公开(公告)号：US20210284534A1

公开(公告)日：2021-09-16

申请号：US16986335

申请日：2020-08-06

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Hiroaki YAMADA ,  Hironari KIMPARA ,  Shota TOTSUKA ,  Atsushi SATO

IPC: C01B17/38 ,  H01M10/0562 ,  H01M10/058

Abstract: A method of production of a solid electrolyte, which comprises: a step of obtaining a mixture comprising a sulfide solid electrolyte and a tertiary alcohol including 9 or less carbon atoms, and a step of removing the tertiary alcohol from the mixture.