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    SULFIDE BASED SOLID ELECTROLYTE, SOLID ELECTROLYTE LAYER, AND LITHIUM ION SECONDARY BATTERY
    3.
    发明公开
    SULFIDE BASED SOLID ELECTROLYTE, SOLID ELECTROLYTE LAYER, AND LITHIUM ION SECONDARY BATTERY 审中-公开

    公开(公告)号：US20240055653A1

    公开(公告)日：2024-02-15

    申请号：US18307902

    申请日：2023-04-27

    Applicant: AGC INC.

    Inventor： Naoki FUJII ,  Manabu NISHIZAWA ,  Hideaki HAYASHI

    IPC: H01M10/0562 ,  H01M10/0525

    CPC classification number: H01M10/0562 ,  H01M10/0525 ,  H01M2300/008

    Abstract: The present invention relates to a sulfide solid electrolyte to be used in a lithium-ion secondary battery, including an argyrodite crystal structure including Li, P, S, and Ha, in which Ha is at least one selected from the group consisting of F, Cl, Br, and I, the sulfide solid electrolyte has a peak in at least one selected from the group consisting of 140 cm−1 to 170 cm−1, 205 cm−1 to 235 cm−1, and 460 cm−1 to 490 cm−1 in a Raman spectrum obtained by Raman spectroscopy measurement, and the sulfide solid electrolyte does not have an endothermic peak within a range of 70° C. to 160° C. in a DSC curve obtained by differential scanning calorimetry.

    METHOD FOR PRODUCING SULFIDE-BASED SOLID ELECTROLYTE
    5.
    发明申请
    METHOD FOR PRODUCING SULFIDE-BASED SOLID ELECTROLYTE 有权

    公开(公告)号：US20240380002A1

    公开(公告)日：2024-11-14

    申请号：US18784750

    申请日：2024-07-25

    Applicant: AGC Inc.

    Inventor： Seiji HIGASHI ,  Naoki FUJII ,  Hidenobu SEKI ,  Ryota ANDO

    IPC: H01M10/0562 ,  H01M4/58 ,  H01M10/0525

    Abstract: A method for producing a sulfide-based solid electrolyte includes obtaining a sulfide-based solid electrolyte recycled product (B) from a liquid in which a sulfide-based solid electrolyte (A) in a sulfide-based solid electrolyte-containing mixture is dissolved in an organic solvent. The sulfide-based solid electrolyte-containing mixture contains the sulfide-based solid electrolyte (A) and another substance insoluble in the organic solvent. The method includes obtaining a solid-liquid mixture by immersing the sulfide-based solid electrolyte-containing mixture in the organic solvent to dissolve the sulfide-based solid electrolyte (A) in the organic solvent while having the other substance remaining as a solid component in the organic solvent, obtaining the dried recycled product (B) by subjecting the solid-liquid mixture to solid-liquid separation, causing a sulfide-based solid electrolyte to be deposited out from an obtained liquid fraction, and vaporizing the organic solvent, and subjecting the recycled product (B) to a heat treatment at 340° C. or higher.

    SULFIDE SOLID ELECTROLYTE AND METHOD FOR MANUFACTURING SAME
    6.
    发明公开
    SULFIDE SOLID ELECTROLYTE AND METHOD FOR MANUFACTURING SAME 审中-公开

    公开(公告)号：US20240266598A1

    公开(公告)日：2024-08-08

    申请号：US18619305

    申请日：2024-03-28

    Applicant: AGC Inc.

    Inventor： Naoki FUJII ,  Naoki MAEDA ,  Osamu HOMMA ,  Kosho AKATSUKA

    IPC: H01M10/0562 ,  H01M10/0525

    CPC classification number: H01M10/0562 ,  H01M10/0525 ,  H01M2300/008

    Abstract: The sulfide solid electrolyte of the present invention includes: an argyrodite crystal phase including Li, P, S, and Ha, in which the Ha is one or more halogen elements including at least Cl, a content ratio represented by [Ha]/[P] (atomic ratio) is 1.3 or more, where [P] is a content of the P and [Ha] is a total content of the Ha, and in a 35Cl-NMR spectrum, an area intensity ratio represented by SB/SA is 3.5 or more, where SA is an area intensity of a peak observed at 0 ppm to 30 ppm and SB is an area intensity of a peak observed at −150 ppm to 0 ppm, or a peak is observed at −150 ppm to 0 ppm and no peak is observed at 0 ppm to 30 ppm.

    SULFIDE SOLID ELECTROLYTE
    7.
    发明公开
    SULFIDE SOLID ELECTROLYTE 审中-公开

    公开(公告)号：US20240234805A1

    公开(公告)日：2024-07-11

    申请号：US18616312

    申请日：2024-03-26

    Applicant: AGC Inc.

    Inventor： Naoki FUJII ,  Riku KITAMURA ,  Jinsuke MIYAKE ,  Makiko INABA

    IPC: H01M10/0562 ,  H01M10/0525

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

    Abstract: The present invention relates to a sulfide solid electrolyte to be used for a lithium-ion secondary battery, the sulfide solid electrolyte including: an argyrodite crystal including Li, P, S, and Ha, in which the Ha represents at least one element selected from the group consisting of F, Cl, Br, and I, and the Ha includes at least one of Cl and Br, the argyrodite crystal satisfies at least one of requirements (A) and (B), and in the argyrodite crystal, relationships of {(1/χ(S))×[S2−]+(1/χ(O))×[O2−]+(1/χ(Br))×[Br−]+(1/χ(Cl))×[Cl−]+(1/χ(F))×[F−]}≤0.36 and [S2−]+[O2−]+[Br−]+[Cl−]+[F−]=1 are satisfied.

    SULFIDE SOLID ELECTROLYTE AND METHOD FOR PRODUCING SAME
    9.
    发明公开
    SULFIDE SOLID ELECTROLYTE AND METHOD FOR PRODUCING SAME 审中-公开

    公开(公告)号：US20240266596A1

    公开(公告)日：2024-08-08

    申请号：US18616320

    申请日：2024-03-26

    Applicant: AGC Inc.

    Inventor： Riku KITAMURA ,  Naoki FUJII

    IPC: H01M10/0562 ,  H01M10/0525

    CPC classification number: H01M10/0562 ,  H01M10/0525 ,  H01M2300/008

    Abstract: A sulfide solid electrolyte includes: a crystal phase and an anion, in which the phase includes an argyrodite crystal including Li, P, S, and Ha, the Ha is at least one element selected from F, Cl, Br, and I, the anion includes an oxide anion having a P—O bond, at least a part of the oxide anion is different from an anion constituting the argyrodite crystal and constitutes a polyanionic structure, when an entire composition of the electrolyte is LiaMSbHacOx, certain relationships are satisfied, the M is at least one element selected from a metal element and a metalloid element in groups 2 to 15 of a periodic table, the at least one element including P, and 60% or more of a total content of O is bonded to the M.

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