公开(公告)号：US20220359910A1

公开(公告)日：2022-11-10

申请号：US17770128

申请日：2020-12-11

申请人： Mitsui Mining & Smelting Co., Ltd.

发明人： Yuki NAKAYAMA ,  Takahiro ITO ,  Tsukasa TAKAHASHI

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

摘要： A sulfide solid electrolyte that can suppress the generation of hydrogen sulfide gas while maintaining the lithium ion conductivity; and an electrode composite material, a slurry and a battery, in each of which the sulfide solid electrolyte is used, are provided. The sulfide solid electrolyte contains lithium (Li), phosphorus (P) and sulfur (S) elements; at least one halogen (X) element; and at least one metal (M) element having a first ionization energy of more than 520.2 KJ/mol and less than 1007.3 KJ/mol, wherein, in an X-ray diffraction pattern measured with CuKα1 radiation, peaks are present at positions of 2θ=25.19°±1.00° and 29.62°±1.00°.

公开(公告)号：US20220263122A1

公开(公告)日：2022-08-18

申请号：US17606776

申请日：2020-12-25

申请人： Mitsui Mining & Smelting Co., Ltd.

发明人： Yuki NAKAYAMA ,  Takahiro ITO ,  Tsukasa TAKAHASHI

IPC分类号： H01M10/0562 ,  H01M4/36 ,  H01M4/04 ,  H01M10/0525

摘要： Provided are a sulfide solid electrolyte having a small particle size and a low specific surface area; an electrode composite material, a slurry and a battery in each of which the sulfide solid electrolyte is used; and a method of producing the sulfide solid electrolyte. The sulfide solid electrolyte contains lithium (Li), phosphorus (P) and sulfur (S) elements and has: a median diameter D50 of 0.10 μm or more and 2.0 μm or less; and a value of the formula: (A×B)/C, wherein A represents a BET specific surface area (m2/g), B represents a true density (g/cm3), and C represents a CS value (m2/cm3), of 1.0 or more and 2.5 or less.

公开(公告)号：US20240128497A1

公开(公告)日：2024-04-18

申请号：US18278558

申请日：2022-03-28

申请人： Mitsui Mining & Smelting Co., Ltd.

发明人： Yuki NAKAYAMA ,  Tsukasa TAKAHASHI

IPC分类号： H01M10/0562 ,  H01M6/18 ,  H01M10/052

CPC分类号： H01M10/0562 ,  H01M6/187 ,  H01M10/052 ,  H01M2300/008

摘要： A solid electrolyte contains Li, P, S, halogen, and M elements (M represents at least one of silicon (Si), tin (Sn), antimony (Sb), germanium (Ge), and boron (B)), and has a crystalline phase with an argyrodite-type crystal structure. A molar ratio S/(P+M) of the S to the total of the P and M elements satisfies 3.5

公开(公告)号：US20230038374A1

公开(公告)日：2023-02-09

申请号：US17792839

申请日：2021-03-15

申请人： Mitsui Mining & Smelting Co., Ltd.

发明人： Yuki NAKAYAMA ,  Takahiro ITO ,  Tsukasa TAKAHASHI

IPC分类号： H01M10/0562 ,  H01M4/62 ,  H01M10/0525 ,  H01M6/18 ,  C01B25/14

摘要： There is provided a sulfide solid electrolyte containing elemental lithium (Li), elemental phosphorus (P), elemental sulfur (S), and an elemental halogen (X). The mole ratio of the elemental lithium (Li) to the elemental phosphorus (P), Li/P, satisfies 3.7

公开(公告)号：US20240154155A1

公开(公告)日：2024-05-09

申请号：US18281005

申请日：2022-03-29

申请人： Mitsui Mining & Smelting Co., Ltd.

发明人： Yuki NAKAYAMA ,  Tsukasa TAKAHASHI

IPC分类号： H01M10/0562 ,  C01D15/00

CPC分类号： H01M10/0562 ,  C01D15/00 ,  C01P2002/72 ,  C01P2006/40 ,  H01M2300/008

摘要： A solid electrolyte contains a lithium (Li) element, a phosphorous (P) element, a sulfur (S) element, and a halogen (X) element. The solid electrolyte has a crystal phase that has an argyrodite-type crystal structure. The crystal phase that has an argyrodite-type crystal structure has a crystallite size of 40 nm or less. The solid electrolyte satisfies a ratio Ia/Ib of 0.2 or less, where Ia represents the intensity of a peak A observed in a range of 2θ=27.0°±0.5° in an XRD pattern, and Ib represents the intensity of a peak B observed in a range of 2θ=25.5°±1.0° in the XRD pattern.

公开(公告)号：US20210288307A1

公开(公告)日：2021-09-16

申请号：US17258678

申请日：2019-07-23

申请人： MITSUI MINING & SMELTING CO., LTD.

发明人： Yuki NAKAYAMA ,  Daisuke WASHIDA ,  Hitohiko IDE

IPC分类号： H01M4/131 ,  H01M4/36 ,  H01M10/0525

摘要： The present invention provides a positive electrode active material with which an increase in the interface resistance between the positive electrode active material and a sulfide solid electrolyte over time can be suppressed and also the interface resistance is low. The positive electrode active material of the present invention includes particles that have core particles containing a complex oxide of lithium and a metal element and a coating layer arranged on the surface of the core particles, and is used in a solid-state battery containing a sulfide solid electrolyte. The coating layer is composed of an oxide containing Li and M, where M represents one or two or more elements selected from the group consisting of B, Nb, Ti, Zr, Ta, Zn, W, and Al, or M is B when M represents one element. The molar ratio of Li/M on the surface of the coating layer, as obtained by X-ray photoelectron spectroscopy, is from 0.85 to 3.95.

公开(公告)号：US20230037508A1

公开(公告)日：2023-02-09

申请号：US17788562

申请日：2020-12-25

申请人： Mitsui Mining & Smelting Co., Ltd.

发明人： Yuki NAKAYAMA ,  Takahiro ITO ,  Tsukasa TAKAHASHI ,  Teruaki YAGI

IPC分类号： H01M10/0562 ,  H01M10/0525

摘要： An object of the present invention is to provide a sulfide solid electrolyte having a reduced specific surface area; an electrode composite material, a slurry and a solid battery, in each of which the sulfide solid electrolyte is used; and a method of producing the sulfide solid electrolyte, and the present invention provides a sulfide solid electrolyte containing lithium (Li), phosphorus (P) and sulfur (S) elements, and also containing a crystal phase having peaks at positions of 2θ=23.2°±1.00° and 29.2°±0.500° in an X-ray diffraction pattern measured with CuKα1 radiation.