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1.发明公开
公开(公告)号：EP4462540A1
公开(公告)日：2024-11-13
申请号：EP24747449.7
申请日：2024-01-25
发明人： LEE, Jung Pil , SONG, Min Sang , LEE, Dong Ju , CHEN, Zheng
IPC分类号： H01M10/0562 , H01M4/62 , H01M10/052
摘要： The present disclosure relates to a solid electrolyte film, its fabrication method, and an all-solid-state battery including the same. More specifically, the solid electrolyte film comprises a slurry including a sulfide and/or halide-based solid electrolyte, a binder, and a solvent, coated on a substrate and then dried and pressed. By pressing at a temperature equal to or above a glass transition temperature (Tg) of the binder, the packing density of the solid electrolyte film is increased, thereby improving the ionic conductivity.
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公开(公告)号：EP4462507A1
公开(公告)日：2024-11-13
申请号：EP24165525.7
申请日：2024-03-22
发明人： OTAKI, Mitsutoshi , YOSHIDA, Jun , YAMAGUCHI, Yasuhiro , EGUCHI, Tatsuya , HARATA, Masanori , NIIMI, Tomohiro , YUKAWA, Kayoko , URABE, Kota
IPC分类号： H01M4/38 , H01M4/134 , H01M4/62 , H01M10/052 , H01M10/0562 , H01M10/0525 , H01M4/02
摘要： The present disclosure provides a silicon clathrate electrode active material having low expansion during charging and a solid-state lithium-ion battery comprising such a silicon clathrate electrode active material. The silicon clathrate electrode active material of the present disclosure comprises greater than 0% by mass and less than 19.4% by mass of oxygen atoms. The solid-state lithium-ion battery of the present disclosure comprises the negative electrode active material layer of the present disclosure. The negative electrode active material layer of the present disclosure contains the negative electrode mixture of the present disclosure. The negative electrode mixture of the present disclosure comprises a silicon clathrate electrode active material and a solid electrolyte.
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公开(公告)号：EP4462501A2
公开(公告)日：2024-11-13
申请号：EP24164410.3
申请日：2024-03-19
发明人： FURUYA, Ryosuke , YOSHIDA, Jun
IPC分类号： H01M4/134 , H01M4/38 , H01M4/62 , H01M10/0562 , H01M4/1395 , H01M10/0525
摘要： The slurry for forming negative electrode active material layer of the present disclosure contains:
a ketone as a dispersion medium; and
silicon active material particles, sulfide solid electrolyte particles, and single-wall carbon nanotubes, which are dispersed in the ketone, and
a ratio of the single-wall carbon nanotubes with respect to the ketone is 0.15% by mass or lower.-
公开(公告)号：EP4462494A1
公开(公告)日：2024-11-13
申请号：EP22918887.5
申请日：2022-12-26
发明人： NAGAO, Kenji , NISHIO, Yusuke , SASAKI, Izuru
IPC分类号： H01M4/13 , H01M4/36 , H01M4/62 , H01M10/0562
摘要： A positive electrode material 1000 according to the present disclosure includes a mixture of a positive electrode active material 110, a solid electrolyte 100, and a conductive material 140. A ratio of a volume of the positive electrode active material 110 to a sum of the volume of the positive electrode active material 110 and a volume of the solid electrolyte 100 is 50% or more and 90% or less. In the positive electrode material 1000, 30 ≤ X ≤ 80 is satisfied, where X is a value determined by the following equation (1): X = A × B Equation (1). In the equation (1), A is a BET specific surface area (m 2 /g) of the conductive material 140, and B is a ratio (%) of a mass (g) of the conductive material 140 to a mass (g) of the positive electrode active material 110.
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公开(公告)号：EP4462493A1
公开(公告)日：2024-11-13
申请号：EP22918886.7
申请日：2022-12-26
发明人： NAGAO, Kenji , NISHIO, Yusuke , SASAKI, Izuru
IPC分类号： H01M4/13 , H01M4/36 , H01M4/62 , H01M10/0562
摘要： A positive electrode material 1000 according to the present disclosure includes a mixture of a positive electrode active material 110, a solid electrolyte 100, and a conductive material 140. The conductive material 140 includes a first conductive material 150 having an average long-axis diameter of 1 µm or more and a second conductive material 160 having an average particle diameter of more than 23 nm and 100 nm or less. A ratio of a volume of the positive electrode active material 110 to a sum of the volume of the positive electrode active material 110 and a volume of the solid electrolyte 100 is 50% or more and 90% or less. A battery 2000 according to the present disclosure includes a positive electrode 201 including the positive electrode material 1000, a negative electrode 203, and an electrolyte layer 202 disposed between the positive electrode 201 and the negative electrode 203.
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公开(公告)号：EP4462452A1
公开(公告)日：2024-11-13
申请号：EP22918754.7
申请日：2022-12-01
发明人： KAMBARA, Takayoshi
IPC分类号： H01B13/00 , C01B25/14 , H01G11/56 , H01M10/0562
摘要： Provided is a method for producing sulfide solid electrolyte having an argyrodite-type crystal structure, the method including mixing lithium sulfide, a phosphorus sulfide, and an ammonium halide to produce a solid electrolyte precursor, and firing the solid electrolyte precursor. The method for producing a sulfide solid electrolyte having an argyrodite-type crystal structure provides a method for easily producing a high-quality sulfide solid electrolyte without using an elemental halogen which complicates the handling or a lithium halide which has a considerably high hygroscopicity.
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公开(公告)号：EP4459738A1
公开(公告)日：2024-11-06
申请号：EP22915266.5
申请日：2022-12-16
IPC分类号： H01M10/44 , H01M10/052 , H01M10/0562 , H01M10/0585 , H01M10/48
摘要： [Abstract] To provide a means for more effectively suppressing a short circuits in a secondary battery. A method for charging a secondary battery including a positive electrode current collector, a positive electrode active material layer, a solid electrolyte layer, and a negative electrode current collector in this order and utilizing a deposition-dissolution reaction of metallic lithium as a reaction of a negative electrode, the method having a multi-stage charging step, and comprising at least: a first charging step in which the secondary battery is charged at a first current density I1 to deposit metallic lithium on a surface on the solid electrolyte layer side of the negative electrode current collector to form a deposited Li layer that is a part of a negative electrode active material layer and that comprises the metallic lithium; and a second charging step in which the secondary battery is charged at a second current density I2 greater than the first current density I1 after the first charging step to increase a thickness of the deposited Li layer, wherein the first charging step includes performing pausing at least once or discharging at least once, in which the secondary battery is charged at the first current density I1 so that an SOC does not exceed 4.5%.
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公开(公告)号：EP4459729A2
公开(公告)日：2024-11-06
申请号：EP24163297.5
申请日：2024-03-13
发明人： TANAKA, Takumi
IPC分类号： H01M10/0525 , H01M10/0585 , H01M50/105 , H01M50/121 , H01M50/124 , H01M50/133 , H01M10/0562 , H01M10/12
摘要： There is provided a method of producing an all-solid-state battery 100, the method including: preparing a structure 60 that includes, in the following order, a first exterior member 10, a first resin layer 20, a cell laminate 30, a second resin layer 40, and a second exterior member 50; and applying pressure to the structure 60 in a thickness direction of the structure 60, at a temperature at which the first resin layer 10 and the second resin layer 20 melt or soften.
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公开(公告)号：EP4086071B1
公开(公告)日：2024-11-06
申请号：EP22170776.3
申请日：2022-04-29
IPC分类号： B30B11/00 , B30B15/02 , H01M4/04 , H01M4/139 , H01M6/18 , H01M10/04 , H01M10/052 , H01M10/0562 , H01M10/0565 , H01M10/0585
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公开(公告)号：EP4456233A1
公开(公告)日：2024-10-30
申请号：EP22911199.2
申请日：2022-12-20
发明人： TSUNODA, Kei , YAMAUCHI, Hideo
IPC分类号： H01M10/054 , H01M4/58 , H01M4/587 , H01M10/0562 , H01M10/0585
摘要： Provided is an all-solid-state sodium-ion secondary battery having an excellent charge-discharge efficiency and capable of increasing the energy density. An all-solid-state sodium-ion secondary battery 1 includes: a solid electrolyte layer 2 having a first principal surface 2a and a second principal surface 2b opposed to each other; a positive electrode layer 3 provided on the first principal surface 2a of the solid electrolyte layer 2; and a negative electrode layer 4 provided on the second principal surface 2b of the solid electrolyte layer 2, wherein a capacity ratio of the negative electrode layer 4 to the positive electrode layer 3 (negative electrode layer/positive electrode layer) is not less than 0.10 and not more than 1.10.
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