-
公开(公告)号：US20240105958A1
公开(公告)日：2024-03-28
申请号：US18267234
申请日：2021-12-06
Inventor： Masanori Sugimori , Yusuke Fukumoto , Yuji Yokoyama , Nobuhiro Hirano
IPC: H01M4/62 , B82Y30/00 , H01M4/1393 , H01M4/38 , H01M10/0525
CPC classification number: H01M4/625 , B82Y30/00 , H01M4/1393 , H01M4/386 , H01M10/0525 , H01M2004/027
Abstract: Provided is a carbon nanotube dispersion liquid for an electrode slurry such that it is possible to inhibit a decrease in a charge-discharge cycle characteristic. A carbon nanotube dispersion liquid for an electrode slurry according to one aspect of the present disclosure includes carbon nanotubes having a diameter of 0.4 to 2 nm, a dispersant, and a dispersion medium. In a Raman spectroscopy spectrum, the carbon nanotubes have a G/D ratio, which is the ratio of the peak intensities of the G-band (1560 to 1600 cm−1) and the D-band (1310 to 1350 cm−1), within the range of 50 to 200, and in a volume-based particle size distribution via a laser diffraction method, the carbon nanotubes have 3 to 5 peaks, and if the peaks are, from the small particle diameter side, P1, P2, . . . , Pn, the greatest frequency peak is in the range pf P2 to Pn-1.
-
公开(公告)号：US20220037740A1
公开(公告)日：2022-02-03
申请号：US17414172
申请日：2019-12-11
Inventor： Masanori Sugimori , Yasunori Baba , Katsunori Yanagida , Nobuhiro Hirano
IPC: H01M50/446 , H01M50/449
Abstract: This non-aqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The separator includes; a porous base material; a first filler layer which contains phosphate particles as a primary component and is arranged on one surface of the base material; and a second filler layer which is arranged on the other surface of the base material and which contains at least one type of compound selected from the group consisting of an aromatic polyamide, an aromatic polyimide and an aromatic polyamideimide. The BET specific surface area of the phosphate particles is 5-100 m2/g. The content of the aforementioned compounds in the second filler layer 32 is 15 mass % or more.
-
公开(公告)号：US20210159498A1
公开(公告)日：2021-05-27
申请号：US16640128
申请日：2018-12-14
Inventor： Natsumi Goto , Masanori Sugimori , Yasunori Baba , Katsunori Yanagida , Nobuhiro Hirano
IPC: H01M4/58 , H01M50/414 , H01M50/46 , H01M50/457 , H01M10/0525
Abstract: In a non-aqueous electrolyte secondary battery according to one exemplary embodiment, a separator includes a substrate, a first filler layer containing phosphate particles and formed on at least one surface of the substrate, and a second filler layer containing inorganic particles and formed on a surface of the first filler layer on the side of the at least one surface of the substrate. The phosphate particles have a BET specific surface area of 5 m2/g or more and 100 m2/g or less.
-
公开(公告)号：US12224452B2
公开(公告)日：2025-02-11
申请号：US16637034
申请日：2018-11-02
Inventor： Yuki Morikawa , Masanori Sugimori , Yasunori Baba , Katsunori Yanagida , Nobuhiro Hirano
IPC: H01M2/16 , H01M4/131 , H01M4/36 , H01M4/58 , H01M4/66 , H01M10/0525 , H01M50/417 , H01M50/423 , H01M50/451 , H01M50/457 , H01M50/46 , H01M4/02
Abstract: In a nonaqueous electrolyte secondary battery, a separator includes a substrate, a first filler layer disposed on one side of the substrate and containing phosphate salt particles, and a second filler layer disposed on the other side of the substrate and containing inorganic particles. The separator is disposed between a positive electrode and a negative electrode in such a manner that the side of the substrate which bears the first filler layer is directed to the positive electrode side.
-
公开(公告)号：US11695117B2
公开(公告)日：2023-07-04
申请号：US16640128
申请日：2018-12-14
Inventor： Natsumi Goto , Masanori Sugimori , Yasunori Baba , Katsunori Yanagida , Nobuhiro Hirano
IPC: H01M4/58 , H01M50/414 , H01M50/457 , H01M50/46 , H01M10/0525 , H01M50/451 , H01M50/443 , H01M4/02 , H01M50/417 , H01M50/42 , H01M50/426
CPC classification number: H01M4/58 , H01M10/0525 , H01M50/414 , H01M50/443 , H01M50/451 , H01M50/457 , H01M50/46 , H01M50/417 , H01M50/42 , H01M50/426 , H01M2004/021 , H01M2004/027 , H01M2004/028
Abstract: In a non-aqueous electrolyte secondary battery according to one exemplary embodiment, a separator includes a substrate, a first filler layer containing phosphate particles and formed on at least one surface of the substrate, and a second filler layer containing inorganic particles and formed on a surface of the first filler layer on the side of the at least one surface of the substrate. The phosphate particles have a BET specific surface area of 5 m2/g or more and 100 m2/g or less.
-
Patent Agency Ranking
公开(公告)号：US11621458B2
公开(公告)日：2023-04-04
申请号：US16638998
申请日：2018-08-30
Inventor： Yasunori Baba , Masanori Sugimori , Katsunori Yanagida , Nobuhiro Hirano
IPC: H01M50/449 , H01M10/0525 , H01M50/411 , H01M50/431
Abstract: In a nonaqueous electrolyte secondary battery, a separator includes a substrate, a first filler layer containing phosphate salt particles, and a second filler layer interposed between the substrate and the first filler layer and containing inorganic particles. The separator is disposed between a positive electrode and a negative electrode in such a manner that the first filler layer and the second filler layer are directed to the positive electrode side. Further, a resin layer is disposed between the positive electrode and the first filler layer.
-
公开(公告)号：US20200251744A1
公开(公告)日：2020-08-06
申请号：US16640226
申请日：2018-11-02
Inventor： Akihiko Takada , Masanori Sugimori , Nobuhiro Hirano , Yuki Morikawa , Yasunori Baba , Katsunori Yanagida
Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The separator has a multilayer structure in which a first filler layer containing phosphate particles, a porous resin substrate, and a second filler layer containing inorganic particles having higher heat resistance than the phosphate particles are stacked in this order from the negative electrode side. The first filler layer is disposed on the porous resin substrate in such a manner that the surface of the first filler layer faces the surface of the negative electrode. The phosphate particles have a BET specific surface area in the range of 5 m2/g or more and 100 m2/g or less.
-
公开(公告)号：US11949097B2
公开(公告)日：2024-04-02
申请号：US17271348
申请日：2019-02-25
Inventor： Yasunori Baba , Masanori Sugimori , Katsunori Yanagida , Nobuhiro Hirano
IPC: H01M4/36 , H01M4/62 , H01M4/76 , H01M50/431 , H01M50/443
CPC classification number: H01M4/364 , H01M4/621 , H01M4/624 , H01M4/762 , H01M50/431 , H01M50/443
Abstract: In a nonaqueous electrolyte secondary battery a separator includes a porous substrate, a first filler layer, and a second filler layer. The first filler layer comprises phosphate particles having a BET specific surface area of 5 to 100 m2/g and polyvinylidene fluoride and is formed on a first surface that faces the positive electrode side of the substrate and contacts the positive electrode. The second filler comprises inorganic particles which have a melting point higher than that of the phosphate particles and is formed on at least one of a second surface that faces the negative electrode side of the substrate and the area between the substrate and the first filler layer. The content of the polyvinylidene fluoride in the first filler layer is 10 to 50 mass % and is higher in a region on the positive electrode side than in a region on the substrate side.
-
公开(公告)号：US11569493B2
公开(公告)日：2023-01-31
申请号：US16631049
申请日：2018-09-28
Inventor： Takashi Ko , Yasunori Baba , Katsunori Yanagida , Nobuhiro Hirano , Fumiharu Niina
Abstract: A positive electrode including a positive electrode current collector, an intermediate layer disposed on the positive electrode current collector and including a conductive agent and inorganic particles, and a positive electrode mixture layer disposed on the intermediate layer and including a positive electrode active material and a hydrogen phosphate salt represented by the general formula MaHbPO4 (wherein a satisfies 1≤a≤2, b satisfies 1≤b≤2, and M includes at least one element selected from alkali metals and alkaline earth metals), the positive electrode satisfying 0.5≤X≤3.0, 1.0≤Y≤7.0, and 0.07≤X/Y≤3.0 wherein X is the mass ratio (mass %) of the hydrogen phosphate salt relative to the total mass of the positive electrode active material and Y is the mass ratio (mass %) of the conductive agent relative to the total mass of the intermediate layer.
-
公开(公告)号：US11509021B2
公开(公告)日：2022-11-22
申请号：US16637026
申请日：2018-07-27
Inventor： Masanori Sugimori , Yasunori Baba , Katsunori Yanagida , Nobuhiro Hirano
IPC: H01M4/00 , H01M50/46 , H01M4/136 , H01M50/44 , H01M50/431
Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode, wherein the separator includes an inorganic filler layer which includes a first filler layer containing phosphate salt particles and a second filler layer disposed on the first filler layer and containing inorganic particles more heat resistant than the phosphate salt particles, and the BET specific surface area of the phosphate salt particles is in the range of not less than 5 m2/g and not more than 100 m2/g.
-
-
-
-
-
-
-
-
-
Search Results
23
records
(took 0.017 seconds)
