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公开(公告)号：US20190044184A1
公开(公告)日：2019-02-07
申请号：US16074654
申请日：2017-02-20
Inventor： Akihiko Takada , Fumiharu Niina , Katsunori Yanagida
IPC: H01M10/0525 , H01M10/04 , H01M10/0566 , H01M4/505
Abstract: In a nonaqueous electrolyte secondary battery, a positive electrode contains a lithium transition metal oxide and a phosphoric acid compound. A nonaqueous electrolyte contains a dinitrile represented by a general formula: NC-A-CN (A represents a linear hydrocarbon having 1 to 10 carbon atoms or a hydrocarbon which contains a main chain having 1 to 10 carbon atoms and at least one side chain having 3 or less carbon atoms); an ether represented by a general formula: R1—O—R2—O—R3 (R1 and R3 each represent a group which contains a main chain having 1 to 3 carbon atoms, and R2 represents a chain hydrocarbon group having 1 to 3 carbon atoms); and a fluorophosphate salt.
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公开(公告)号：US12206088B2
公开(公告)日：2025-01-21
申请号：US17296312
申请日：2019-10-31
Inventor： Kouhei Tsuzuki , Akihiko Takada , Yuki Morikawa , Hirokazu Wada , Katsunori Yanagida
Abstract: A negative electrode for a nonaqueous electrolyte secondary battery, said negative electrode comprising a negative-electrode current collector, and a negative-electrode active material layer provided upon the negative-electrode current collector, wherein the negative-electrode active material layer includes a negative-electrode active material and a styrene-butadiene rubber, and the glass transition temperature (Tg) of the styrene-butadiene rubber in an area that extends 10% in the thickness direction from the surface of the reverse side of the negative-electrode active material layer from the negative-electrode current collector is higher than that of the styrene-butadiene rubber in an area that extends 10% in the thickness direction from the surface of the negative-electrode current collector side of the negative-electrode active material layer.
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公开(公告)号：US10024848B2
公开(公告)日：2018-07-17
申请号：US14785572
申请日：2014-04-16
Inventor： Akihiko Takada , Kiyoshi Hashimotodani , Yusuke Kitagawa
IPC: G01N33/543 , B01L3/00 , B01J19/00
Abstract: A flow channel device includes a flow channel section and an introduction channel section. The flow channel section includes a flow channel in which a detection object flows and a wall surface surrounding the flow channel. The introduction channel section includes an introduction channel having a first end connected to the flow channel and a second end connected to an introduction port, and a wall surface surrounding the introduction channel. At least a part of the wall surface surrounding the introduction channel is a curved surface protruding toward the introduction channel.
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公开(公告)号：US11024837B2
公开(公告)日：2021-06-01
申请号：US16321900
申请日：2017-07-28
Inventor： Akihiko Takada , Sho Urata , Kouhei Tuduki , Fumiharu Niina , Katsunori Yanagida
IPC: H01M4/131 , H01M4/133 , H01M4/1393 , H01M4/36 , H01M10/0525 , H01M10/0587 , H01M4/587 , H01M4/62 , H01M4/1391
Abstract: A nonaqueous electrolyte secondary battery according to an embodiment includes an electrode body, which is formed by winding a positive electrode and a negative electrode through a separator and then compressing into a flat shape, and a nonaqueous electrolyte. The positive electrode contains a lithium transition metal oxide which contains tungsten oxide adhering to the particle surfaces thereof. The negative electrode contains a negative electrode active material, which has particle surfaces coated with an amorphous carbon film, and at least one of polyacrylic acid and a salt thereof. The pressure acting in the thickness direction of the electrode body is 5×10−2 MPa or more.
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Patent Agency Ranking
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.
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公开(公告)号：US20180212269A1
公开(公告)日：2018-07-26
申请号：US15743395
申请日：2016-09-20
Inventor： Akihiko Takada , Fumiharu Niina , Katsunori Yanagida
IPC: H01M10/052 , H01M10/0569 , H01M10/0567 , H01M10/0587 , H01M10/04 , H01M4/66 , H01M4/131 , H01M4/485 , H01M4/50 , H01M4/52
CPC classification number: H01M10/052 , H01M4/131 , H01M4/485 , H01M4/50 , H01M4/52 , H01M4/5825 , H01M4/662 , H01M10/0459 , H01M10/0525 , H01M10/0567 , H01M10/0569 , H01M10/0587 , H01M2004/027 , H01M2004/028 , H01M2220/30 , H01M2300/0028 , H01M2300/0068 , Y02E60/122 , Y02T10/7011
Abstract: It is an object of the present disclosure to provide a nonaqueous electrolyte secondary battery with improved room-temperature regeneration. The present disclosure provides a nonaqueous electrolyte secondary battery that includes an electrode assembly having a structure in which a positive plate and a negative plate are stacked with a separator therebetween and also includes a nonaqueous electrolyte. The positive plate contains a lithium transition metal oxide, an element belonging to the group 5 or 6 of the periodic table, and a phosphoric acid compound. The nonaqueous electrolyte contains 1,2-dimethoxyethane.
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公开(公告)号：US11942645B2
公开(公告)日：2024-03-26
申请号：US16640226
申请日：2018-11-02
Inventor： Akihiko Takada , Masanori Sugimori , Nobuhiro Hirano , Yuki Morikawa , Yasunori Baba , Katsunori Yanagida
IPC: H01M4/66 , H01M2/16 , H01M4/36 , H01M4/58 , H01M4/62 , H01M10/0525 , H01M50/417 , H01M50/423 , H01M50/431 , H01M50/434 , H01M50/451 , H01M50/457 , H01M50/46 , H01M4/02
CPC classification number: H01M4/668 , H01M4/366 , H01M4/58 , H01M4/624 , H01M10/0525 , H01M50/417 , H01M50/423 , H01M50/431 , H01M50/434 , H01M50/451 , H01M50/457 , H01M50/46 , H01M2004/021 , H01M2004/027 , H01M2004/028
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.
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公开(公告)号：US10930968B2
公开(公告)日：2021-02-23
申请号：US16074654
申请日：2017-02-20
Inventor： Akihiko Takada , Fumiharu Niina , Katsunori Yanagida
IPC: H01M10/0525 , H01M10/04 , H01M10/0566 , H01M4/525 , H01M4/505 , H01M4/62 , H01M10/0567 , H01M4/485
Abstract: In a nonaqueous electrolyte secondary battery, a positive electrode contains a lithium transition metal oxide and a phosphoric acid compound. A nonaqueous electrolyte contains a dinitrile represented by a general formula: NC-A-CN (A represents a linear hydrocarbon having 1 to 10 carbon atoms or a hydrocarbon which contains a main chain having 1 to 10 carbon atoms and at least one side chain having 3 or less carbon atoms); an ether represented by a general formula: R1—O—R2—O—R3 (R1 and R3 each represent a group which contains a main chain having 1 to 3 carbon atoms, and R2 represents a chain hydrocarbon group having 1 to 3 carbon atoms); and a fluorophosphate salt.
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公开(公告)号：US20190181423A1
公开(公告)日：2019-06-13
申请号：US16321900
申请日：2017-07-28
Inventor： Akihiko Takada , Sho Urata , Kouhei Tuduki , Fumiharu Niina , Katsunori Yanagida
IPC: H01M4/131 , H01M10/0525 , H01M4/133 , H01M4/1391 , H01M4/1393 , H01M4/36
Abstract: A nonaqueous electrolyte secondary battery according to an embodiment includes an electrode body, which is formed by winding a positive electrode and a negative electrode through a separator and then compressing into a flat shape, and a nonaqueous electrolyte. The positive electrode contains a lithium transition metal oxide which contains tungsten oxide adhering to the particle surfaces thereof. The negative electrode contains a negative electrode active material, which has particle surfaces coated with an amorphous carbon film, and at least one of polyacrylic acid and a salt thereof. The pressure acting in the thickness direction of the electrode body is 5×10−2 MPa or more.
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