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公开(公告)号：US10535877B2
公开(公告)日：2020-01-14
申请号：US15736066
申请日：2016-09-20
Inventor： Kouhei Tuduki , Atsushi Fukui , Katsunori Yanagida
IPC: H01M4/587 , H01M4/583 , H01M4/36 , H01M4/62 , H01M10/0525 , H01M4/48 , H01M4/133 , H01M4/38 , H01M4/58 , H01M4/02
Abstract: A non-aqueous electrolyte secondary battery includes a non-aqueous electrolyte and an electrode body in which a positive electrode plate and a negative electrode plate are layered with a separator interposed therebetween. The positive electrode plate contains a phosphate compound. The negative electrode plate contains a graphite-based material, an amorphous/non-crystalline carbon material, and a rubber-based binder. The ratio of the coverage of the rubber-based binder on the amorphous/non-crystalline carbon material to the coverage of the rubber-based binder on the graphite-based material is more than 0 and 0.5 or less.
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公开(公告)号：US20190044179A1
公开(公告)日：2019-02-07
申请号：US16074986
申请日：2017-01-26
Inventor： Masanori Sugimori , Kouhei Tuduki , Katsunori Yanagida
Abstract: In a nonaqueous electrolyte secondary battery, a positive electrode mixture layer of a positive electrode contains a lithium transition metal oxide containing at least nickel (Ni), cobalt (Co), manganese (Mn), and tungsten (W). A negative electrode mixture layer of a negative electrode contains lithium titanate and a group-5 group-6oxide that is an oxide containing at least one selected from a group consisting of group 5 elements and group 6 elements.
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公开(公告)号：US11430983B2
公开(公告)日：2022-08-30
申请号：US16495937
申请日：2018-02-09
Inventor： Fumiharu Niina , Takashi Ko , Katsunori Yanagida
Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode containing a lithium transition metal oxide as a positive electrode active material, a negative electrode containing a carbon material as a negative electrode active material, and a nonaqueous electrolyte. The lithium transition metal oxide contains W and Si, and W and Si adhere to the surface of the carbon material constituting the negative electrode active material. The amount of W adhering to the surface of the carbon material is 2 times or less in terms of a molar ratio to the amount of Si adhering to the surface of the carbon material.
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公开(公告)号：US20220166007A1
公开(公告)日：2022-05-26
申请号：US17442219
申请日：2020-01-27
Inventor： Takashi Ko , Shinya Suzuki , Fumiharu Niina , Sho Tsuruta , Katsunori Yanagida
IPC: H01M4/36 , H01M10/0525 , H01M4/525 , H01M4/505 , H01M4/58
Abstract: In a nonaqueous electrolyte secondary battery, a positive electrode contains a positive electrode active material A. The positive electrode active material A includes: a lithium transition metal composite oxide represented by a general formula of LiaNibCocMndAleMfOg (in the formula, M is at least one element selected from Groups IV, V, and VI, and 0.8≤a≤1.2, b≥0.82, 0
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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.
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Patent Agency Ranking
公开(公告)号：US20220037640A1
公开(公告)日：2022-02-03
申请号：US17296487
申请日：2019-11-11
Inventor： Kouhei Tsuzuki , 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 carboxymethyl cellulose, wherein the molecular weight of the carboxymethyl cellulose 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 is smaller than that of the carboxymethyl cellulose 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.
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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.
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公开(公告)号：US20200266420A1
公开(公告)日：2020-08-20
申请号：US15781578
申请日：2016-12-20
Inventor： Takashi Ko , Fumiharu Niina , Katsunori Yanagida
IPC: H01M4/131 , H01M4/134 , H01M4/66 , H01M10/0525
Abstract: It is an object of the present disclosure to provide a nonaqueous electrolyte secondary battery with improved low-temperature power characteristics. A nonaqueous electrolyte secondary battery includes a positive electrode and a negative electrode. The positive electrode according to the present invention contains a lithium transition metal oxide, at least one element of a group 5 element and group 6 element in the periodic table, and a phosphoric acid compound containing a metal element and hydrogen element.
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公开(公告)号：US20190173085A1
公开(公告)日：2019-06-06
申请号：US15772701
申请日：2016-11-21
Inventor： Masanori Sugimori , Natsumi Goto , Kouhei Tuduki , Katsunori Yanagida
IPC: H01M4/525 , H01M10/0525 , H01M4/485
Abstract: A nonaqueous electrolyte secondary battery according to the present invention includes a positive electrode, a negative electrode, a separator placed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode contains a first lithium transition metal oxide in which Ni accounts for 30 mole percent or more of the total molar amount of metal elements excluding Li; a second lithium transition metal oxide in which Co and Ni account for 60 mole percent or more and 20 mole percent or less, respectively, of the total molar amount of metal elements excluding Li; and tungsten element. The negative electrode contains a lithium-titanium composite oxide.
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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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