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公开(公告)号：US20210188647A1
公开(公告)日：2021-06-24
申请号：US17263630
申请日：2019-07-30
Applicant: SEKISUI CHEMICAL CO., LTD.
Inventor： Takuya WADA , Naoki SASAGAWA
Abstract: Provided is a carbon material that is large in specific surface area, and moreover, capable of easily forming an electrode film even when any binder is substantially not contained. Provided is a carbon material that has a BET specific surface area of 100 m2/g or more, with the weight of the carbon material remaining on a sieve after shaking being 90% by weight or more with respect to 100% by weight of the carbon material put in the sieve, when 0.2 g of the carbon material packed in a cylindrical syringe of 2 cm in diameter is compressed at a pressure of 16 kN, the whole of the compressed carbon material is taken out from the syringe and put in the sieve with an aperture of 4.75 mm, and the sieve is shaken for 1 minute.
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公开(公告)号：US20220352516A1
公开(公告)日：2022-11-03
申请号：US17762127
申请日：2020-09-23
Applicant: SEKISUI CHEMICAL CO., LTD.
Inventor： Naoki SASAGAWA , Takamichi SHINOHARA
IPC: H01M4/587 , H01M10/0525 , H01M4/02
Abstract: Provided is a carbon material that can improve characteristics such as electrostatic capacitance and rate characteristics of the power storage device. A carbon material used for an electrode material of a power storage device, the carbon material having a graphene layered structure, and in a small-angle X-ray scattering spectrum of the carbon material, a slope of a straight line connecting a point indicating a scattering intensity when a natural logarithm LN (q) of a scattering vector is −1.5 and a point indicating a natural logarithm of a scattering intensity when the natural logarithm LN (q) of the scattering vector is 1.4 being −1.5 or less.
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公开(公告)号：US20220109155A1
公开(公告)日：2022-04-07
申请号：US17428881
申请日：2020-02-07
Applicant: SEKISUI CHEMICAL CO., LTD.
Inventor： Hiroshi YOSHITANI , Akira NAKASUGA , Naoki SASAGAWA
IPC: H01M4/583 , H01M4/133 , H01M4/1393 , H01M4/36 , H01M10/0525 , H01M4/62
Abstract: Provided is a carbon material-resin composite material that can enhance the capacitor capacitance or the battery capacity when used as an electrode material for an electricity storage device. A carbon material-resin composite material including a carbon material and a resin that is at least partially grafted onto the carbon material, the carbon material-resin composite material having an ionic equivalent of 0.1 mmol/g or more.
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公开(公告)号：US20220293964A1
公开(公告)日：2022-09-15
申请号：US17625553
申请日：2020-07-10
Applicant: SEKISUI CHEMICAL CO., LTD.
Inventor： Shigekatsu OONISHI , Akira NAKASUGA , Rende SUN , Naoki SASAGAWA
Abstract: Provided is a metal sheet having a carbon material capable of stably exhibiting excellent characteristics when used for an electrode of an electricity storage device. A metal sheet having a carbon material includes a porous metal sheet provided with a transition metal present on a surface and a carbon material of at least one of a carbon fiber and a carbon particle, the carbon material being formed from the porous metal sheet, the carbon material being disposed in a pore of the porous metal sheet.
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Patent Agency Ranking
公开(公告)号：US20220158187A1
公开(公告)日：2022-05-19
申请号：US17439622
申请日：2020-03-17
Applicant: SEKISUI CHEMICAL CO., LTD.
Inventor： Takahiro URAYAMA , Takuya WADA , Naoki SASAGAWA
Abstract: Provided is a composite material in which a carbon material and nanoparticles are efficiently combined to enhance the battery characteristic of a secondary battery. The composite material including a carbon material having a plurality of recesses and a plurality of protrusions and including nanoparticles that are at least partially combined with the carbon material, the composite material having a rate of the nanoparticles combined in the carbon material and the nanoparticles of 11% by weight or more.
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公开(公告)号：US20190172655A1
公开(公告)日：2019-06-06
申请号：US16324997
申请日：2017-09-27
Applicant: SEKISUI CHEMICAL CO., LTD.
Inventor： Naoki SASAGAWA , Shunji OHARA
Abstract: There is provided a carbon material that can increase both the capacitance and the output characteristic of a capacitor. A carbon material for use in an electrode material of a power storage device, comprising a first carbon material having a graphene layered structure, wherein, when an X-ray diffraction spectrum of a mixture of the carbon material and a silicon powder having a volume average particle size of 7.5±2.5 μm in a mixing ratio of 1:1 is determined, a ratio a/b between a height of a peak assigned to the graphene layered structure, a, and a height of a peak assigned to silicon, b, is 0.05 or more and 0.4 or less.
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公开(公告)号：US20220223354A1
公开(公告)日：2022-07-14
申请号：US17614082
申请日：2020-05-12
Applicant: SEKISUI CHEMICAL CO., LTD.
Inventor： Takuya WADA , Naoki SASAGAWA
IPC: H01G11/38 , H01M4/587 , H01M10/0568 , H01G11/58
Abstract: Provided is a power storage device having excellent withstand voltage performance and enabling high-voltage driving. This power storage device includes: an electrode formed of an electrode material containing a carbon material and essentially free of a binder; and an electrolytic solution including an ionic liquid including, as components, a cation and an anion.
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公开(公告)号：US20210344010A1
公开(公告)日：2021-11-04
申请号：US17271311
申请日：2019-08-26
Applicant: SEKISUI CHEMICAL CO., LTD.
Inventor： Naoki SASAGAWA , Takuya WADA
IPC: H01M4/587 , H01M4/36 , C01B32/19 , C01B32/225 , H01G11/36
Abstract: Provided is a carbon material, which can increase the capacitance in an electrical storage device. Provided is a carbon material including a carbon material that has a graphene laminated structure, where the carbon material has a BET specific surface area of 240 m2/g or more, and has a powder density of 0.5 g/cc or more when 0.1 g of the carbon material is put in a container with a cross-sectional area of 3.14 cm2 and compressed at a pressure of 16 kN.
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公开(公告)号：US20180062179A1
公开(公告)日：2018-03-01
申请号：US15556993
申请日：2016-05-10
Applicant: SEKISUI CHEMICAL CO., LTD.
Inventor： Takuya WADA , Hiroki MASUDA , Naoki SASAGAWA , Akira NAKASUGA , Shoji NOZATO
CPC classification number: H01M4/625 , C01B32/05 , C01G51/42 , C01P2006/40 , H01M4/131 , H01M4/364 , H01M4/525 , H01M4/622 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: Provided is a carbonaceous material capable of enhancing the initial charge and discharge efficiency and the cycle characteristics of lithium ion secondary batteries. The carbonaceous material is used as an electrode material for a lithium ion secondary battery and has a volume resistivity of 0.7 Ω·cm or less as measured at a pressure of 13 MPa in the form of a mixture of 5 wt % of the carbonaceous material and 95 wt % of lithium cobaltate.
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