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公开(公告)号：US20220115668A1
公开(公告)日：2022-04-14
申请号：US17556384
申请日：2021-12-20
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Hiroatsu TODORIKI , Mikio YUKAWA , Yumiko SAITO , Masaki YAMAKAJI , Rika YATABE , Tatsuya IKENUMA
Abstract: A graphene oxide used as a raw material of a conductive additive for forming an active material layer with high electron conductivity with a small amount of a conductive additive is provided. A positive electrode for a nonaqueous secondary battery using the graphene oxide as a conductive additive is provided. The graphene oxide is used as a raw material of a conductive additive in a positive electrode for a nonaqueous secondary battery and, in the graphene oxide, the atomic ratio of oxygen to carbon is greater than or equal to 0.405.
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2.发明申请NEGATIVE ELECTRODE FOR POWER STORAGE DEVICE, POWER STORAGE DEVICE, AND ELECTRICAL DEVICE 审中-公开蓄电装置用蓄电池，蓄电装置及电气装置公开(公告)号：US20150132649A1
公开(公告)日：2015-05-14
申请号：US14534275
申请日：2014-11-06
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Kiyofumi OGINO , Yumiko YONEDA , Rika YATABE , Nobuhiro INOUE
Abstract: A power storage device having high capacitance is provided. A power storage device with excellent cycle characteristics is provided. A power storage device with high charge and discharge efficiency is provided. A power storage device including a negative electrode with low resistance is provided. A negative electrode for the power storage device includes a current collector and an active material layer including a plurality of active material particles over the current collector. The active material particle is silicon, and the size of the silicon particle is greater than or equal to 0.001 μm and less than or equal to 7 μm.
Abstract translation: 提供具有高电容的蓄电装置。 提供了具有优异循环特性的蓄电装置。 提供具有高充放电效率的蓄电装置。 提供了包括具有低电阻的负极的蓄电装置。 蓄电装置的负极包括集电体和在集电体上包含多个活性物质粒子的活性物质层。 活性物质颗粒是硅，硅颗粒的尺寸大于或等于0.001μm且小于或等于7μm。
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公开(公告)号：US20230041532A1
公开(公告)日：2023-02-09
申请号：US17969422
申请日：2022-10-19
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Takahiro KAWAKAMI , Masaki YAMAKAJI , Mako MOTOYOSHI , Rika YATABE
IPC: H01M4/1393 , H01M4/131 , H01M4/133 , H01M4/1391 , H01M4/36 , H01M4/62
Abstract: A positive electrode for a nonaqueous secondary battery including an active material layer which has sufficient electron conductivity with a low ratio of a conductive additive is provided. A positive electrode for a nonaqueous secondary battery including an active material layer which is highly filled with an active material, id est, including the active material and a low ratio of a conductive additive. The active material layer includes a plurality of particles of an active material with a layered rock salt structure, graphene that is in surface contact with the plurality of particles of the active material, and a binder.
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公开(公告)号：US20220059824A1
公开(公告)日：2022-02-24
申请号：US17460483
申请日：2021-08-30
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Masaki YAMAKAJI , Takahiro KAWAKAMI , Mako MOTOYOSHI , Rika YATABE
IPC: H01M4/36 , H01M4/131 , H01M4/04 , H01M4/62 , H01M4/1391 , H01M4/136 , H01M4/1397 , H01M4/505 , H01M4/525 , H01M4/587 , H01M4/58 , H01M10/0525
Abstract: A positive electrode for a secondary battery which enables both good battery characteristics and electrode strength at a predetermined level, a secondary battery, and a method for fabricating the positive electrode for a secondary battery are provided. The positive electrode for a secondary battery includes a current collector and an active material layer over the current collector. The active material layer includes an active material, graphene, and a binder. A carbon layer is on a surface of the active material. The proportion of the graphene in the active material layer is greater than or equal to 0.1 wt % and less than or equal to 1.0 wt %.
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公开(公告)号：US20240038966A1
公开(公告)日：2024-02-01
申请号：US18376988
申请日：2023-10-05
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Takahiro KAWAKAMI , Masaki YAMAKAJI , Mako MOTOYOSHI , Rika YATABE
IPC: H01M4/1393 , H01M4/131 , H01M4/133 , H01M4/1391 , H01M4/36 , H01M4/62
CPC classification number: H01M4/1393 , H01M4/131 , H01M4/133 , H01M4/1391 , H01M4/364 , H01M4/625 , Y02E60/10
Abstract: A positive electrode for a nonaqueous secondary battery including an active material layer which has sufficient electron conductivity with a low ratio of a conductive additive is provided. A positive electrode for a nonaqueous secondary battery including an active material layer which is highly filled with an active material, id est, including the active material and a low ratio of a conductive additive. The active material layer includes a plurality of particles of an active material with a layered rock salt structure, graphene that is in surface contact with the plurality of particles of the active material, and a binder.
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Patent Agency Ranking
公开(公告)号：US20200373581A1
公开(公告)日：2020-11-26
申请号：US16986372
申请日：2020-08-06
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Hiroatsu TODORIKI , Mikio YUKAWA , Yumiko SAITO , Masaki YAMAKAJI , Rika YATABE , Tatsuya IKENUMA
Abstract: A graphene oxide used as a raw material of a conductive additive for forming an active material layer with high electron conductivity with a small amount of a conductive additive is provided. A positive electrode for a nonaqueous secondary battery using the graphene oxide as a conductive additive is provided. The graphene oxide is used as a raw material of a conductive additive in a positive electrode for a nonaqueous secondary battery and, in the graphene oxide, the atomic ratio of oxygen to carbon is greater than or equal to 0.405.
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公开(公告)号：US20170141428A1
公开(公告)日：2017-05-18
申请号：US15346932
申请日：2016-11-09
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Ai NAKAGAWA , Teppei OGUNI , Kai KIMURA , Rika YATABE
IPC: H01M10/0525 , H01M4/36 , H01M4/66 , H01M10/04 , H01M4/133 , H01M10/058 , H01M4/136 , H01M4/58 , H01M10/0567 , H01M4/587
CPC classification number: H01M10/0525 , G01R31/36 , H01M4/133 , H01M4/136 , H01M4/366 , H01M4/5825 , H01M4/587 , H01M4/62 , H01M4/626 , H01M4/661 , H01M10/0422 , H01M10/0463 , H01M10/0567 , H01M10/0568 , H01M10/0569 , H01M10/058 , H01M10/425 , H01M2010/4271 , H01M2220/30 , H01M2300/0025 , H01M2300/0037 , H02J7/0014
Abstract: A lithium-ion secondary battery with a high capacity retention rate is provided. In addition, a fabricating method of a lithium-ion secondary battery with a high capacity retention rate is provided. The lithium-ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution. The negative electrode includes a negative electrode active material layer. The electrolyte solution includes at least one of lithium bis(trifluoromethanesulfonyl)amide (LiTFSA) and lithium bis(fluorosulfonyl)amide (LiFSA). The electrolyte solution includes vinylene carbonate (VC). A coating film including lithium oxide is on a surface of the negative electrode active material layer. A fabricating method of a lithium-ion secondary battery includes a first step of enclosing a positive electrode, a negative electrode, and an electrolyte solution in an exterior body, and a second step of annealing the exterior body enclosing the positive electrode, the negative electrode, and the electrolyte solution for 24 hours or longer after the first step. The annealing in the second step is performed at a temperature higher than or equal to 80° C. and lower than or equal to 100° C.
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公开(公告)号：US20160204440A1
公开(公告)日：2016-07-14
申请号：US15075387
申请日：2016-03-21
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Hiroatsu TODORIKI , Mikio YUKAWA , Yumiko SAITO , Masaki YAMAKAJI , Rika YATABE , Tatsuya IKENUMA
IPC: H01M4/62 , C01B31/04 , H01M10/052 , H01M4/58 , H01M4/36
CPC classification number: H01M4/625 , C01B32/23 , H01M4/136 , H01M4/364 , H01M4/366 , H01M4/5825 , H01M4/624 , H01M10/052
Abstract: A graphene oxide used as a raw material of a conductive additive for forming an active material layer with high electron conductivity with a small amount of a conductive additive is provided. A positive electrode for a nonaqueous secondary battery using the graphene oxide as a conductive additive is provided. The graphene oxide is used as a raw material of a conductive additive in a positive electrode for a nonaqueous secondary battery and, in the graphene oxide, the weight ratio of oxygen to carbon is greater than or equal to 0.405.
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公开(公告)号：US20240347696A1
公开(公告)日：2024-10-17
申请号：US18753138
申请日：2024-06-25
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Takahiro KAWAKAMI , Masaki YAMAKAJI , Mako MOTOYOSHI , Rika YATABE
IPC: H01M4/1393 , H01M4/131 , H01M4/133 , H01M4/1391 , H01M4/36 , H01M4/62
CPC classification number: H01M4/1393 , H01M4/131 , H01M4/133 , H01M4/1391 , H01M4/364 , H01M4/625 , Y02E60/10
Abstract: A positive electrode for a nonaqueous secondary battery including an active material layer which has sufficient electron conductivity with a low ratio of a conductive additive is provided. A positive electrode for a nonaqueous secondary battery including an active material layer which is highly filled with an active material, id est, including the active material and a low ratio of a conductive additive. The active material layer includes a plurality of particles of an active material with a layered rock salt structure, graphene that is in surface contact with the plurality of particles of the active material, and a binder.
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10.发明申请公开(公告)号：US20180309119A1
公开(公告)日：2018-10-25
申请号：US16025109
申请日：2018-07-02
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Kiyofumi OGINO , Yumiko YONEDA (Former SAITO) , Rika YATABE , Nobuhiro INOUE
Abstract: A power storage device having high capacitance is provided. A power storage device with excellent cycle characteristics is provided. A power storage device with high charge and discharge efficiency is provided. A power storage device including a negative electrode with low resistance is provided. A negative electrode for the power storage device includes a current collector and an active material layer including a plurality of active material particles over the current collector. The active material particle is silicon, and the size of the silicon particle is greater than or equal to 0.001 μm and less than or equal to 7 μm.
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