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公开(公告)号：US20190207203A1
公开(公告)日：2019-07-04
申请号：US16256305
申请日：2019-01-24
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Kai KIMURA , Tatsuya IKENUMA , Nobuhiro INOUE , Teppei OGUNI
IPC: H01M4/133 , H01M4/38 , H01M4/587 , H01M4/62 , H01M4/134 , H01M10/052 , H01M10/0525
CPC classification number: H01M4/133 , H01M4/134 , H01M4/366 , H01M4/386 , H01M4/587 , H01M4/622 , H01M10/052 , H01M10/0525 , H01M2004/021 , H01M2220/20 , Y02E60/122
Abstract: To provide a power storage device with a high capacity. To provide a power storage device with a high energy density. To provide a highly reliable power storage device. To provide a long-life power storage device. To provide an electrode with a high capacity. To provide an electrode with a high energy density. To provide a highly reliable electrode. To provide a long-life electrode. The power storage device includes a first electrode and a second electrode. The first electrode includes a first current collector and a first active material layer. The first active material layer includes a first active material and a first binder. The first active material is graphite. A separation strength F of the first electrode that is measured when the first active material layer is separated from the first current collector after the first electrode is immersed in a solution at a temperature higher than or equal to 20° C. and lower than or equal to 70° C. for longer than or equal to three hours is higher than or equal to 0.05 N/cm and lower than or equal to 5 N/cm per unit width of a sample that is separated.
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公开(公告)号：US20180190972A1
公开(公告)日：2018-07-05
申请号：US15907317
申请日：2018-02-28
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Nobuhiro INOUE , Kai KIMURA , Sachiko KATANIWA , Ryota TAJIMA
IPC: H01M4/131 , H01M4/36 , H01G11/28 , H01G11/46 , H01M10/0525 , H01M4/62 , H01M4/485 , H01M4/48 , H01M4/38 , H01G11/06 , H01M4/1393 , H01M4/134 , H01M4/133 , H01G11/68 , H01G11/66 , H01G11/58 , H01G11/50 , H01M4/02
CPC classification number: H01M4/131 , H01G11/06 , H01G11/28 , H01G11/46 , H01G11/50 , H01G11/58 , H01G11/66 , H01G11/68 , H01M4/133 , H01M4/134 , H01M4/1393 , H01M4/362 , H01M4/366 , H01M4/386 , H01M4/483 , H01M4/485 , H01M4/62 , H01M4/628 , H01M10/0525 , H01M2004/027 , Y02E60/122 , Y02E60/13 , Y02P70/54 , Y02T10/7022
Abstract: A decomposition reaction of an electrolyte solution and the like caused as a side reaction of charge and discharge is minimized in repeated charge and discharge of a lithium ion battery or a lithium ion capacitor, and thus the lithium ion battery or the lithium ion capacitor can have long-term cycle performance. A negative electrode for a power storage device includes a negative electrode current collector and a negative electrode active material layer which includes a plurality of particles of a negative electrode active material. Each of the particles of the negative electrode active material has an inorganic compound film, containing a first inorganic compound on part of its surface. The negative electrode active material layer has a film in contact with an exposed part of the negative electrode active material and part of the inorganic compound film. The film contains an organic compound and a second inorganic compound.
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33.发明申请公开(公告)号：US20180005761A1
公开(公告)日：2018-01-04
申请号：US15685726
申请日：2017-08-24
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Nobuhiro INOUE , Ryota TAJIMA , Tamae MORIWAKA , Junpei MOMO , Teppei OGUNI , Kai KIMURA , Kazutaka KURIKI , Shunpei YAMAZAKI
IPC: H01G9/042 , H01G11/26 , H01G11/50 , H01G11/06 , H01M4/133 , H01M4/02 , H01M4/134 , H01M4/36 , H01M10/0525
CPC classification number: H01G9/042 , H01G11/06 , H01G11/26 , H01G11/50 , H01M4/02 , H01M4/133 , H01M4/134 , H01M4/366 , H01M10/0525 , Y02E60/122 , Y02E60/13
Abstract: To improve the reliability of a power storage device. A granular active material including carbon is used, and a net-like structure is formed on part of a surface of the granular active material. In the net-like structure, a carbon atom included in the granular active material is bonded to a silicon atom or a metal atom through an oxygen atom. Formation of the net-like structure suppresses reductive decomposition of an electrolyte solution, leading to a reduction in irreversible capacity. A power storage device using the above active material has high cycle performance and high reliability.
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公开(公告)号：US20170338470A1
公开(公告)日：2017-11-23
申请号：US15535596
申请日：2015-12-16
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Nobuhiro INOUE , Hiroyuki MIYAKE , Yuika SATO
CPC classification number: H01M4/364 , H01M4/0404 , H01M4/0459 , H01M4/0461 , H01M4/134 , H01M4/1395 , H01M4/386 , H01M4/483 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M4/62 , H01M10/052 , H01M10/0525 , H01M2004/027 , Y02T10/7011
Abstract: Although a material containing silicon attracts attention as a high-capacity negative electrode active material, it has a problem of having a large irreversible capacity at the initial charge and discharge cycle.As a negative electrode active material, a particle which is a mixture of silicon, lithium metasilicate, and lithium oxide is used. Because lithium metasilicate and lithium oxide are already contained in the particle of the negative electrode active material, a compound containing lithium and oxygen (lithium orthosilicate and lithium metasilicate), which is a cause of the irreversible capacity at the initial charge, is not generated any more. This enables a negative electrode active material with a small irreversible capacity.
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公开(公告)号：US20170271713A1
公开(公告)日：2017-09-21
申请号：US15608439
申请日：2017-05-30
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Tomoya FUTAMUA , Tamae MORIWAKA , Takahiro KAWAKAMI , Junpei MOMO , Nobuhiro INOUE
IPC: H01M10/0525 , H01M4/66 , H01M4/36 , H01M4/13
CPC classification number: H01M10/0525 , C30B1/00 , H01M4/13 , H01M4/136 , H01M4/362 , H01M4/5825 , H01M4/665 , H01M4/668 , H01M2004/021 , H01M2004/028 , Y02E60/122 , Y02P70/54
Abstract: A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte provided between the positive electrode and the negative electrode. The positive electrode includes a positive electrode current collector and a positive electrode active material layer over the positive electrode current collector. The positive electrode active material layer includes a plurality of lithium-containing, composite oxides each of which is expressed by LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) that is a general formula. The lithium-containing composite oxide is a flat single crystal particle in which the length in the b-axis direction is shorter than each of the lengths in the a-axis direction and the c-axis direction. The lithium-containing composite oxide is provided over the positive electrode current collector so that the b-axis of the single crystal particle intersects with the surface of the positive electrode current collector.
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Patent Agency Ranking
公开(公告)号：US20170084922A1
公开(公告)日：2017-03-23
申请号：US15368993
申请日：2016-12-05
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Tomoya FUTAMURA , Tamae MORIWAKA , Takahiro KAWAKAMI , Junpei MOMO , Nobuhiro INOUE
IPC: H01M4/58 , H01M10/0525
CPC classification number: H01M10/0525 , C30B1/00 , H01M4/13 , H01M4/136 , H01M4/362 , H01M4/5825 , H01M4/665 , H01M4/668 , H01M2004/021 , H01M2004/028 , Y02E60/122 , Y02P70/54
Abstract: A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte provided between the positive electrode and the negative electrode. The positive electrode includes a positive electrode current collector and a positive electrode active material layer over the positive electrode current collector. The positive electrode active material layer includes a plurality of lithium-containing composite oxides each of which is expressed by LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) that is a general formula. The lithium-containing composite oxide is a flat single crystal particle in which the length in the b-axis direction is shorter than each of the lengths in the a-axis direction and the c-axis direction. The lithium-containing composite oxide is provided over the positive electrode current collector so that the b-axis of the single crystal particle intersects with the surface of the positive electrode current collector.
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公开(公告)号：US20160190576A1
公开(公告)日：2016-06-30
申请号：US14972796
申请日：2015-12-17
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hiroyuki MIYAKE , Nobuhiro INOUE , Takuya HIROHASHI , Yuika SATO
IPC: H01M4/485 , H01M10/0525
CPC classification number: H01M4/483 , C01B33/113 , H01M4/131 , H01M10/0525 , Y02E60/122
Abstract: Silicon oxide which is an oxide containing at least silicon, in which part of silicon is replaced by boron, aluminum, or gallium, is provided.
Abstract translation: 提供氧化硅，其是至少含有硅的氧化物，其中硅的一部分被硼，铝或镓代替。
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公开(公告)号：US20140370379A1
公开(公告)日：2014-12-18
申请号：US14294481
申请日：2014-06-03
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Nobuhiro INOUE , Junpei MOMO , Ryota TAJIMA , Naoki KURIHARA
IPC: H01M4/36
CPC classification number: H01M4/134 , H01M4/0416 , H01M4/1395 , H01M4/38 , H01M4/623 , H01M4/80 , H01M10/052
Abstract: To increase the capacity and energy density of a secondary battery by using a novel material as a material for a negative electrode in order to increase the amount of lithium ions transferred in charge and discharge. In the case where the negative electrode includes a current collector and a negative electrode active material layer, gallium is used as the negative electrode active material, and the negative electrode active material layer contains resin at 2 wt % or more, preferably 10 wt % or more, adhesion between the current collector and the negative electrode active material can be increased. This inhibits separation between the current collector and the negative electrode active material due repeated expansion and contraction, resulting in longer lifetime of the secondary battery.
Abstract translation: 为了通过使用新型材料作为负极材料来增加二次电池的容量和能量密度，以增加在充电和放电中转移的锂离子的量。 在负极包括集电体和负极活性物质层的情况下，使用镓作为负极活性物质，负极活性物质层含有2重量％以上，优选为10重量％以上的树脂，或者 此外，可以提高集电体与负极活性物质的粘附性。 由于反复的膨胀和收缩，这抑制了集电体和负极活性物质的分离，导致二次电池的寿命更长。
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公开(公告)号：US20230378473A1
公开(公告)日：2023-11-23
申请号：US18231429
申请日：2023-08-08
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Hiroatsu TODORIKI , Junpei MOMO , Teppei OGUNI , Nobuhiro INOUE
CPC classification number: H01M4/624 , H01M4/0404 , H01M4/131 , H01M4/0471 , H01M4/364 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M4/587 , H01M4/625 , H01M4/627 , H01M10/052
Abstract: Described herein is a positive electrode comprising an active material particle, an acetylene black particle and net-like graphene. The positive electrode can be used in a battery.
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公开(公告)号：US20200280101A1
公开(公告)日：2020-09-03
申请号：US16875094
申请日：2020-05-15
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Nobuhiro INOUE , Masaki YAMAKAJI , Jun ISHIKAWA , Kazuhei NARITA
IPC: H01M10/0568 , H01M4/36 , H01M4/587 , H01M4/38 , H01M4/62 , H01M10/0525 , H01M10/054
Abstract: A storage battery includes positive and negative electrodes and an electrolytic solution. The negative electrode includes a first element and carbon. The first element is any of silicon, tin, gallium, aluminum, germanium, lead, antimony, bismuth, silver, zinc, cadmium, and indium. The negative electrode includes an active material and a first layer in contact with a surface of the active material. The first layer has a thickness of 10 nm to 1000 nm inclusive. The electrolytic solution contains first and second cations. The first cation is one or more of a lithium ion, a sodium ion, a calcium ion, and a magnesium ion. The second cation is an imidazolium cation or a tertiary sulfonium cation.
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