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公开(公告)号：US20240405258A1
公开(公告)日：2024-12-05
申请号：US18800446
申请日：2024-08-12
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Tomoya FUTAMURA , Tamae MORIWAKA , Takahiro KAWAKAMI , Junpei MOMO , Nobuhiro INOUE
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：US20230327207A1
公开(公告)日：2023-10-12
申请号：US18141841
申请日：2023-05-01
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
CPC classification number: H01M10/0568 , H01M4/366 , H01M4/587 , H01M4/364 , H01M4/38 , H01M4/386 , H01M4/625 , H01M10/0525 , H01M10/054 , H01M2004/021
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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3.发明公开公开(公告)号：US20230216019A1
公开(公告)日：2023-07-06
申请号：US18119422
申请日：2023-03-09
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Nobuhiro INOUE , Sachiko KATANIWA , Kazutaka KURIKI , Junpei MOMO
IPC: H01M4/583 , H01M10/0525 , H01M4/04
CPC classification number: H01M4/583 , H01M10/0525 , H01M4/0404 , H01M2004/027
Abstract: An object is to suppress electrochemical decomposition of an electrolyte solution and the like at a negative electrode in a lithium ion battery or a lithium ion capacitor; thus, irreversible capacity is reduced, cycle performance is improved, or operating temperature range is extended. A negative electrode for a power storage device including a negative electrode current collector, a negative electrode active material layer which is over the negative electrode current collector and includes a plurality of particles of a negative electrode active material, and a film covering part of the negative electrode active material. The film has an insulating property and lithium ion conductivity.
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公开(公告)号：US20200274165A1
公开(公告)日：2020-08-27
申请号：US15930707
申请日：2020-05-13
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Hiroatsu TODORIKI , Junpei MOMO , Teppei OGUNI , Nobuhiro INOUE
Abstract: To increase the conductivity and electric capacity of an electrode which includes active material particles and the like and is used in a battery, a graphene net including 1 to 100 graphene sheets is used instead of a conventionally used conduction auxiliary agent and binder. The graphene net which has a two-dimensional expansion and a three-dimensional structure is more likely to touch active material particles or another conduction auxiliary agent, thereby increasing the conductivity and the bonding strength between active material particles. This graphene net is obtained by mixing graphene oxide and active material particles and then heating the mixture in a vacuum or a reducing atmosphere.
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公开(公告)号：US20190221848A1
公开(公告)日：2019-07-18
申请号：US16361416
申请日：2019-03-22
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Hiroatsu TODORIKI , Junpei MOMO , Teppei OGUNI , Nobuhiro INOUE
CPC classification number: H01M4/624 , H01M4/0404 , H01M4/0471 , H01M4/131 , H01M4/364 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M4/587 , H01M4/625 , H01M4/627 , H01M10/052
Abstract: To increase the conductivity and electric capacity of an electrode which includes active material particles and the like and is used in a battery, a graphene net including 1 to 100 graphene sheets is used instead of a conventionally used conduction auxiliary agent and binder. The graphene net which has a two-dimensional expansion and a three-dimensional structure is more likely to touch active material particles or another conduction auxiliary agent, thereby increasing the conductivity and the bonding strength between active material particles. This graphene net is obtained by mixing graphene oxide and active material particles and then heating the mixture in a vacuum or a reducing atmosphere.
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Patent Agency Ranking
公开(公告)号：US20170279111A1
公开(公告)日：2017-09-28
申请号：US15618460
申请日：2017-06-09
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Nobuhiro INOUE , Kai KIMURA , Sachiko KATANIWA , Ryota TAJIMA
IPC: H01M4/131 , H01G11/06 , H01G11/28 , H01G11/46 , H01G11/50 , H01G11/58 , H01G11/66 , H01G11/68 , H01M10/0525 , H01M4/133 , H01M4/134 , H01M4/1393 , H01M4/36 , H01M4/38 , H01M4/48 , H01M4/485 , H01M4/62 , 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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公开(公告)号：US20160020035A1
公开(公告)日：2016-01-21
申请号：US14802326
申请日：2015-07-17
Applicant: Semiconductor Energy Laboratory Co., LTD.
Inventor： Nobuhiro INOUE , Ryota TAJIMA , Kazutaka KURIKI , Mitsuhiro ICHIJO , Yoshikazu HIURA , Mai SUGIKAWA
IPC: H01G9/042 , H01M4/136 , H01M4/131 , H01M10/0525 , H01M4/134
CPC classification number: H01G11/30 , H01M4/0428 , H01M4/13 , H01M4/131 , H01M4/133 , H01M4/134 , H01M4/136 , H01M4/139 , H01M4/366 , H01M4/386 , H01M4/5825 , H01M4/587 , H01M10/0427 , H01M10/0431 , H01M10/0436 , H01M10/052 , H01M10/058 , H01M10/0585 , H01M10/425 , H01M2220/20 , H01M2220/30 , Y02E60/122 , Y02E60/13 , Y02P70/54 , Y02T10/7011 , Y02T10/7022
Abstract: A power storage device with high capacity is provided. Alternatively, a power storage device with excellent cycle characteristics is provided. Alternatively, a power storage device with high charge and discharge efficiency is provided. Alternatively, a power storage device with a long lifetime is provided. A negative electrode active material is provided over a negative electrode current collector, and the negative electrode active material layer is formed in such a manner that first layers and second layers are alternately stacked. The first layer includes at least an element selected from Si, Mg, Ca, Ga, Al, Ge, Sn, Pb, Sb, Bi, Ag, Zn, Cd, As, Hg, and In. The second layer includes oxygen and the same element as the one included in the first layer.
Abstract translation: 提供高容量的蓄电装置。 或者，提供具有优异的循环特性的蓄电装置。 或者，提供具有高充放电效率的蓄电装置。 或者，提供寿命长的蓄电装置。 在负极集电体上设置负极活性物质，负极活性物质层以第一层和第二层交替堆叠的方式形成。 第一层至少包括选自Si，Mg，Ca，Ga，Al，Ge，Sn，Pb，Sb，Bi，Ag，Zn，Cd，As，Hg和In中的一种元素。 第二层包括氧和与第一层中包含的元素相同的元素。
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公开(公告)号：US20160012981A1
公开(公告)日：2016-01-14
申请号：US14859703
申请日：2015-09-21
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Nobuhiro INOUE , Kai KIMURA , Sachiko KATANIWA , Ryota TAJIMA
IPC: H01G11/46 , H01G11/06 , H01G11/68 , H01G11/28 , H01M4/485 , H01M4/131 , H01M4/134 , H01M4/36 , H01M4/38 , H01G11/50 , H01G11/58
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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公开(公告)号：US20150255828A1
公开(公告)日：2015-09-10
申请号：US14636930
申请日：2015-03-03
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Junpei MOMO , Nobuhiro INOUE , Takahiro KAWAKAMI , Yohei MOMMA
IPC: H01M10/052 , H01M4/38 , H01M10/0585 , H01M4/583
CPC classification number: H01M10/052 , H01M4/133 , H01M4/134 , H01M4/382 , H01M4/386 , H01M4/583 , H01M4/587 , H01M10/0585 , H01M2004/025 , H01M2010/4292 , H01M2220/30
Abstract: To provide a lithium-ion secondary battery including a first electrode including a first electrode active substance and a second electrode including a second electrode active substance and a third electrode active substance. The second electrode active substance has higher charge and discharge efficiency than the first electrode active substance. The third electrode active substance has lower charge and discharge efficiency than the second electrode active substance. The product of the capacity of the second electrode active substance and the difference between the charge and discharge efficiency of the second electrode active substance and charge and discharge efficiency of the first electrode active substance is greater than the product of the capacity of the third electrode active substance and the difference between the charge and discharge efficiency of the first electrode active substance and the charge and discharge efficiency of the third electrode active substance. The compounding proportion of the second electrode active substance in the total of the second electrode active substance and the third electrode active substance is less than the compounding proportion of the third electrode active substance in the total of the second electrode active substance and the third electrode active substance.
Abstract translation: 提供一种锂离子二次电池，其包括第一电极和第二电极，所述第一电极包括第一电极活性物质和包括第二电极活性物质和第三电极活性物质的第二电极。 第二电极活性物质的充放电效率高于第一电极活性物质。 第三电极活性物质的充放电效率比第二电极活性物质低。 第二电极活性物质的容量与第二电极活性物质的充放电效率的差异与第一电极活性物质的充放电效率的差大于第三电极活性物质的容量乘积 物质和第一电极活性物质的充放电效率与第三电极活性物质的充放电效率之间的差异。 第二电极活性物质与第二电极活性物质和第三电极活性物质的合计比例小于第二电极活性物质和第三电极活性物质的总量中第三电极活性物质的配合比例 物质。
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10.发明申请公开(公告)号：US20210408516A1
公开(公告)日：2021-12-30
申请号：US17365196
申请日：2021-07-01
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Nobuhiro INOUE , Sachiko KATANIWA , Kazutaka KURIKI , Junpei MOMO
Abstract: An object is to suppress electrochemical decomposition of an electrolyte solution and the like at a negative electrode in a lithium ion battery or a lithium ion capacitor; thus, irreversible capacity is reduced, cycle performance is improved, or operating temperature range is extended. A negative electrode for a power storage device including a negative electrode current collector, a negative electrode active material layer which is over the negative electrode current collector and includes a plurality of particles of a negative electrode active material, and a film covering pan of the negative electrode active material. The film has an insulating property and lithium ion conductivity.
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