公开(公告)号：US20130273428A1

公开(公告)日：2013-10-17

申请号：US13644263

申请日：2012-10-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takahiro KAWAKAMI ,  Hiroatsu Todoriki ,  Teppei Oguni ,  Takeshi Osada ,  Shunpei Yamazaki

IPC: H01M4/131

CPC classification number: H01M4/366 ,  H01M4/131 ,  H01M4/483 ,  H01M4/505 ,  H01M4/523 ,  H01M4/525 ,  H01M4/625 ,  H01M10/0525 ,  Y02E60/122

Abstract: A power storage device a positive electrode including a positive electrode active material layer and a negative electrode including a negative electrode active material layer. The positive electrode active material layer includes a plurality of particles of x[Li2MnO3]-(1-x)[LiCo1/3Mn1/3Ni1/3O2] (obtained by assigning 0.5 to x, for example) which is a positive electrode active material, and multilayer graphene with which the plurality of particles of the positive electrode active material are at least partly connected to each other. In the multilayer graphene, a plurality of graphenes are stacked in a layered manner. The graphene contains a six-membered ring composed of carbon atoms, a poly-membered ring which is a seven or more-membered ring composed of carbon atoms, and an oxygen atom bonded to one or more of the carbon atoms in the six-membered ring and the poly-membered ring, which is a seven or more-membered ring.

Abstract translation: 蓄电装置，包括正极活性物质层和含有负极活性物质层的负极的正极。 正极活性物质层包含多个x [Li 2 MnO 3] - （1-x）[LiCo1 / 3Mn1 / 3Ni1 / 3O2]（通过分配例如0.5〜x的x）作为正极活性物质的粒子， 以及所述多个正极活性物质的所述粒子至少部分地彼此连接的多层石墨烯。 在多层石墨烯中，以分层的方式层叠多个石墨烯。 石墨烯含有由碳原子组成的六元环，由碳原子构成的七元或更多元环的多元环，和与六元环中的一个或多个碳原子键合的氧原子 环和多元环，其为七元或多元环。

公开(公告)号：US12183477B2

公开(公告)日：2024-12-31

申请号：US16991320

申请日：2020-08-12

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Junpei Momo ,  Hiroatsu Todoriki ,  Kuniharu Nomoto

IPC: C01B32/23 ,  H01B1/04 ,  H01G11/06 ,  H01G11/32 ,  H01G11/38 ,  H01G11/86 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/058 ,  H01M4/02

Abstract: A power storage device with high output is provided, in which the specific surface area is increased while keeping the easy-to-handle particle size of its active material. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte. The negative electrode active material layer includes a negative electrode active material which is a particle in which a plurality of slices of graphite is overlapped with each other with a gap therebetween. It is preferable that the grain diameter of the particle be 1 μm to 50 μm. Further, it is preferable that the electrolyte be in contact with the gap between the slices of graphite.

公开(公告)号：US11990621B2

公开(公告)日：2024-05-21

申请号：US18205264

申请日：2023-06-02

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroatsu Todoriki ,  Yumiko Saito ,  Takahiro Kawakami ,  Kuniharu Nomoto ,  Mikio Yukawa

IPC: H01M4/583 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/192 ,  C01B32/23 ,  H01G9/042 ,  H01G11/22 ,  H01G11/32 ,  H01G11/36 ,  H01M4/04 ,  H01M4/133 ,  H01M4/139 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/62 ,  H01M6/16 ,  H01M10/0566 ,  H01M10/0525

CPC classification number: H01M4/5835 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/192 ,  C01B32/23 ,  H01G9/042 ,  H01G11/22 ,  H01G11/32 ,  H01G11/36 ,  H01M4/0438 ,  H01M4/133 ,  H01M4/139 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/62 ,  H01M6/16 ,  H01M10/0566 ,  H01M10/0525 ,  Y02E60/13

Abstract: The formation method of graphene includes the steps of forming a layer including graphene oxide over a first conductive layer; and supplying a potential at which the reduction reaction of the graphene oxide occurs to the first conductive layer in an electrolyte where the first conductive layer as a working electrode and a second conductive layer with a as a counter electrode are immersed. A manufacturing method of a power storage device including at least a positive electrode, a negative electrode, an electrolyte, and a separator includes a step of forming graphene for an active material layer of one of or both the positive electrode and the negative electrode by the formation method.

公开(公告)号：US09293770B2

公开(公告)日：2016-03-22

申请号：US13826710

申请日：2013-03-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroatsu Todoriki ,  Mikio Yukawa ,  Yumiko Saito ,  Masaki Yamakaji ,  Rika Yatabe ,  Tatsuya Ikenuma

IPC: H01M4/62 ,  H01M4/133 ,  H01M4/64 ,  H01M4/131 ,  H01M4/136 ,  H01M4/58 ,  C01B31/04 ,  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 atomic ratio of oxygen to carbon is greater than or equal to 0.405.

Abstract translation: 提供了用作用于形成具有高导电性的活性材料层的导电添加剂的原料的石墨烯氧化物，其具有少量的导电添加剂。 提供了使用石墨烯氧化物作为导电添加剂的非水系二次电池用正极。 作为非水系二次电池用正极中的导电性添加剂的原料，使用氧化石墨烯，在氧化石墨烯中，氧与碳的原子比大于或等于0.405。

公开(公告)号：US09275798B2

公开(公告)日：2016-03-01

申请号：US14263000

申请日：2014-04-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Junpei Momo ,  Yumiko Saito ,  Rie Matsubara ,  Hiroatsu Todoriki

IPC: H01G9/00 ,  H01G11/06 ,  H01G11/24 ,  H01G11/30 ,  H01G11/50 ,  H01G11/86

CPC classification number: H01G9/0029 ,  H01G11/06 ,  H01G11/24 ,  H01G11/30 ,  H01G11/50 ,  H01G11/86 ,  H01G2009/0007 ,  Y02E60/13 ,  Y02T10/7022 ,  Y10T29/417

Abstract: A thin energy storage device having high capacity is obtained. An energy storage device having high output is obtained. A current collector and an active material layer are formed in the same manufacturing step. The number of manufacturing steps of an energy storage device is reduced. The manufacturing cost of an energy storage device is suppressed. One embodiment of the present invention relates to a method for manufacturing of an electric double layer capacitor, or a lithium ion capacitor, which includes porous metal electrodes formed by removing a metal from an alloy foil, and an electrolyte provided therebetween. A surface area per volume of the porous structure is greater than or equal to 100 m2/cm3.

Abstract translation: 获得了具有高容量的薄能量储存装置。 获得具有高输出的能量存储装置。 在相同的制造步骤中形成集电体和活性物质层。 能量储存装置的制造步骤数量减少。 能量储存装置的制造成本被抑制。 本发明的一个实施例涉及一种双电层电容器或锂离子电容器的制造方法，其包括通过从合金箔中除去金属而形成的多孔金属电极，以及设置在其间的电解质。 多孔结构体积的表面积大于或等于100m 2 / cm 3。

公开(公告)号：US20130156942A1

公开(公告)日：2013-06-20

申请号：US13710497

申请日：2012-12-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Masaki YAMAKAJI ,  Rika Yatabe ,  Hiroatsu Todoriki

IPC: H01M4/04

CPC classification number: H01M4/0404 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/623 ,  H01M4/625 ,  Y02E60/122 ,  Y02P70/54

Abstract: To provide a positive electrode for a lithium-ion secondary battery, which is highly filled with a positive electrode active material and has a high-density positive electrode active material layer. To provide a lithium-ion secondary battery having high capacity and improved cycle characteristics with use of the positive electrode. After graphene oxide is dispersed in a dispersion medium, a positive electrode active material is added and mixed to form a mixture. A binder is added to the mixture and mixed to form a positive electrode paste. The positive electrode paste is applied to a positive electrode current collector and the dispersion medium contained in the positive electrode paste is evaporated, and then, the graphene oxide is reduced, so that a positive electrode active material layer containing graphene is formed over the positive electrode current collector.

Abstract translation: 为了提供高纯度的正极活性物质并具有高密度正极活性物质层的锂离子二次电池用正极。 使用正极来提供具有高容量和改进的循环特性的锂离子二次电池。 将氧化石墨烯分散在分散介质中后，加入正极活性物质并混合形成混合物。 向混合物中加入粘合剂并混合以形成正极浆料。 将正极浆料涂布在正极集电体上，使正极浆料中所含的分散介质蒸发，然后氧化石墨烯被还原，从而在正极上形成含有石墨烯的正极活性物质层 集电器