公开(公告)号：US20160233031A1

公开(公告)日：2016-08-11

申请号：US15097565

申请日：2016-04-13

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Junpei Momo ,  Hiroatsu Todoriki ,  Kuniharu Nomoto

IPC: H01G11/32 ,  H01G11/42 ,  H01G11/40 ,  H01G11/38 ,  H01G11/06 ,  H01G11/52 ,  H01G11/66 ,  H01G11/56 ,  H01G11/74 ,  H01G11/78 ,  H01G11/86 ,  H01M4/04 ,  H01M4/587 ,  H01M4/62 ,  H01M4/133 ,  H01M4/1393 ,  H01M10/0525 ,  H01M10/058 ,  H01G11/34

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.

Abstract translation: 提供了具有高输出功率的蓄电装置，其中比表面积增加同时保持其活性材料的易于处理的粒度。 蓄电装置具备包括正极集电体和正极活性物质层的正极，负极集电体和负极活性物质层的负极以及电解质。 负极活性物质层包括负极活性物质，该负极活性物质是多个石墨片彼此重叠并具有间隙的粒子。 粒子的粒径优选为1μm〜50μm。 此外，优选电解质与石墨片之间的间隙接触。

公开(公告)号：US08685570B2

公开(公告)日：2014-04-01

申请号：US13923428

申请日：2013-06-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takuya Miwa ,  Kuniharu Nomoto ,  Nobuhiro Inoue

IPC: H01M4/13 ,  H01M4/88

CPC classification number: H01G9/042 ,  B82Y30/00 ,  H01M4/5825 ,  H01M4/622 ,  H01M4/625 ,  H01M10/04 ,  Y10T29/417 ,  Y10T29/49115

Abstract: At least one of an aqueous solution A containing lithium, an aqueous solution B containing iron, manganese, cobalt, or nickel, and an aqueous solution C containing a phosphoric acid includes graphene oxide. The aqueous solution A is dripped into the aqueous solution C, so that a mixed solution E including a precipitate D is prepared. The mixed solution E is dripped into the aqueous solution B, so that a mixed solution G including a precipitate F is prepared. The mixed solution G is subjected to heat treatment in a pressurized atmosphere, so that a mixed solution H is prepared, and the mixed solution H is then filtered. Thus, particles of a compound containing lithium and oxygen which have a small size are obtained.

Abstract translation: 含有锂的水溶液A，含有铁，锰，钴或镍的水溶液B和含有磷酸的水溶液C中的至少一种包括氧化石墨烯。 将水溶液A滴入水溶液C中，制备包含析出物D的混合溶液E。 将混合溶液E滴加到水溶液B中，从而制备包含沉淀物F的混合溶液G. 混合溶液G在加压气氛中进行热处理，制备混合溶液H，然后过滤混合溶液H. 因此，获得了具有小尺寸的含有锂和氧的化合物的颗粒。

公开(公告)号：US11962013B2

公开(公告)日：2024-04-16

申请号：US17178286

申请日：2021-02-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Masaki Yamakaji ,  Kuniharu Nomoto

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/58

CPC classification number: H01M4/625 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/622 ,  H01M4/0404 ,  H01M4/5825

Abstract: The positive electrode active material layer includes a plurality of particles of a positive electrode active material and a reaction mixture where reduced graphene oxide is bonded to a polymer having a functional group as a side chain. The reduced graphene oxide has a sheet-like shape and high conductivity and thus functions as a conductive additive by being in contact with the plurality of particles of the positive electrode active material. The reaction mixture serves as an excellent binder since the reduced graphene oxide is bonded to the polymer. Therefore, even a small amount of the reaction mixture where the reduced graphene oxide is covalently bonded to the polymer excellently serves as a conductive additive and a binder.

公开(公告)号：US11799084B2

公开(公告)日：2023-10-24

申请号：US17692502

申请日：2022-03-11

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya Miwa ,  Kuniharu Nomoto ,  Junpei Momo

IPC: H01M4/00 ,  H01M4/58 ,  C01D15/02 ,  C01G45/00 ,  C01G49/00 ,  C01G51/00 ,  C01G53/00 ,  C30B7/10 ,  H01M4/36 ,  H01M4/587 ,  C30B29/14 ,  H01M4/02

CPC classification number: H01M4/5825 ,  C01D15/02 ,  C01G45/006 ,  C01G49/009 ,  C01G51/006 ,  C01G53/006 ,  C30B7/10 ,  H01M4/364 ,  H01M4/587 ,  C30B29/14 ,  H01M2004/028 ,  H01M2220/30

Abstract: A hydrothermal synthesis for LiFePO4 is provided. First, each raw material solution is prepared using a degassed water in advance, second, those solution are mixed by dripping in a fixed order, and then those materials are reacted in a hydrothermal synthesis, so that LiFePO4 is obtained in a predesigned form.

公开(公告)号：US10270097B2

公开(公告)日：2019-04-23

申请号：US14948965

申请日：2015-11-23

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya Miwa ,  Kuniharu Nomoto ,  Junpei Momo

IPC: H01M4/56 ,  H01M4/587 ,  H01M4/36 ,  H01M4/58 ,  C01D15/02 ,  C01G45/00 ,  C01G49/00 ,  C01G51/00 ,  C01G53/00 ,  C30B7/10 ,  C30B29/14 ,  H01M4/02

Abstract: An object is to reduce variation in shape of crystals that are to be formed. Solutions containing respective raw materials are made in an environment where an oxygen concentration is lower than that in air, the solutions containing the respective raw materials are mixed in an environment where an oxygen concentration is lower than that in air to form a mixture solution, and with use of the mixture solution, a composite oxide is formed by a hydrothermal method.

公开(公告)号：US10096428B2

公开(公告)日：2018-10-09

申请号：US15622995

申请日：2017-06-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya Miwa ,  Kuniharu Nomoto ,  Nobuhiro Inoue

IPC: H01G9/042 ,  H01M10/04 ,  H01M4/58 ,  H01M4/62 ,  B82Y30/00

Abstract: At least one of an aqueous solution A containing lithium, an aqueous solution B containing iron, manganese, cobalt, or nickel, and an aqueous solution C containing a phosphoric acid includes graphene oxide. The aqueous solution A is dripped into the aqueous solution C, so that a mixed solution E including a precipitate D is prepared. The mixed solution E is dripped into the aqueous solution B, so that a mixed solution G including a precipitate F is prepared. The mixed solution G is subjected to heat treatment in a pressurized atmosphere, so that a mixed solution H is prepared, and the mixed solution H is then filtered. Thus, particles of a compound containing lithium and oxygen which have a small size are obtained.

公开(公告)号：US08883351B2

公开(公告)日：2014-11-11

申请号：US13629645

申请日：2012-09-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01M4/583 ,  H01G9/042 ,  H01M4/04 ,  H01G11/22 ,  H01M6/16 ,  H01M4/139 ,  H01M10/0566 ,  H01M4/62 ,  H01G11/32 ,  C01B31/04

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 ,  H01M10/0525 ,  H01M10/0566 ,  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.

Abstract translation: 石墨烯的形成方法包括在第一导电层上形成包括氧化石墨烯的层的步骤; 并且在其中浸入作为工作电极的第一导电层和作为对电极的第二导电层的电解质中，提供氧化石墨烯的还原反应发生到第一导电层的电位。 至少包括正电极，负极，电解质和隔膜的蓄电装置的制造方法包括通过所述正极和负极中的一个或两个的活性物质层形成石墨烯的步骤 形成方法。

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：US11296322B2

公开(公告)日：2022-04-05

申请号：US16862651

申请日：2020-04-30

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Teppei Oguni ,  Takeshi Osada ,  Toshihiko Takeuchi ,  Kuniharu Nomoto

IPC: H01M4/587 ,  B82Y40/00 ,  H01M4/133 ,  C25D5/50 ,  C25D5/48 ,  C25D13/12 ,  H01M4/04 ,  C25D13/02 ,  B82Y30/00 ,  H01M4/70 ,  H01M4/66 ,  H01M4/1393

Abstract: Graphene is formed with a practically uniform thickness on an uneven object. The object is immersed in a graphene oxide solution, and then taken out of the solution and dried; alternatively, the object and an electrode are immersed therein and voltage is applied between the electrode and the object used as an anode. Graphene oxide is negatively charged, and thus is drawn to and deposited on a surface of the object, with a practically uniform thickness. After that, the object is heated in vacuum or a reducing atmosphere, so that the graphene oxide is reduced to be graphene. In this manner, a graphene layer with a practically uniform thickness can be formed even on a surface of the uneven object.