公开(公告)号：US20170338489A1

公开(公告)日：2017-11-23

申请号：US15586341

申请日：2017-05-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya MIWA ,  Yumiko YONEDA ,  Teppei OGUNI

IPC: H01M4/58 ,  C01B25/45 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/5825 ,  C01B25/45 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/40 ,  H01M10/0525 ,  H01M2004/028

Abstract: A composite oxide with high diffusion rate of lithium is provided. Alternatively, a lithium-containing complex phosphate with high diffusion rate of lithium is provided. Alternatively, a positive electrode active material with high diffusion rate of lithium is provided. Alternatively, a lithium ion battery with high output is provided. Alternatively, a lithium ion battery that can be manufactured at low cost is provided. A positive electrode active material is formed through a first step of mixing a lithium compound, a phosphorus compound, and water, a second step of adjusting pH by adding a first aqueous solution to a first mixed solution formed in the first step, a third step of mixing an iron compound with a second mixed solution formed in the second step, a fourth step of performing heat treatment under a pressure more than or equal to 0.1 MPa and less than or equal to 2 MPa at a highest temperature more than 100° C. and less than or equal to 119° C. on a third mixed solution formed in the third step with a pH of more than or equal to 3.5 and less than or equal to 5.0.

公开(公告)号：US20170331144A1

公开(公告)日：2017-11-16

申请号：US15586354

申请日：2017-05-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Teppei OGUNI ,  Junya GOTO ,  Ai NAKAGAWA

IPC: H01M10/058 ,  H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/44

CPC classification number: H01M10/058 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/446 ,  H01M2300/004 ,  Y02T10/7011

Abstract: In initial charge and discharge, decomposition products or a gas is generated, degrading a battery. At least one of solvents (e.g., ethylene carbonate) used for an electrolytic solution is brought into contact with a positive electrode and a negative electrode and then charge is performed to some degree, and after that, a different solvent or electrolytic solution (e.g., ethyl methyl carbonate or vinylene carbonate) was added to adjust the electrolytic solution and then charge is performed. Through this process, stable coating films are formed in initial charge and discharge, which stably inhibits a side reaction between the electrolytic solution and an active material.

公开(公告)号：US20170187040A1

公开(公告)日：2017-06-29

申请号：US15381152

申请日：2016-12-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yumiko YONEDA ,  Teppei OGUNI ,  Takuya MIWA ,  Masaki YAMAKAJI ,  Ayae TSURUTA

IPC: H01M4/587 ,  H01M2/16 ,  H01M10/0587 ,  H01M4/1393 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/36 ,  H01M2/14

CPC classification number: H01M4/587 ,  C01B32/225 ,  C01B32/23 ,  C01P2006/40 ,  H01M2/145 ,  H01M2/1626 ,  H01M2/1653 ,  H01M2/1673 ,  H01M4/0404 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/364 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/027 ,  H01M2220/20

Abstract: To provide a manufacturing method of graphene oxide that allows mass production through a relatively simple process, at low costs, and with safety and efficiency. A hydrogen peroxide solution, sulfuric acid, and flake graphite are put in a reaction container, and the mixture is stirred to obtain expansion graphite. The synthesized expansion graphite is washed not with pure water but with a saturated aqueous solution of magnesium sulfate (MgSO4) or an organic solvent, whereby a large amount of sulfuric acid is contained between graphite layers. The expansion graphite is subjected to heat treatment or microwave irradiation to form expanded graphite, and a graphite layer is peeled by ultrasonic treatment and then oxidized to form a graphene compound.

公开(公告)号：US20170170521A1

公开(公告)日：2017-06-15

申请号：US15371820

申请日：2016-12-07

Applicant: Semiconductor Energy Laboratory Co., LTD

Inventor： Kazuhei NARITA ,  Ryota TAJIMA ,  Teppei OGUNI

IPC: H01M10/0569 ,  H01M4/66 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0568 ,  G04G19/00 ,  H01G11/52 ,  H01G11/60 ,  H01G11/28 ,  H01G11/62 ,  H01G11/32 ,  H01G11/86 ,  H01M4/525 ,  H01M2/16

Abstract: To provide a power storage device whose charge and discharge characteristics are unlikely to be degraded by heat treatment. To provide a power storage device that is highly safe against heat treatment. The power storage device includes a positive electrode, a negative electrode, a separator, an electrolytic solution, and an exterior body. The separator is located between the positive electrode and the negative electrode. The separator contains polyphenylene sulfide or solvent-spun regenerated cellulosic fiber. The electrolytic solution contains a solute and two or more kinds of solvents. The solute contains LiBETA. One of the solvents is propylene carbonate.

公开(公告)号：US20170139508A1

公开(公告)日：2017-05-18

申请号：US15416610

申请日：2017-01-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Teppei OGUNI ,  Kiyofumi OGINO ,  Hisao IKEDA

IPC: G06F3/044 ,  H01B1/04 ,  H05K3/06 ,  H05K1/09

CPC classification number: H05K1/09 ,  G06F3/044 ,  G06F2203/04103 ,  G06F2203/04111 ,  H01B1/04 ,  H01L27/323 ,  H01L27/3244 ,  H01L51/5246 ,  H01L2251/5307 ,  H01L2251/5315 ,  H05K1/092 ,  H05K3/06 ,  H05K3/12 ,  H05K3/1283 ,  H05K2201/0323 ,  H05K2201/10151

Abstract: A novel element is provided. A novel film formation method is provided. A novel element manufacturing method is provided. Furthermore, a film including graphene is formed at low cost and high yield. The element includes a first electrode and a second electrode located apart from the first electrode. The first electrode and the second electrode include graphene. The film including graphene is formed through a first step of forming a film including graphene oxide over a substrate, a second step of immersing the film including graphene oxide in an acidic solution, and a third step of reducing graphene oxide included in the film including graphene oxide. Furthermore, before graphene oxide included in the film including graphene oxide is reduced, the film including graphene oxide is selectively removed by a photolithography technique.

公开(公告)号：US20160118689A1

公开(公告)日：2016-04-28

申请号：US14919943

申请日：2015-10-22

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Teppei OGUNI ,  Kazutaka KURIKI ,  Ai NAKAGAWA ,  Aya UCHIDA

IPC: H01M10/0568 ,  H01M4/58 ,  H01M10/0569 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/136 ,  H01M4/62

CPC classification number: H01M10/0568 ,  H01M4/5825 ,  H01M4/587 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2220/20 ,  H01M2220/30 ,  H01M2300/0025 ,  Y02E60/122

Abstract: A lithium-ion storage battery with a favorable cycle life at high temperatures is provided. A lithium-ion storage battery with a longer lifetime due to reduction of the capacity decrease is provided. A lithium-ion storage battery where reaction between a positive electrode active material and an electrolyte in an electrolyte solution is inhibited is provided. One embodiment of the present invention is a lithium-ion storage battery including a positive electrode, a negative electrode, an electrolyte solution. The positive electrode includes an active material, the active material includes a metal, and the electrolyte solution includes at least one of LiTFSA and LiFSA. Note that, in the lithium-ion storage battery of one embodiment of the present invention, the positive electrode may include a current collector, and the current collector may include Al. In the lithium-ion storage battery, the electrolyte solution may further include LiPF6.

Abstract translation: 提供了在高温下具有良好循环寿命的锂离子蓄电池。 提供了由于容量降低而具有更长寿命的锂离子蓄电池。 提供一种锂电池蓄电池，其中正极活性物质与电解质溶液中的电解质之间的反应被抑制。 本发明的一个实施方案是包括正极，负极，电解质溶液的锂离子蓄电池。 正极包括活性物质，活性物质包含金属，电解液包含LiTFSA和LiFSA中的至少一种。 另外，在本发明的一个实施方式的锂离子蓄电池中，正极也可以含有集电体，集电体可以包含Al。 在锂离子蓄电池中，电解质溶液还可以包含LiPF 6。

公开(公告)号：US20160104885A1

公开(公告)日：2016-04-14

申请号：US14969949

申请日：2015-12-15

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya HIROHASHI ,  Teppei OGUNI

IPC: H01M4/38 ,  H01M4/583 ,  H01M10/0525

CPC classification number: H01M4/386 ,  B82Y30/00 ,  B82Y40/00 ,  H01G11/32 ,  H01M4/583 ,  H01M4/587 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2220/30 ,  Y02E60/122 ,  Y02E60/13 ,  Y02P70/54 ,  Y02T10/7011 ,  Y02T10/7022

Abstract: An object is to provide graphene which has high conductivity and is permeable to ions of lithium or the like. Another object is to provide, with use of the graphene, a power storage device with excellent charging and discharging characteristics. Graphene having a hole inside a ring-like structure formed by carbon and nitrogen has conductivity and is permeable to ions of lithium or the like. The nitrogen concentration in graphene is preferably higher than or equal to 0.4 at. % and lower than or equal to 40 at. %. With use of such graphene, ions of lithium or the like can be preferably made to pass; thus, a power storage device with excellent charging and discharging characteristics can be provided.

Abstract translation: 目的是提供具有高导电性并且可渗透锂等离子的石墨烯。 另一个目的是提供使用石墨烯的具有优异充电和放电特性的蓄电装置。 在由碳和氮形成的环状结构中具有孔的石墨烯具有导电性，并且可透过锂等离子。 石墨烯中的氮浓度优选高于或等于0.4at。 ％且低于或等于40at。 ％。 通过使用这样的石墨烯，可以优选使锂等的离子通过; 因此，可以提供具有优异充电和放电特性的蓄电装置。

公开(公告)号：US20150200419A1

公开(公告)日：2015-07-16

申请号：US14669570

申请日：2015-03-26

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Nobuhiro INOUE ,  Junpei MOMO ,  Hiroatsu TODORIKI ,  Teppei OGUNI

IPC: H01M10/0525 ,  H01M10/0569 ,  H01M4/587 ,  H01M4/583 ,  H01M4/36

CPC classification number: H01M10/0525 ,  B82Y30/00 ,  H01M4/366 ,  H01M4/583 ,  H01M4/587 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2300/0028 ,  Y02E60/122 ,  Y02T10/7011

Abstract: To provide a carbon-based negative electrode material which can be used with an electrolyte containing PC as a main ingredient, a carbon-based negative electrode material having a graphene layer structure is crystalline and has pores. That is, the crystal structure of the carbon-based negative electrode material is distorted more significantly than that of graphite. Accordingly, the carbon-based negative electrode material has a larger interlayer distance between graphenes than graphite. It has been shown that such a negative electrode material can be used for a secondary battery which contains an electrolyte containing PC as a main ingredient.

Abstract translation: 为了提供可与含PC的电解质一起使用的碳类负极材料作为主要成分，具有石墨烯层结构的碳类负极材料为结晶性并具有孔。 也就是说，碳基负极材料的晶体结构比石墨的晶体结构变得更显着。 因此，碳系负极材料的石墨层之间的层间距离比石墨多。 已经表明，这种负极材料可以用于含有以PC为主要成分的电解质的二次电池。

公开(公告)号：US20140225569A1

公开(公告)日：2014-08-14

申请号：US14173029

申请日：2014-02-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Teppei OGUNI

IPC: H02J7/00

CPC classification number: H02J7/0093 ,  H02J7/0075

Abstract: When a hole in a separator is clogged, the cycle characteristics of a battery might be lowered and the internal resistance of a battery might be increased to reduce the output. Thus, a means for suppression of or recovery from degradation due to a clogged separator in a battery such as a lithium-ion secondary battery is provided. When reverse pulse current is supplied multiple times during charge, a separator is prevented from being clogged and a voltage increase (increase in internal resistance) during charge is suppressed, so that charge can be normally performed repeatedly.

Abstract translation: 当分离器中的孔堵塞时，电池的循环特性可能降低，并且可能增加电池的内部电阻以降低输出。 因此，提供了用于抑制或恢复由于诸如锂离子二次电池的电池中的分隔器堵塞而导致的劣化的装置。 当在充电期间多次提供反向脉冲电流时，防止隔板被堵塞，并且抑制充电期间的电压增加（内部电阻的增加），从而可以反复正常地进行充电。

公开(公告)号：US20130084495A1

公开(公告)日：2013-04-04

申请号：US13625111

申请日：2012-09-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Ryota TAJIMA ,  Kunio HOSOYA ,  Takeshi OSADA ,  Teppei OGUNI ,  Shunpei YAMAZAKI

IPC: H01M4/38 ,  H01M4/583 ,  H01M4/02 ,  H01M4/64 ,  B82Y30/00

CPC classification number: H01M4/134 ,  H01M2/1673 ,  H01M2/18 ,  H01M4/366 ,  H01M4/587 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/025 ,  H01M2004/027

Abstract: Provided is a power storage device in which charge/discharge capacity is high, charge/discharge can be performed at high speed, and deterioration in battery characteristics due to charge/discharge is small. The power storage device includes a negative electrode including an active material including a plurality of prism-like protrusions. A cross section of each of the plurality of prism-like protrusions, which is perpendicular to the axis of each protrusion, is a polygonal shape or a polygonal shape including a curve, such as a cross shape, an H shape, an L shape, an I shape, a T shape, a U shape, or a Z shape. The active material including the plurality of prism-like protrusions may be covered with graphene.

Abstract translation: 提供了充放电容量高的电力存储装置，能够高速进行充放电，充放电时的电池特性的劣化小。 蓄电装置包括负极，其包括包含多个棱柱状突起的活性物质。 多个棱柱状突起的垂直于每个突起的轴线的横截面是多边形或多边形，包括十字形，H形，L形等的曲线， I形，T形，U形或Z形。 包括多个棱柱状突起的活性材料可以被石墨烯覆盖。