公开(公告)号：US20220209280A1

公开(公告)日：2022-06-30

申请号：US17571846

申请日：2022-01-10

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru TAKAHASHI ,  Ryota TAJIMA ,  Takuya MIWA ,  Yuugo GOTO

IPC: H01M10/04 ,  H01M50/463

Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery that is durable even when force is externally applied thereto is provided. A cushioning material is provided in a region surrounded by an exterior body of a secondary battery, Specifically, a cushioning material is provided on the periphery of a current collector such that a sealing portion of an exterior body (film) is located outside the cushioning material.

公开(公告)号：US20180013151A1

公开(公告)日：2018-01-11

申请号：US15638444

申请日：2017-06-30

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yumiko YONEDA ,  Takuya MIWA

IPC: H01M6/10 ,  H01M10/04 ,  H01M2/26 ,  H01M10/0525 ,  H01M4/58

CPC classification number: H01M6/10 ,  H01M2/263 ,  H01M4/1397 ,  H01M4/364 ,  H01M4/5825 ,  H01M10/0431 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2010/4278 ,  H01M2220/10 ,  H01M2220/20 ,  H01M2220/30 ,  Y02E60/122

Abstract: A positive electrode active material includes a plurality of groups of particles. The plurality of groups of particles has a particle diameter of more than or equal to 300 nm and less than or equal to 3 μm. Each of the groups includes two or more particles. The two or more particles are each a lithium-containing complex phosphate including one or more of iron, nickel, manganese, and cobalt. The group of particles includes a first particle and a second particle each having a major diameter and a minor diameter in the upper surface when seen from a predetermined direction. The major diameters of the first and second particles are substantially parallel to each other. The major diameter of the first particle is two to six times larger than the minor diameter of the first particle and the minor diameter of the first particle is more than or equal to 20 nm and less than or equal to 130 nm.

公开(公告)号：US20170222193A1

公开(公告)日：2017-08-03

申请号：US15492015

申请日：2017-04-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota TAJIMA ,  Minoru TAKAHASHI ,  Junya GOTO ,  Takuya MIWA

IPC: H01M2/02 ,  H01M10/0585 ,  H01M10/0525

CPC classification number: H01M2/0275 ,  H01M2/021 ,  H01M2/0277 ,  H01M2/18 ,  H01M2/26 ,  H01M4/13 ,  H01M10/0436 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/0585 ,  H01M2220/30

Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery that is durable even when force is externally applied thereto is provided. A region that is easily partly bent and a region that is not easily partly bent owing to a protective material provided in the region are intentionally formed to obtain the durable secondary battery.

公开(公告)号：US20150333360A1

公开(公告)日：2015-11-19

申请号：US14710005

申请日：2015-05-12

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Ryota TAJIMA ,  Minoru TAKAHASHI ,  Junya GOTO ,  Takuya MIWA

IPC: H01M10/04

CPC classification number: H01M2/0275 ,  H01M2/021 ,  H01M2/0277 ,  H01M2/18 ,  H01M2/26 ,  H01M4/13 ,  H01M10/0436 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/0585 ,  H01M2220/30

Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery that is durable even when force is externally applied thereto is provided. A region that is easily partly bent and a region that is not easily partly bent owing to a protective material provided in the region are intentionally formed to obtain the durable secondary battery.

Abstract translation: 在将具有比金属罐低的强度的膜用作二次电池的外部主体的情况下，设置在由外部主体包围的区域中的集电体，设置在外部主体的表面上的活性物质层 集电器等可能会在外部施加到二次电池上时损坏。 提供即使在外部施加力时也耐用的二次电池。 有意地形成易于部分弯曲的区域和由于设置在该区域中的保护材料而不容易部分弯曲的区域，以获得耐用的二次电池。

公开(公告)号：US20140166946A1

公开(公告)日：2014-06-19

申请号：US14178535

申请日：2014-02-12

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya MIWA ,  Kuniharu Nomoto ,  Nobuhiro Inoue

IPC: H01M4/62

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：US20200303739A1

公开(公告)日：2020-09-24

申请号：US16893726

申请日：2020-06-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya MIWA ,  Yumiko YONEDA ,  Teppei OGUNI

IPC: H01M4/58 ,  C01B25/45

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：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：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：US20150340664A1

公开(公告)日：2015-11-26

申请号：US14717615

申请日：2015-05-20

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Minoru TAKAHASHI ,  Yuugo GOTO ,  Yumiko YONEDA ,  Takuya MIWA ,  Ryota TAJIMA

IPC: H01M2/02

CPC classification number: H01M2/0275 ,  H01M2/021 ,  H01M2/0287 ,  H01M2/30 ,  H01M10/0436 ,  H01M2220/30

Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery which is resistant to external force is obtained. An opening is provided in a central portion of the secondary battery, and a terminal is formed in the opening. An outer edge of the secondary battery is fixed by thermocompression bonding. In addition, the central portion of the secondary battery is fixed by thermocompression bonding, so that the amount of bending is limited even when the outer edge portion of the secondary battery is bent.

Abstract translation: 在将具有比金属罐低的强度的膜用作二次电池的外部主体的情况下，设置在由外部主体包围的区域中的集电体，设置在外部主体的表面上的活性物质层 集电器等可能会在外部施加到二次电池上时损坏。 获得耐外力的二次电池。 在二次电池的中央部设置有开口，在开口部形成有端子。 通过热压接固定二次电池的外边缘。 此外，通过热压接固定二次电池的中心部分，使得即使当二次电池的外边缘部分弯曲时，弯曲量也受到限制。

公开(公告)号：US20150140397A1

公开(公告)日：2015-05-21

申请号：US14537018

申请日：2014-11-10

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota TAJIMA ,  Yuugo GOTO ,  Yumiko YONEDA (Former: SAITO) ,  Junya GOTO ,  Takuya MIWA

IPC: H01M2/02

CPC classification number: H01M2/0275 ,  B32B15/08 ,  B32B15/20 ,  B32B27/08 ,  B32B27/283 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  B32B2307/536 ,  B32B2307/714 ,  B32B2457/20 ,  H01M2/026 ,  H01M2/0262 ,  H01M2/0287 ,  H01M2220/20 ,  H01M2220/30

Abstract: A novel multilayer film, a multilayer film suitable for an exterior material for a secondary battery, or a multilayer film that can be favorably used for a secondary battery suitable for a portable information terminal is provided. At least a metal layer and a resin layer are stacked as the multilayer film. A resin that constitutes the resin layer preferably has a durometer hardness of A90 or less, preferably A60 or less. Further, it is preferable that the resin be a material that does not break even when it is stretched to 150% of its original length, more preferably to 200% of its original length, in one direction. The thickness of the resin layer is preferably greater than or equal to 100 μm and less than or equal to 5 mm, more preferably greater than or equal to 500 μm and less than or equal to 3 mm.

Abstract translation: 提供了一种新颖的多层膜，适用于二次电池的外部材料的多层膜或可以有利地用于适用于便携式信息终端的二次电池的多层膜。 层叠至少一层金属层和树脂层作为多层膜。 构成树脂层的树脂优选硬度为A90以下，优选为A60以下。 此外，优选的是，即使在一个方向上被拉伸至其原始长度的150％，更优选为其原始长度的200％，也不会破裂的材料。 树脂层的厚度优选大于或等于100μm且小于或等于5mm，更优选大于或等于500μm且小于或等于3mm。