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公开(公告)号：US10230093B2
公开(公告)日：2019-03-12
申请号：US15273131
申请日：2016-09-22
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Yohei Momma , Takahiro Kawakami , Teruaki Ochiai
IPC: H01M4/04 , H01M4/62 , H01M4/505 , H01M10/052
Abstract: A storage battery electrode with high capacity is stably manufactured with the use of a strongly basic active material. The basicity of a mixture of a strongly basic active material and graphene oxide, the mixture subjected to heat treatment, or the mixture subjected to reduction by addition of a reducing agent is measured. Only in the case where the measured basicity falls within a predetermined range, a binder such as polyvinylidene fluoride (PVdF) is mixed to form a slurry. Thus, gelation of the binder can be prevented.
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公开(公告)号：US10153479B2
公开(公告)日：2018-12-11
申请号：US14886298
申请日：2015-10-19
Applicant: Semiconductor Energy Laboratory Co., LTD.
Inventor： Junpei Momo , Yohei Momma
Abstract: A fabricating method and a fabricating apparatus for a lithium-ion secondary battery having stable charge characteristics and lifetime characteristics are provided. A positive electrode is subjected to an electrochemical reaction in a large amount of electrolyte solution in advance before a secondary battery is completed. In this manner, the positive electrode can have stability. In a manner similar to that of the positive electrode, a negative electrode is also subjected to the electrochemical reaction in a large amount of the electrolyte solution in advance, whereby a high reliable secondary battery can be manufactured.
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公开(公告)号：US09774034B2
公开(公告)日：2017-09-26
申请号：US14553674
申请日：2014-11-25
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Takahiro Kawakami , Mayumi Mikami , Shunsuke Adachi , Shuhei Yoshitomi , Teruaki Ochiai , Yumiko Yoneda , Yohei Momma , Satoshi Seo
CPC classification number: H01M4/505 , C01G45/1228 , C01G53/50 , C01P2002/80 , C01P2002/85 , C01P2002/89 , C01P2004/04 , H01M4/366 , H01M4/525 , H01M4/5825
Abstract: To increase the amount of lithium ions that can be received in and released from a positive electrode active material to achieve high capacity and high energy density of a secondary battery. A lithium manganese oxide particle includes a first region and a second region. The valence number of manganese in the first region is lower than the valence number of manganese in the second region. The lithium manganese oxide has high structural stability and high capacity characteristics.
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公开(公告)号：US09680115B2
公开(公告)日：2017-06-13
申请号：US15236710
申请日：2016-08-15
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Yohei Momma , Tomohiko Suganoya , Saki Obana
CPC classification number: H01L51/0097 , H01L27/1225 , H01L27/32 , H01L27/3244 , H01L27/3258 , H01L33/52 , H01L51/5203 , H01L51/5237 , H01L51/524 , H01L51/5246 , H01L51/5253 , H01L51/56 , H01L2251/301 , H01L2251/5338 , H01L2924/0002 , Y02E10/549 , Y02P70/521 , H01L2924/00
Abstract: A light-emitting device having a curved light-emitting surface is provided. Further, a highly-reliable light-emitting device is provided. A substrate with plasticity is used. A light-emitting element is formed over the substrate in a flat state. The substrate provided with the light-emitting element is curved and put on a surface of a support having a curved surface. Then, a protective layer for protecting the light-emitting element is formed in the same state. Thus, a light-emitting device having a curved light-emitting surface, such as a lighting device or a display device can be manufactured.
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公开(公告)号：US09443918B2
公开(公告)日：2016-09-13
申请号：US14492607
申请日：2014-09-22
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Yohei Momma , Tomohiko Suganoya , Saki Obana
CPC classification number: H01L51/0097 , H01L27/1225 , H01L27/32 , H01L27/3244 , H01L27/3258 , H01L33/52 , H01L51/5203 , H01L51/5237 , H01L51/524 , H01L51/5246 , H01L51/5253 , H01L51/56 , H01L2251/301 , H01L2251/5338 , H01L2924/0002 , Y02E10/549 , Y02P70/521 , H01L2924/00
Abstract: A light-emitting device having a curved light-emitting surface is provided. Further, a highly-reliable light-emitting device is provided. A substrate with plasticity is used. A light-emitting element is formed over the substrate in a flat state. The substrate provided with the light-emitting element is curved and put on a surface of a support having a curved surface. Then, a protective layer for protecting the light-emitting element is formed in the same state. Thus, a light-emitting device having a curved light-emitting surface, such as a lighting device or a display device can be manufactured.
Abstract translation: 提供具有弯曲发光面的发光装置。 此外，提供了高度可靠的发光装置。 使用具有可塑性的基材。 在平坦状态下在基板上形成发光元件。 设置有发光元件的基板弯曲并放置在具有曲面的支撑体的表面上。 然后，在相同的状态下形成用于保护发光元件的保护层。 因此，可以制造具有弯曲发光面的发光装置，例如照明装置或显示装置。
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Patent Agency Ranking
26.发明申请LITHIUM MANGANESE OXIDE COMPOSITE, SECONDARY BATTERY, AND MANUFACTURING METHOD THEREOF 有权锂锰氧化物复合材料，二次电池及其制造方法公开(公告)号：US20140332715A1
公开(公告)日：2014-11-13
申请号：US14272718
申请日：2014-05-08
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Takahiro KAWAKAMI , Shuhei Yoshitomi , Teruaki Ochiai , Satoshi Seo , Yohei Momma , Yumiko Saito
CPC classification number: H01B1/08 , C01G45/1242 , C01G45/1257 , C01P2002/72 , C01P2002/76 , C01P2004/80 , C01P2006/40 , H01M4/131 , H01M4/364 , H01M4/366 , H01M4/505 , Y02P70/54
Abstract: To increase the amount of lithium ions that can be received and released in and from a positive electrode active material to achieve high capacity and high energy density of a secondary battery. A composite material of crystallites of LiMn2O4 (crystallites with a spinel crystal structure) and crystallites of Li2MnO3 (crystallites with a layered rock-salt crystal structure) is used as a positive electrode active material. The lithium manganese oxide composite has high structural stability and high capacity.
Abstract translation: 为了增加可以从正极活性物质中吸收和释放的锂离子的量，以实现二次电池的高容量和高能量密度。 使用LiMn2O4（具有尖晶石晶体结构的微晶）和Li2MnO3微晶（具有层状岩盐晶体结构的微晶）的微晶复合材料作为正极活性物质。 该锰酸锂复合材料具有结构稳定性高，容量大的特点。
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27.发明授权公开(公告)号：US11728478B2
公开(公告)日：2023-08-15
申请号：US16917190
申请日：2020-06-30
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Yohei Momma , Takahiro Kawakami , Teruaki Ochiai , Masahiro Takahashi
IPC: H01M4/52 , H01M4/46 , H01M4/1391 , H01M4/62 , H01M4/36 , C01G51/00 , H01M4/525 , H01M4/131 , H01M10/0525 , G01N23/2273 , H01M4/02
CPC classification number: H01M4/466 , C01G51/42 , H01M4/131 , H01M4/1391 , H01M4/366 , H01M4/525 , H01M4/62 , H01M4/625 , H01M10/0525 , C01P2002/00 , C01P2002/85 , C01P2004/04 , C01P2006/40 , G01N23/2273 , H01M2004/028
Abstract: Provided is a positive electrode active material for a lithium ion secondary battery having favorable cycle characteristics and high capacity. A covering layer containing aluminum and a covering layer containing magnesium are provided on a superficial portion of the positive electrode active material. The covering layer containing magnesium exists in a region closer to a particle surface than the covering layer containing aluminum is. The covering layer containing aluminum can be formed by a sol-gel method using an aluminum alkoxide. The covering layer containing magnesium can be formed as follows: magnesium and fluorine are mixed as a starting material and then subjected to heating after the sol-gel step, so that magnesium is segregated.
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公开(公告)号：US11616231B2
公开(公告)日：2023-03-28
申请号：US17750436
申请日：2022-05-23
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Mayumi Mikami , Aya Uchida , Yumiko Yoneda , Yohei Momma , Masahiro Takahashi , Teruaki Ochiai
IPC: H01B1/08 , H01M4/525 , H01M4/131 , C01G53/00 , H01M4/133 , H01M4/134 , H01M4/139 , H01M4/36 , H01M4/505 , H01M10/0525 , H01M6/16 , H01M4/02
Abstract: A positive electrode active material having high capacity and excellent cycle performance is provided. The positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charge and discharge as compared with those of a known positive electrode active material.
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公开(公告)号：US11489151B2
公开(公告)日：2022-11-01
申请号：US16607381
申请日：2018-05-01
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Masahiro Takahashi , Teruaki Ochiai , Yohei Momma , Ayae Tsuruta
Abstract: A positive electrode active material particle with little deterioration is provided. A power storage device with little deterioration is provided. A highly safe power storage device is provided. The positive electrode active material particle includes a first crystal grain, a second crystal grain, and a crystal grain boundary positioned between the crystal grain and the second crystal grain; the first crystal grain and the second crystal grain include lithium, a transition metal, and oxygen; the crystal grain boundary includes magnesium and oxygen; and the positive electrode active material particle includes a region where the ratio of the atomic concentration of magnesium in the crystal grain boundary to the atomic concentration of the transition metal in first crystal grain and the second crystal grain is greater than or equal to 0.010 and less than or equal to 0.50.
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公开(公告)号：US11043660B2
公开(公告)日：2021-06-22
申请号：US16923494
申请日：2020-07-08
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Teruaki Ochiai , Takahiro Kawakami , Mayumi Mikami , Yohei Momma , Masahiro Takahashi , Ayae Tsuruta
IPC: H01M4/131 , H01M4/1315 , H01M4/1391 , H01M4/62 , H01M4/13915 , H01M4/134 , H01M4/36 , H01M4/525 , H01M4/86 , H01M4/02 , H01M10/0525
Abstract: A positive electrode active material which can improve cycle characteristics of a secondary battery is provided. Two kinds of regions are provided in a superficial portion of a positive electrode active material such as lithium cobaltate which has a layered rock-salt crystal structure. The inner region is a non-stoichiometric compound containing a transition metal such as titanium, and the outer region is a compound of representative elements such as magnesium oxide. The two kinds of regions each have a rock-salt crystal structure. The inner layered rock-salt crystal structure and the two kinds of regions in the superficial portion are topotaxy; thus, a change of the crystal structure of the positive electrode active material generated by charging and discharging can be effectively suppressed. In addition, since the outer coating layer in contact with an electrolyte solution is the compound of representative elements which is chemically stable, the secondary battery having excellent cycle characteristics can be obtained.
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