公开(公告)号：US10741828B2

公开(公告)日：2020-08-11

申请号：US15638449

申请日：2017-06-30

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 ,  H01M4/86 ,  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.

公开(公告)号：US10403879B2

公开(公告)日：2019-09-03

申请号：US14976504

申请日：2015-12-21

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Junpei Momo ,  Yohei Momma ,  Masaki Yamakaji ,  Teppei Oguni

IPC: H01M4/04 ,  H01M10/052 ,  H01M10/04 ,  H01M10/058 ,  C25D11/00 ,  C25D21/02 ,  C25D21/10

Abstract: To provide a method of manufacturing a lithium-ion secondary battery having stable charge characteristics and lifetime characteristics. A positive electrode is subjected to an electrochemical reaction in a large amount of electrolytic solution in advance before a secondary battery is completed. In this manner, the positive electrode can have stability. The use of the positive electrode enables manufacture of a highly reliable secondary battery. Similarly, a negative electrode is subjected to an electrochemical reaction in a large amount of electrolytic solution in advance. The use of the negative electrode enables manufacture of a highly reliable secondary battery.

公开(公告)号：US10084186B2

公开(公告)日：2018-09-25

申请号：US14920650

申请日：2015-10-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takahiro Kawakami ,  Teruaki Ochiai ,  Shuhei Yoshitomi ,  Takuya Hirohashi ,  Mako Motoyoshi ,  Yohei Momma ,  Junya Goto

IPC: H01M4/505 ,  H01M4/36 ,  H01M4/131 ,  H01M4/1391

CPC classification number: H01M4/505 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/366 ,  H01M2220/30

Abstract: To increase capacity per weight of a power storage device, a particle includes a first region, a second region in contact with at least part of a surface of the first region and located on the outside of the first region, and a third region in contact with at least part of a surface of the second region and located on the outside of the second region. The first and the second regions contain lithium and oxygen. At least one of the first region and the second region contains manganese. At least one of the first and the second regions contains an element M. The first region contains a first crystal having a layered rock-salt structure. The second region contains a second crystal having a layered rock-salt structure. An orientation of the first crystal is different from an orientation of the second crystal.

公开(公告)号：US20180076489A1

公开(公告)日：2018-03-15

申请号：US15698695

申请日：2017-09-08

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Mayumi Mikami ,  Yohei Momma ,  Minoru Takahashi ,  Hiroshi Kadoma ,  Teppei Oguni ,  Satoshi Seo

IPC: H01M10/42 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  H01G11/36 ,  H01G11/42 ,  H01G11/46 ,  H01G11/26 ,  C07F7/18

CPC classification number: H01M10/4235 ,  C07F7/12 ,  C07F7/1804 ,  H01G11/06 ,  H01G11/26 ,  H01G11/30 ,  H01G11/36 ,  H01G11/38 ,  H01G11/42 ,  H01G11/46 ,  H01G11/50 ,  H01G11/52 ,  H01G11/58 ,  H01M4/131 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M2220/20 ,  Y02E60/122

Abstract: A novel electrode, a novel power storage device, an electrode with less deterioration, an electrode with a high capacity, a long-life power storage device, a power storage device with less deterioration, a power storage device with high energy density, or a highly reliable power storage device is provided. The electrode includes a graphene compound including a graphene layer and a substituted or unsubstituted chain group, and an active material. The graphene layer is bonded to the chain group through a substituent containing silicon. The graphene compound includes a region in contact with the active material in particle form. The active material includes an element A, which is one or more elements selected from elements belonging to Group 1 and elements belonging to Group 2, and an element M, which is one or more elements selected from manganese and nickel. The chain group includes one or more groups selected from a carbonyl group, an ester group, a carboxyl group, an ether group, and an epoxy group.

公开(公告)号：US08859304B2

公开(公告)日：2014-10-14

申请号：US13716934

申请日：2012-12-17

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yohei Momma ,  Tomohiko Suganoya ,  Saki Obana

IPC: H01L21/00 ,  H01L21/30 ,  H01L21/46 ,  H01L51/00 ,  H01L33/52 ,  H01L51/56 ,  H01L27/32

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。