公开(公告)号：US20190245206A1

公开(公告)日：2019-08-08

申请号：US16388904

申请日：2019-04-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya MIWA ,  Kuniharu NOMOTO ,  Junpei MOMO

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

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

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：US20170256785A1

公开(公告)日：2017-09-07

申请号：US15446041

申请日：2017-03-01

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Teppei OGUNI ,  Takuya MIWA

IPC: H01M4/136 ,  H01M4/58 ,  H01M4/36 ,  H01M10/42 ,  H01M10/0525

CPC classification number: H01M4/136 ,  C01B25/45 ,  H01M4/366 ,  H01M4/5825 ,  H01M10/0525 ,  H01M10/425 ,  H01M2004/028 ,  H01M2010/4278 ,  H01M2220/20 ,  H01M2220/30 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A lithium-ion secondary battery including a lithium-containing complex phosphate as a positive electrode active material is provided. Furthermore, a positive electrode active material with high diffusion rate of lithium ions is provided to provide a lithium-ion secondary battery with high output. A positive electrode active material of a lithium-ion secondary battery includes a first plate-like component and a second plate-like component, a third prismatic component between the first component and the second component, and a space between the first component and the second component.

公开(公告)号：US20170133673A1

公开(公告)日：2017-05-11

申请号：US15409566

申请日：2017-01-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya MIWA ,  Nobuhiro INOUE ,  Kuniharu NOMOTO ,  Junpei MOMO

IPC: H01M4/36 ,  H01M4/62 ,  C01B25/30 ,  C30B29/14 ,  C30B7/10 ,  C01B25/45 ,  H01M4/485 ,  H01M10/0525

CPC classification number: H01M4/366 ,  C01B25/306 ,  C01B25/45 ,  C01B32/23 ,  C01P2006/40 ,  C30B7/10 ,  C30B29/14 ,  H01M4/04 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/1397 ,  H01M4/485 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525 ,  H01M2004/028 ,  Y02P70/54

Abstract: Occlusion and release of lithium ion are likely to one-dimensionally occur in the b-axis direction of a crystal in a lithium-containing composite oxide having an olivine structure. Thus, a positive electrode in which the b-axes of lithium-containing composite oxide single crystals are oriented vertically to a surface of a positive electrode current collector is provided. The lithium-containing composite oxide particles are mixed with graphene oxide and then pressure is applied thereto, whereby the rectangular parallelepiped or substantially rectangular parallelepiped particles are likely to slip. In addition, in the case where the rectangular parallelepiped or substantially rectangular parallelepiped particles whose length in the b-axis direction is shorter than those in the a-axis direction and the c-axis direction are used, when pressure is applied in one direction, the b-axes can be oriented in the one direction.

公开(公告)号：US20160047060A1

公开(公告)日：2016-02-18

申请号：US14923798

申请日：2015-10-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya MIWA ,  Nobuhiro INOUE ,  Kuniharu NOMOTO ,  Junpei MOMO

IPC: C30B29/14 ,  H01M4/1397 ,  H01M4/04

CPC classification number: H01M4/366 ,  C01B25/306 ,  C01B25/45 ,  C01B32/23 ,  C01P2006/40 ,  C30B7/10 ,  C30B29/14 ,  H01M4/04 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/1397 ,  H01M4/485 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525 ,  H01M2004/028 ,  Y02P70/54

Abstract: Occlusion and release of lithium ion are likely to one-dimensionally occur in the b-axis direction of a crystal in a lithium-containing composite oxide having an olivine structure. Thus, a positive electrode in which the b-axes of lithium-containing composite oxide single crystals are oriented vertically to a surface of a positive electrode current collector is provided. The lithium-containing composite oxide particles are mixed with graphene oxide and then pressure is applied thereto, whereby the rectangular parallelepiped or substantially rectangular parallelepiped particles are likely to slip. In addition, in the case where the rectangular parallelepiped or substantially rectangular parallelepiped particles whose length in the b-axis direction is shorter than those in the a-axis direction and the c-axis direction are used, when pressure is applied in one direction, the b-axes can be oriented in the one direction.

公开(公告)号：US20240421284A1

公开(公告)日：2024-12-19

申请号：US18819233

申请日：2024-08-29

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Teppei OGUNI ,  Takuya MIWA

IPC: H01M4/136 ,  C01B25/45 ,  H01M4/02 ,  H01M4/36 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/42

Abstract: A lithium-ion secondary battery including a lithium-containing complex phosphate as a positive electrode active material is provided. Furthermore, a positive electrode active material with high diffusion rate of lithium ions is provided to provide a lithium-ion secondary battery with high output. A positive electrode active material of a lithium-ion secondary battery includes a first plate-like component and a second plate-like component, a third prismatic component between the first component and the second component, and a space between the first component and the second component.

公开(公告)号：US20240186511A1

公开(公告)日：2024-06-06

申请号：US18442586

申请日：2024-02-15

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya MIWA ,  Yumiko YONEDA ,  Teppei OGUNI

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

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

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：US20230335707A1

公开(公告)日：2023-10-19

申请号：US18214109

申请日：2023-06-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Teppei OGUNI ,  Takuya MIWA

IPC: H01M4/136 ,  C01B25/45 ,  H01M4/36 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/42

CPC classification number: H01M4/136 ,  C01B25/45 ,  H01M4/366 ,  H01M4/5825 ,  H01M10/0525 ,  H01M10/425 ,  Y02E60/10 ,  Y02T10/70 ,  H01M2004/028

Abstract: A lithium-ion secondary battery including a lithium-containing complex phosphate as a positive electrode active material is provided. Furthermore, a positive electrode active material with high diffusion rate of lithium ions is provided to provide a lithium-ion secondary battery with high output. A positive electrode active material of a lithium-ion secondary battery includes a first plate-like component and a second plate-like component, a third prismatic component between the first component and the second component, and a space between the first component and the second component.

公开(公告)号：US20230253574A1

公开(公告)日：2023-08-10

申请号：US18135445

申请日：2023-04-17

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yumiko YONEDA ,  Takuya MIWA

IPC: H01M6/10 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/58 ,  H01M10/04

CPC classification number: H01M6/10 ,  H01M4/1397 ,  H01M4/364 ,  H01M4/5825 ,  H01M10/0431 ,  H01M10/052

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：US20220255084A1

公开(公告)日：2022-08-11

申请号：US17731538

申请日：2022-04-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Teruaki OCHIAI ,  Takahiro KAWAKAMI ,  Takuya MIWA

IPC: H01M4/66 ,  H01M4/131 ,  H01M4/587 ,  H01M4/36 ,  H01M4/62 ,  H01G11/50 ,  H01G11/36 ,  H01G11/86 ,  H01G11/38

Abstract: A novel electrode is provided. A novel power storage device is provided. A conductor having a sheet-like shape is provided. The conductor has a thickness of greater than or equal to 800 nm and less than or equal to 20 μm. The area of the conductor is greater than or equal to 25 mm2 and less than or equal to 10 m2. The conductor includes carbon and oxygen. The conductor includes carbon at a concentration of higher than 80 atomic % and oxygen at a concentration of higher than or equal to 2 atomic % and lower than or equal to 20 atomic %.

公开(公告)号：US20210273216A1

公开(公告)日：2021-09-02

申请号：US17316986

申请日：2021-05-11

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Teppei OGUNI ,  Takuya MIWA

IPC: H01M4/136 ,  C01B25/45 ,  H01M4/36 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/42

Abstract: A lithium-ion secondary battery including a lithium-containing complex phosphate as a positive electrode active material is provided. Furthermore, a positive electrode active material with high diffusion rate of lithium ions is provided to provide a lithium-ion secondary battery with high output. A positive electrode active material of a lithium-ion secondary battery includes a first plate-like component and a second plate-like component, a third prismatic component between the first component and the second component, and a space between the first component and the second component.