公开(公告)号：US20210083281A1

公开(公告)日：2021-03-18

申请号：US16611791

申请日：2018-05-11

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Mayumi MIKAMI ,  Aya UCHIDA ,  Yumiko YONEDA ,  Yohei MOMMA ,  Masahiro TAKAHASHI ,  Teruaki OCHIAI

IPC: H01M4/525 ,  H01M4/131 ,  H01M4/134 ,  H01M4/133 ,  H01M4/505 ,  H01M4/36 ,  H01M4/139 ,  H01M10/0525 ,  C01G53/00

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.

公开(公告)号：US20170237127A1

公开(公告)日：2017-08-17

申请号：US15519692

申请日：2015-10-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Jun ISHIKAWA ,  Kazuhei NARITA ,  Teppei OGUNI ,  Aya UCHIDA

IPC: H01M10/42 ,  H01G11/70 ,  H01G11/86 ,  H01G11/52 ,  H01M4/58 ,  H01G11/08 ,  H01M10/0525 ,  H01M4/66 ,  H01M4/04 ,  H01M4/587 ,  H01G11/28 ,  H01G11/68

CPC classification number: H01M10/4235 ,  H01G11/06 ,  H01G11/08 ,  H01G11/26 ,  H01G11/28 ,  H01G11/52 ,  H01G11/68 ,  H01G11/70 ,  H01G11/86 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/13 ,  H01M4/139 ,  H01M4/5825 ,  H01M4/587 ,  H01M4/66 ,  H01M4/661 ,  H01M4/667 ,  H01M10/0525 ,  H01M2004/021 ,  Y02T10/7011

Abstract: A power storage device with a high capacity is provided. A power storage device with a high energy density is provided. A highly reliable power storage device is provided. A power storage device with a long lifetime is provided.A method for manufacturing an electrode is characterized by including the steps of: mixing an active material, a binder, and a conductive additive to form a slurry; applying the slurry onto a current collector; drying the applied slurry to form an active material layer; and performing heat treatment in an atmosphere containing oxygen to form a film in contact with the current collector. The film is formed on a surface of the current collector where the active material layer is not provided and includes at least one component of the current collector and oxygen.

公开(公告)号：US20210104744A1

公开(公告)日：2021-04-08

申请号：US16464566

申请日：2017-12-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Teppei OGUNI ,  Aya UCHIDA ,  Hiroshi KADOMA

IPC: H01M4/583 ,  H01M10/0562 ,  H01M4/133

Abstract: Provided is a layer for preventing a short circuit between a positive electrode and a negative electrode in a solid battery using a layer containing a solid electrolyte. As the solid electrolyte between the positive electrode and the negative electrode, a layer containing a graphene compound is used. Lithium ions can pass through the layer containing the graphene compound. Lithium ions are added in advance in the layer containing the graphene compound. Specifically, a modifier is used, and a graphene compound chemically modified with a functional group such as ether and ester with an increased interlayer distance is used.

公开(公告)号：US20180233780A1

公开(公告)日：2018-08-16

申请号：US15513499

申请日：2015-09-30

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Jun ISHIKAWA ,  Kazuhei NARITA ,  Teppei OGUNI ,  Aya UCHIDA

IPC: H01M10/0569 ,  H01M10/0567 ,  H01M10/0525 ,  H01M4/66 ,  H01M4/133 ,  H01M4/134 ,  H01M2/14 ,  H01G11/60 ,  H01G11/64 ,  H01G11/26 ,  H01G11/06

CPC classification number: H01M10/0569 ,  H01G11/06 ,  H01G11/26 ,  H01G11/60 ,  H01G11/62 ,  H01G11/64 ,  H01M2/14 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/366 ,  H01M4/5825 ,  H01M4/662 ,  H01M4/663 ,  H01M6/16 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/058 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/0045 ,  Y02E60/13 ,  Y02T10/7011

Abstract: A power storage device with high capacity is provided. Alternatively, a power storage device with high energy density is provided. Alternatively, a highly reliable power storage device is provided. Alternatively, a long-life power storage device is provided.A power storage device is characterized by comprising a separator, a first electrode, a second electrode, an electrolytic solution, in which the separator is provided between the first electrode and the second electrode, the first electrode includes an active material layer and a current collector, the first electrode includes a pair of coating films between which the current collector is sandwiched, the active material layer includes a region in contact with the current collector, the active material layer includes a region in contact with at least one of the pair of coating films, and the electrolytic solution includes an alkali metal salt and an ionic liquid.

公开(公告)号：US20150279577A1

公开(公告)日：2015-10-01

申请号：US14659651

申请日：2015-03-17

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Aya UCHIDA ,  Teppei OGUNI ,  Rie YOKOI ,  Jun ISHIKAWA

IPC: H01G11/24 ,  H01M12/08 ,  H01G11/28 ,  H01G11/52 ,  H01G11/62 ,  H01M10/0569 ,  H01M10/0525

CPC classification number: H01G11/62 ,  H01G11/06 ,  H01G11/28 ,  H01G11/52 ,  H01G11/60 ,  H01M10/052 ,  H01M10/0569 ,  H01M2300/0045 ,  Y02E60/13

Abstract: A power storage device with high capacity, a power storage device with high energy density, a highly reliable power storage device, and a long-life power storage device are provided. The power storage device includes a positive electrode, a separator, a negative electrode, and an electrolytic solution. The electrolytic solution contains an alkali metal salt and an ionic liquid. The separator is located between the positive electrode and the negative electrode. At least part of the positive electrode overlaps with the negative electrode. At least part of an end portion of the negative electrode is located inside a region between end portions of the positive electrode.

Abstract translation: 提供具有高容量的蓄电装置，具有高能量密度的蓄电装置，高可靠性蓄电装置以及长寿命蓄电装置。 蓄电装置包括正极，隔板，负极和电解液。 电解液含有碱金属盐和离子液体。 隔板位于正极和负极之间。 正极的至少一部分与负极重叠。 负极的端部的至少一部分位于正极的端部之间的区域的内侧。

公开(公告)号：US20240222629A1

公开(公告)日：2024-07-04

申请号：US18604655

申请日：2024-03-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Teppei OGUNI ,  Aya UCHIDA ,  Hiroshi KADOMA

IPC: H01M4/583 ,  H01M4/133 ,  H01M10/0562 ,  H01M4/02 ,  H01M50/431

CPC classification number: H01M4/583 ,  H01M4/133 ,  H01M10/0562 ,  H01M2004/027 ,  H01M2004/028 ,  H01M50/431

Abstract: Provided is a layer for preventing a short circuit between a positive electrode and a negative electrode in a solid battery using a layer containing a solid electrolyte. As the solid electrolyte between the positive electrode and the negative electrode, a layer containing a graphene compound is used. Lithium ions can pass through the layer containing the graphene compound. Lithium ions are added in advance in the layer containing the graphene compound. Specifically, a modifier is used, and a graphene compound chemically modified with a functional group such as ether and ester with an increased interlayer distance is used.

公开(公告)号：US20220255076A1

公开(公告)日：2022-08-11

申请号：US17729170

申请日：2022-04-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Mayumi MIKAMI ,  Aya UCHIDA ,  Yumiko YONEDA ,  Yohei MOMMA ,  Masahiro TAKAHASHI ,  Teruaki OCHIAI

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/139 ,  H01M4/36 ,  H01M4/505 ,  H01M10/0525 ,  H01M6/16

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.

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：US20230361267A1

公开(公告)日：2023-11-09

申请号：US18221776

申请日：2023-07-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yohei Momma ,  Mayumi MIKAMI ,  Aya UCHIDA ,  Kazuhito MACHIKAWA

IPC: H01M4/04 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0525

CPC classification number: H01M4/0471 ,  H01M4/0419 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5835 ,  H01M10/0525 ,  H01M2004/027

Abstract: To provide a positive electrode active material with which the cycle performance of a secondary battery can be improved and a manufacturing method thereof. When a secondary battery is fabricated using, for a positive electrode, a positive electrode active material obtained by depositing a solid electrolyte on a lithium compound with the use of a graphene compound by spray-drying treatment and volatilizing carbon from the graphene compound by heat treatment, the decomposition of an electrolyte solution in contact with the positive electrode active material can be inhibited, contributing to improvement in the cycle performance of the secondary battery.

公开(公告)号：US20220285681A1

公开(公告)日：2022-09-08

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: H01M4/525 ,  C01G53/00 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/139 ,  H01M4/36 ,  H01M4/505 ,  H01M10/0525 ,  H01M6/16

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.