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：US20130252088A1

公开(公告)日：2013-09-26

申请号：US13792612

申请日：2013-03-11

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazutaka KURIKI ,  Teppei OGuni

IPC: H01M4/64 ,  H01M4/04

CPC classification number: H01M4/70 ,  H01G11/66 ,  H01M4/04 ,  H01M4/134 ,  H01M4/64 ,  H01M4/661 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/0565 ,  H01M10/058 ,  H01M10/0585 ,  H01M10/0587 ,  H01M2220/30 ,  Y02E60/122 ,  Y02E60/13 ,  Y02P70/54 ,  Y10T29/49108

Abstract: A power storage device is reduced in weight. A metal sheet serving as a negative electrode current collector is separated and another negative electrode current collector is formed. For example, through the step of forming silicon serving as a negative electrode active material layer over a titanium sheet and then performing heating, the titanium sheet can be separated. Then, another negative electrode current collector with a thickness of more than or equal to 10 nm and less than or equal to 1 μm is formed. Thus, light weight of the power storage device can be achieved.

Abstract translation: 蓄电装置重量减轻。 分离用作负极集电体的金属片，形成另一负极集电体。 例如，通过在钛板上形成作为负极活性物质层的硅，然后进行加热的步骤，可以分离钛片。 然后，形成厚度大于等于10nm且小于等于1μm的另一负极集电体。 因此，可以实现蓄电装置的轻量化。

公开(公告)号：US20250046937A1

公开(公告)日：2025-02-06

申请号：US18713462

申请日：2022-11-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yasuhiro JINBO ,  Yosuke TSUKAMOTO ,  Kazutaka KURIKI ,  Tetsuji ISHITANI ,  Shuhei YOSHITOMI ,  Takeshi OSADA

IPC: H01M50/247 ,  H01M10/0525 ,  H01M10/42 ,  H01M10/48 ,  H01M50/238 ,  H01M50/284

Abstract: A safe charging environment with respect to a flexible battery capable of following the movement of a housing is provided. A flexible battery management system or an electronic device mounted with the flexible battery includes a sensor that senses a movement of the flexible battery and a charge control circuit having a function of starting charging or stopping charging of the flexible battery on the basis of a signal from the sensor; charging of the flexible battery is started using the charge control circuit when the sensor senses the flexible battery in a first mode where the flexible battery is opened and senses the flexible battery in a second mode where the flexible battery is curved.

公开(公告)号：US20240170667A1

公开(公告)日：2024-05-23

申请号：US18550769

申请日：2022-03-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Tetsuya KAKEHATA ,  Yohei MOMMA ,  Yumiko YONEDA ,  Kazutaka KURIKI ,  Tatsuyoshi TAKAHASHI ,  Kunihiro FUKUSHIMA

IPC: H01M4/525 ,  B60L50/64 ,  H01M4/02 ,  H01M4/131 ,  H01M50/109

CPC classification number: H01M4/525 ,  H01M4/131 ,  H01M50/109 ,  B60L50/64 ,  H01M2004/028 ,  H01M2220/20

Abstract: A battery in which a decrease in discharge capacity retention rate in charge and discharge cycle tests is inhibited is provided. The battery includes a positive electrode and a negative electrode. The positive electrode is used as a positive electrode of a test battery in which a negative electrode includes a lithium metal. When a test of 50 repetitions of a cycle of charge and discharge in which, after constant current charge is performed at a charge rate of 1 C (1 C=200 mA/g) until a voltage of 4.6 V is reached, constant voltage charge is performed at a voltage of 4.6 V until the charge rate reaches 0.1 C, and constant current discharge is then performed at a discharge rate of 1 C until a voltage of 2.5 V is reached is performed in a 25° C. environment or a 45° C. environment and discharge capacity is measured in each cycle, a discharge capacity value measured in a 50th cycle accounts for higher than or equal to 90% and lower than 100% of a maximum discharge capacity value in all 50 cycles.

公开(公告)号：US20230335733A1

公开(公告)日：2023-10-19

申请号：US18138790

申请日：2023-04-25

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Mayumi MIKAMI ,  Yohei MOMMA ,  Kazutaka KURIKI ,  Kazuhei NARITA

IPC: H01M4/58 ,  H01M10/0525 ,  H01M10/0562 ,  H01M50/446

CPC classification number: H01M4/582 ,  H01M10/0525 ,  H01M10/0562 ,  H01M50/446 ,  H01M2004/028

Abstract: A conduction path in an all-solid-state secondary battery is difficult to keep with a volume change in an active material due to charging and discharging in some cases. A positive electrode active material with a small volume change between the charged state and the discharged state is used for an all-solid-state secondary battery. For example, a positive electrode active material that has a layered rock-salt crystal structure in the discharged state and a crystal structure similar to the cadmium chloride type crystal structure in the charged state with a depth of charge of approximately 0.8 changes less in its volume and crystal structure between charging and discharging than known positive electrode active materials.

公开(公告)号：US20230141951A1

公开(公告)日：2023-05-11

申请号：US17905093

申请日：2021-03-01

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroshi KADOMA ,  Kazutaka KURIKI ,  Yumiko YONEDA ,  Kaori OGITA ,  Fumiko TANAKA ,  Yohei MOMMA ,  Shunpei YAMAZAKI

IPC: H01M10/0565 ,  H01M4/38 ,  H01M4/04

CPC classification number: H01M10/0565 ,  H01M4/386 ,  H01M4/0404 ,  H01M2004/027 ,  H01M2300/0082

Abstract: Interface contact between a polymer electrolyte and an active material layer is improved. A secondary battery with improved discharge capacity is provided. The secondary battery includes a positive electrode, a negative electrode, and an electrolyte layer between the positive electrode and the negative electrode. The positive electrode includes a positive electrode active material, a first lithium-ion conductive polymer, a first lithium salt, and a conductive material over a positive electrode current collector. The electrolyte layer includes a second lithium-ion conductive polymer and a second lithium salt. The conductive material is preferably graphene. The negative electrode preferably includes a negative electrode active material, a third lithium-ion conductive polymer, a third lithium salt, and a second conductive material over a negative electrode current collector.

公开(公告)号：US20230028284A1

公开(公告)日：2023-01-26

申请号：US17788369

申请日：2020-12-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Teruaki OCHIAI ,  Yumiko YONEDA ,  Kazuhei NARITA ,  Kazutaka KURIKI

IPC: H01M4/04 ,  H01M4/62

Abstract: A method for manufacturing a novel electrode is provided. The method includes the steps of applying, to a current collector, a mixture comprising an active material, a conductive additive comprising a graphene compound, a binder, and a dispersion medium; performing a drying treatment on the mixture; performing a heat treatment on the mixture at a temperature higher than a temperature of the drying treatment; reducing the graphene compound in the mixture by a chemical reaction using a reducing agent; and performing a thermal reduction treatment on the mixture at a temperature higher than the temperature of the heat treatment.

公开(公告)号：US20220149429A1

公开(公告)日：2022-05-12

申请号：US17438615

申请日：2020-03-12

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Kazutaka KURIKI ,  Ryota TAJIMA ,  Yumiko YONEDA

IPC: H01M10/0562 ,  H01M4/04 ,  H01M4/38 ,  H01M10/058

Abstract: An all-solid-state secondary battery having a higher level of safety than a conventional lithium-ion secondary battery using an electrolyte solution, specifically, a thin-film-type solid-state secondary battery, and a manufacturing method thereof are provided. As a solid electrolyte, a mixed material obtained by co-evaporation of SiO and an organic complex of lithium is used. That is, a solid electrolyte layer formed using a mixed material of an inorganic material and an organic material is used in a solid-state secondary battery. The ratio of oxygen to silicon in the solid electrolyte layer is higher than 1 and lower than 2.

公开(公告)号：US20190221896A1

公开(公告)日：2019-07-18

申请号：US16360065

申请日：2019-03-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Junpei MOMO ,  Kazutaka KURIKI ,  Hiromichi GODO ,  Shunpei YAMAZAKI

IPC: H01M10/46 ,  H02J50/20 ,  H01M10/0562 ,  H01L27/12 ,  H01M10/613 ,  H01M10/623 ,  A61N1/378 ,  G06F1/16 ,  H02J7/02 ,  H01L29/786 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/42 ,  H01M10/052 ,  H01L27/06 ,  H01L21/822

CPC classification number: H01M10/46 ,  A61N1/378 ,  G06F1/163 ,  H01L21/8221 ,  H01L27/0688 ,  H01L27/1218 ,  H01L27/1225 ,  H01L27/124 ,  H01L27/1251 ,  H01L29/78651 ,  H01L29/7869 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0585 ,  H01M10/425 ,  H01M10/613 ,  H01M10/623 ,  H01M2220/30 ,  H01M2300/0071 ,  H02J7/025 ,  H02J50/20

Abstract: A semiconductor device in which a circuit and a battery are efficiently stored is provided. In the semiconductor device, a first transistor, a second transistor, and a secondary battery are provided over one substrate. A channel region of the second transistor includes an oxide semiconductor. The secondary battery includes a solid electrolyte, and can be fabricated by a semiconductor manufacturing process. The substrate may be a semiconductor substrate or a flexible substrate. The secondary battery has a function of being wirelessly charged.

公开(公告)号：US20180005761A1

公开(公告)日：2018-01-04

申请号：US15685726

申请日：2017-08-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro INOUE ,  Ryota TAJIMA ,  Tamae MORIWAKA ,  Junpei MOMO ,  Teppei OGUNI ,  Kai KIMURA ,  Kazutaka KURIKI ,  Shunpei YAMAZAKI

IPC: H01G9/042 ,  H01G11/26 ,  H01G11/50 ,  H01G11/06 ,  H01M4/133 ,  H01M4/02 ,  H01M4/134 ,  H01M4/36 ,  H01M10/0525

CPC classification number: H01G9/042 ,  H01G11/06 ,  H01G11/26 ,  H01G11/50 ,  H01M4/02 ,  H01M4/133 ,  H01M4/134 ,  H01M4/366 ,  H01M10/0525 ,  Y02E60/122 ,  Y02E60/13

Abstract: To improve the reliability of a power storage device. A granular active material including carbon is used, and a net-like structure is formed on part of a surface of the granular active material. In the net-like structure, a carbon atom included in the granular active material is bonded to a silicon atom or a metal atom through an oxygen atom. Formation of the net-like structure suppresses reductive decomposition of an electrolyte solution, leading to a reduction in irreversible capacity. A power storage device using the above active material has high cycle performance and high reliability.