公开(公告)号：US09577290B2

公开(公告)日：2017-02-21

申请号：US13719562

申请日：2012-12-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kyosuke Ito ,  Toru Itakura ,  Nobuhiro Inoue ,  Jun Ishikawa ,  Junpei Momo

IPC: H01M10/0566 ,  H01M10/0569 ,  H01M10/052

CPC classification number: H01M10/0569 ,  H01M10/052 ,  H01M2300/0045 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A power storage device using an organic solvent as a nonaqueous solvent for a nonaqueous electrolyte, in which a CV charging period in CCCV charging can be prevented from being extended and which has high performance, can be provided. The power storage device includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The nonaqueous electrolyte includes an ionic liquid including an alicyclic quaternary ammonium cation having one or more substituents and a counter anion to the alicyclic quaternary ammonium cation, a cyclic ester, and an alkali metal salt. In particular, in the power storage device, the ionic liquid content is greater than or equal to 70 wt % and less than 100 wt % per unit weight of the ionic liquid and the cyclic ester in the nonaqueous electrolyte, or greater than or equal to 50 wt % and less than 80 wt % per unit weight of the nonaqueous electrolyte.

Abstract translation: 可以提供使用有机溶剂作为非水电解质的非水溶剂的蓄电装置，其中可以防止CCCV充电中的CV充电期延长并且具有高性能。 蓄电装置包括正极，负极和非水电解质。 非水电解质包括离子液体，其包含具有一个或多个取代基的脂环族季铵阳离子和与脂环族季铵阳离子的抗衡阴离子，环状酯和碱金属盐。 特别地，在蓄电装置中，离子液体含量大于或等于70重量％且小于100重量％，每单位重量的离子液体和非水电解质中的环状酯，或大于或等于 50重量％且小于80重量％的每单位重量的非水电解质。

公开(公告)号：US20140023920A1

公开(公告)日：2014-01-23

申请号：US13940287

申请日：2013-07-12

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Teppei Oguni ,  Tamae Moriwaka ,  Junpei Momo ,  Ryota Tajima ,  Nobuhiro Inoue

IPC: H01M4/133

CPC classification number: H01M4/133 ,  H01M4/587

Abstract: A secondary battery in which graphite that is an active material can occlude and release lithium efficiently is provided. Further, a highly reliable secondary battery in which the amount of lithium inserted and extracted into/from graphite that is an active material is prevented from varying is provided. The secondary battery includes a negative electrode including a current collector and graphite provided over the current collector, and a positive electrode. The graphite includes a plurality of graphene layers. Surfaces of the plurality of graphene layers are provided substantially along the direction of an electric field generated between the positive electrode and the negative electrode.

Abstract translation: 提供了作为活性物质的石墨能够有效地吸留和释放锂的二次电池。 此外，提供了一种高可靠性的二次电池，其中防止插入和从石墨中提取的作为活性材料的锂的量变化。 二次电池包括设置在集电体上方的集电体和石墨的负极和正极。 石墨包括多个石墨烯层。 基本上沿着在正极和负极之间产生的电场的方向设置多个石墨烯层的表面。

公开(公告)号：US20130164609A1

公开(公告)日：2013-06-27

申请号：US13719562

申请日：2012-12-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyosuke ITO ,  Toru Itakura ,  Nobuhiro Inoue ,  Jun Ishikawa ,  Junpei Momo

IPC: H01M10/0569 ,  H01M10/052

CPC classification number: H01M10/0569 ,  H01M10/052 ,  H01M2300/0045 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A power storage device using an organic solvent as a nonaqueous solvent for a nonaqueous electrolyte, in which a CV charging period in CCCV charging can be prevented from being extended and which has high performance, can be provided. The power storage device includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The nonaqueous electrolyte includes an ionic liquid including an alicyclic quaternary ammonium cation having one or more substituents and a counter anion to the alicyclic quaternary ammonium cation, a cyclic ester, and an alkali metal salt. In particular, in the power storage device, the ionic liquid content is greater than or equal to 70 wt % and less than 100 wt % per unit weight of the ionic liquid and the cyclic ester in the nonaqueous electrolyte, or greater than or equal to 50 wt % and less than 80 wt % per unit weight of the nonaqueous electrolyte.

Abstract translation: 可以提供使用有机溶剂作为非水电解质的非水溶剂的蓄电装置，其中可以防止CCCV充电中的CV充电期延长并且具有高性能。 蓄电装置包括正极，负极和非水电解质。 非水电解质包括离子液体，其包含具有一个或多个取代基的脂环族季铵阳离子和与脂环族季铵阳离子的抗衡阴离子，环状酯和碱金属盐。 特别地，在蓄电装置中，离子液体含量大于或等于70重量％且小于100重量％，每单位重量的离子液体和非水电解质中的环状酯，或大于或等于 50重量％且小于80重量％的每单位重量的非水电解质。

公开(公告)号：US11699782B2

公开(公告)日：2023-07-11

申请号：US16904618

申请日：2020-06-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei Yamazaki ,  Teppei Oguni ,  Tamae Moriwaka ,  Junpei Momo ,  Ryota Tajima ,  Nobuhiro Inoue

IPC: H01M4/133 ,  H01M4/587 ,  H01M4/36

CPC classification number: H01M4/133 ,  H01M4/366 ,  H01M4/587

Abstract: A secondary battery in which graphite that is an active material can occlude and release lithium efficiently is provided. Further, a highly reliable secondary battery in which the amount of lithium inserted and extracted into/from graphite that is an active material is prevented from varying is provided. The secondary battery includes a negative electrode including a current collector and graphite provided over the current collector, and a positive electrode. The graphite includes a plurality of graphene layers. Surfaces of the plurality of graphene layers are provided substantially along the direction of an electric field generated between the positive electrode and the negative electrode.

公开(公告)号：US11605804B2

公开(公告)日：2023-03-14

申请号：US17365196

申请日：2021-07-01

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro Inoue ,  Sachiko Kataniwa ,  Kazutaka Kuriki ,  Junpei Momo

IPC: H01M4/02 ,  H01M4/04 ,  H01G11/28 ,  H01M4/62 ,  H01G11/50 ,  H01G11/84 ,  H01M4/133 ,  H01M4/583 ,  H01M10/0525

Abstract: An object is to suppress electrochemical decomposition of an electrolyte solution and the like at a negative electrode in a lithium ion battery or a lithium ion capacitor; thus, irreversible capacity is reduced, cycle performance is improved, or operating temperature range is extended. A negative electrode for a power storage device including a negative electrode current collector, a negative electrode active material layer which is over the negative electrode current collector and includes a plurality of particles of a negative electrode active material, and a film covering pan of the negative electrode active material. The film has an insulating property and lithium ion conductivity.

公开(公告)号：US11489148B2

公开(公告)日：2022-11-01

申请号：US16774296

申请日：2020-01-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro Inoue ,  Ryota Tajima ,  Naoki Kurihara ,  Junpei Momo

IPC: H01M4/134 ,  H01M4/62 ,  H01M4/66 ,  H01M10/052 ,  H01M4/38 ,  H01M4/36 ,  H01M10/48 ,  H01M10/42 ,  H01M50/24

Abstract: An object of one embodiment of the present invention is to provide a secondary battery in which deterioration of charge-discharge cycle characteristics is suppressed, to suppress generation of defects caused by expansion and contraction of an active material in a negative electrode, or to prevent deterioration caused by deformation of a secondary battery. To prevent deterioration, a material that can be alloyed with lithium and fluidified easily is used for a negative electrode. To hold a negative electrode active material over a surface of a current collector, a covering layer that covers the negative electrode active material is provided. Furthermore, a portion where the current collector and the negative electrode active material are in contact with each other is alloyed. In other words, an alloy that is in contact with both the current collector and the negative electrode active material is provided in the negative electrode.

公开(公告)号：US10658701B2

公开(公告)日：2020-05-19

申请号：US15407283

申请日：2017-01-17

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro Inoue ,  Masaki Yamakaji ,  Jun Ishikawa ,  Kazuhei Narita

IPC: H01M10/0568 ,  H01M4/36 ,  H01M4/587 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/054 ,  H01M4/02 ,  H01M10/42

Abstract: A storage battery includes positive and negative electrodes and an electrolytic solution. The negative electrode includes a first element and carbon. The first element is any of silicon, tin, gallium, aluminum, germanium, lead, antimony, bismuth, silver, zinc, cadmium, and indium. The negative electrode includes an active material and a first layer in contact with a surface of the active material. The first layer has a thickness of 10 nm to 1000 nm inclusive. The electrolytic solution contains first and second cations. The first cation is one or more of a lithium ion, a sodium ion, a calcium ion, and a magnesium ion. The second cation is an imidazolium cation or a tertiary sulfonium cation.

公开(公告)号：US10128498B2

公开(公告)日：2018-11-13

申请号：US15165147

申请日：2016-05-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazutaka Kuriki ,  Nobuhiro Inoue ,  Kiyofumi Ogino

IPC: H01M4/36 ,  H01G11/06 ,  H01G11/50 ,  H01M4/38 ,  H01M4/66 ,  H01M10/0562 ,  H01G11/68 ,  H01G11/72 ,  H01M10/0525 ,  H01M4/02

Abstract: A power storage device which has improved performance such as higher discharge capacity and in which deterioration due to peeling or the like of an active material layer is less likely to be caused is provided. In an electrode for the power storage device, phosphorus-doped amorphous silicon is used for the active material layer over a current collector as a material that can be alloyed with lithium, and niobium oxide is deposited over the active material layer as a layer containing niobium. Accordingly, the capacity of the power storage device can be increased and the cycle characteristics and the charge-discharge efficiency can be improved.

公开(公告)号：US09899660B2

公开(公告)日：2018-02-20

申请号：US15621520

申请日：2017-06-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Nobuhiro Inoue ,  Sachiko Kataniwa ,  Kazutaka Kuriki ,  Junpei Momo

IPC: H01M10/04 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/133 ,  H01G11/84 ,  H01G11/50 ,  H01G11/28 ,  H01M4/583 ,  H01M4/02

CPC classification number: H01M4/0404 ,  H01G11/28 ,  H01G11/50 ,  H01G11/84 ,  H01M4/0471 ,  H01M4/133 ,  H01M4/583 ,  H01M4/623 ,  H01M4/628 ,  H01M10/0525 ,  H01M2004/027 ,  Y02E60/13 ,  Y02T10/7022

Abstract: An object is to suppress electrochemical decomposition of an electrolyte solution and the like at a negative electrode in a lithium ion battery or a lithium ion capacitor; thus, irreversible capacity is reduced, cycle performance is improved, or operating temperature range is extended. A negative electrode for a power storage device including a negative electrode current collector, a negative electrode active material layer which is over the negative electrode current collector and includes a plurality of particles of a negative electrode active material, and a film covering part of the negative electrode active material. The film has an insulating property and lithium ion conductivity.

公开(公告)号：US09865871B2

公开(公告)日：2018-01-09

申请号：US14972796

申请日：2015-12-17

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroyuki Miyake ,  Nobuhiro Inoue ,  Takuya Hirohashi ,  Yuika Sato

IPC: H01M4/48 ,  C01B33/113 ,  H01M10/0525 ,  H01M4/131

CPC classification number: H01M4/483 ,  C01B33/113 ,  H01M4/131 ,  H01M10/0525 ,  Y02E60/122

Abstract: Silicon oxide which is an oxide containing at least silicon, in which part of silicon is replaced by boron, aluminum, or gallium, is provided.