公开(公告)号：US20220020981A1

公开(公告)日：2022-01-20

申请号：US17292471

申请日：2019-11-07

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yohei MOMMA ,  Mayumi MIKAMI ,  Teruaki OCHIAI ,  Kazuhei NARITA ,  Jyo SAITO

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/58 ,  B60L58/12

Abstract: A positive electrode active material for a lithium ion secondary battery which has a large capacity and a good charge-and-discharge cycle performance is provided. The positive electrode active material includes lithium, cobalt, oxygen, and magnesium, and has a compound represented by a layered rock-salt crystal structure. A space group of the compound is represented by R-3m. The compound is a composite oxide in which magnesium is substituted for a lithium position and a cobalt position. The compound is a particle. The magnesium substituted for a lithium position and a cobalt position exists more in the region from the surface to 5 nm than in the region deeper than 10 nm from the surface. More magnesium is substituted for a lithium position than for a cobalt position.

公开(公告)号：US20210257669A1

公开(公告)日：2021-08-19

申请号：US17246793

申请日：2021-05-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kazuhei NARITA ,  Ryota TAJIMA

IPC: H01M10/0569 ,  H01G11/52 ,  H01G11/60 ,  H01G11/62 ,  H01G11/68 ,  H01G11/78 ,  H01M4/66 ,  H01M10/052 ,  H01M10/0568 ,  H01M50/44 ,  H01M50/116 ,  H01M50/209 ,  H01M50/431 ,  H01M50/543 ,  H01M50/557 ,  H01M50/429

Abstract: Provided is a power storage device whose charging and discharging characteristics are unlikely to be degraded by heat treatment or a power storage device that is highly safe against heat treatment. The power storage device includes a positive electrode, a negative electrode, a separator, an electrolyte, and an exterior body. The separator is positioned between the positive electrode and the negative electrode and includes polyphenylene sulfide or cellulosic fiber. The electrolyte includes propylene carbonate, ethylene carbonate, and vinylene carbonate, lithium hexafluorophosphate, and lithium bis(pentafluoroethanesulfonyl)amide. A concentration of lithium hexafluorophosphate with respect to the electrolyte is more than or equal to 0.01 wt % and less than or equal to 1.9 wt % in a weight ratio.

公开(公告)号：US20210020928A1

公开(公告)日：2021-01-21

申请号：US16982959

申请日：2019-03-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Mayumi MIKAMI ,  Jun ISHIKAWA ,  Miku FUJITA ,  Kazuhei NARITA

IPC: H01M4/38 ,  H01M4/133 ,  H01M4/131 ,  H01M4/134 ,  H01M10/0525

Abstract: A negative electrode active material with high capacity and excellent cycle performance and rate performance is provided. In addition, a secondary battery including the negative electrode active material, and an electronic device including the secondary battery are provided. Nanosilicon is mixed with a solid electrolyte containing lithium, titanium, phosphorus, and oxygen, and graphene oxide is further added thereto. Then, graphene oxide contained in the mixture is reduced with ethanol in which ascorbic acid and lithium hydroxide hydrate are dissolved, so that the negative electrode active material is manufactured.

公开(公告)号：US20170222265A1

公开(公告)日：2017-08-03

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 ,  H01M4/62 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/054

CPC classification number: H01M10/0568 ,  H01M4/364 ,  H01M4/366 ,  H01M4/38 ,  H01M4/386 ,  H01M4/587 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/054 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2010/4278 ,  H01M2220/30 ,  H01M2300/0025 ,  Y02E60/122 ,  Y02T10/7011

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：US20230207976A1

公开(公告)日：2023-06-29

申请号：US18116907

申请日：2023-03-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Ryota TAJIMA ,  Kazuhei NARITA ,  Kensuke YOSHIZUMI

IPC: H01M50/531 ,  H01M50/178 ,  H01M50/548 ,  H01M50/55 ,  H01M50/50 ,  H01M50/209 ,  H01M50/116 ,  H01M50/543

CPC classification number: H01M50/531 ,  H01M50/178 ,  H01M50/548 ,  H01M50/55 ,  H01M50/50 ,  H01M50/209 ,  H01M50/116 ,  H01M50/543 ,  Y02E60/10 ,  H01M2220/30

Abstract: A battery module with high impact resistance is provided. A battery module using an elastic body such as rubber for its exterior body covering a battery is provided. A bendable battery module is provided. As the exterior body covering a battery, an elastic body such as rubber is used, and the exterior body is molded in two steps. First, a first portion provided with a depression in which a battery is stored is molded using a first mold. Next, a battery is inserted into the first portion. Subsequently, second molding is performed using a second mold so as to fill an opening of the depression in the first portion, so that a second portion is formed. The second portion serves as a cover for closing the opening of the depression in the first portion.
The second portion is formed in contact with part of the electrodes in the battery and part of an end portion of the second exterior body in the battery.

公开(公告)号：US20220181697A1

公开(公告)日：2022-06-09

申请号：US17676875

申请日：2022-02-22

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazuhei NARITA ,  Ryota TAJIMA ,  Teppei OGUNI, I

IPC: H01M10/0569 ,  H01G11/28 ,  H01G11/32 ,  H01G11/52 ,  H01G11/60 ,  H01G11/62 ,  H01G11/84 ,  H01G11/86 ,  H01M4/36 ,  H01M4/525 ,  H01M4/587 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0568 ,  H01M50/411 ,  H01M50/429 ,  H01M50/44 ,  G04G19/00

Abstract: To provide a power storage device whose charge and discharge characteristics are unlikely to be degraded by heat treatment. To provide a power storage device that is highly safe against heat treatment. The power storage device includes a positive electrode, a negative electrode, a separator, an electrolytic solution, and an exterior body. The separator is located between the positive electrode and the negative electrode. The separator contains polyphenylene sulfide or solvent-spun regenerated cellulosic fiber. The electrolytic solution contains a solute and two or more kinds of solvents. The solute contains LiBETA. One of the solvents is propylene carbonate.

公开(公告)号：US20200280101A1

公开(公告)日：2020-09-03

申请号：US16875094

申请日：2020-05-15

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

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：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：US20170117589A1

公开(公告)日：2017-04-27

申请号：US15334571

申请日：2016-10-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota TAJIMA ,  Teppei OGUNI ,  Kazuhei NARITA ,  Junya GOTO ,  Ai NAKAGAWA ,  Minoru TAKAHASHI

IPC: H01M10/42 ,  H01M4/587 ,  H01M4/04 ,  H01M4/62 ,  H01M4/66 ,  G01R31/36 ,  H01M10/0569 ,  H01M2/16 ,  H01M10/0567 ,  H05K5/00 ,  G01R31/02 ,  H01M10/0525 ,  H01M4/525

CPC classification number: H01M10/4235 ,  G01R31/02 ,  G01R31/3832 ,  H01M2/1653 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/525 ,  H01M4/587 ,  H01M4/622 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2220/30 ,  H01M2300/0037 ,  H05K5/0017 ,  H05K5/0086 ,  Y02T10/7011

Abstract: To provide a power storage device whose charging and discharging characteristics are unlikely to be degraded by heat treatment. To provide a power storage device that is highly safe against heat treatment. The power storage device includes a positive electrode, a negative electrode, a separator, an electrolytic solution, and an exterior body. The separator is located between the positive electrode and the negative electrode. The separator contains polyphenylene sulfide. The electrolytic solution contains a solute and two or more kinds of solvents. The solute contains LiFSA at a concentration of higher than or equal to 0.1 wt % and lower than or equal to 50 wt % in the electrolytic solution. One of the solvents is propylene carbonate.

公开(公告)号：US20160268064A1

公开(公告)日：2016-09-15

申请号：US15056353

申请日：2016-02-29

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Jun ISHIKAWA ,  Kazuhei NARITA ,  Teppei OGUNI

IPC: H01G11/62 ,  H01G11/52 ,  H01M4/587 ,  H01M2/16 ,  H01M10/0568 ,  H01G11/10 ,  H01M10/0525

CPC classification number: H01G11/62 ,  H01G11/06 ,  H01G11/10 ,  H01G11/52 ,  H01G11/58 ,  H01G11/60 ,  H01M2/162 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0569 ,  H01M2300/0045 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

Abstract: To provide a power storage device exhibiting excellent charge and discharge characteristics at high temperature. To provide a power storage device exhibiting excellent charge and discharge characteristics at a wide range of temperature. Such a power storage device includes a positive electrode, a negative electrode, a separator, and an electrolytic solution. The separator is located between the positive electrode and the negative electrode and contains polyphenylene sulfide. The electrolytic solution contains an ionic liquid and an alkali metal salt.

Abstract translation: 提供在高温下表现出优异的充放电特性的蓄电装置。 提供在宽的温度范围内表现出优异的充放电特性的蓄电装置。 这种蓄电装置包括正极，负极，隔膜和电解液。 分离器位于正极和负极之间，并含有聚苯硫醚。 电解液含有离子液体和碱金属盐。