公开(公告)号：US09754728B2

公开(公告)日：2017-09-05

申请号：US14032214

申请日：2013-09-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro Inoue ,  Ryota Tajima ,  Tamae Moriwaka ,  Junpei Momo ,  Teppei Oguni ,  Kai Kimura ,  Kazutaka Kuriki ,  Shunpei Yamazaki

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

公开(公告)号：US09735430B2

公开(公告)日：2017-08-15

申请号：US14598344

申请日：2015-01-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kai Kimura ,  Kazutaka Kuriki ,  Teppei Oguni ,  Aya Uchida

IPC: H01M4/13 ,  H01M4/62 ,  H01G11/28 ,  H01G11/24 ,  H01G11/26 ,  H01G11/38 ,  H01M4/133 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/44 ,  H01M4/02 ,  H01M10/42

CPC classification number: H01M4/622 ,  H01G11/24 ,  H01G11/26 ,  H01G11/28 ,  H01G11/38 ,  H01M4/13 ,  H01M4/133 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/446 ,  H01M2004/021 ,  H01M2010/4292 ,  H01M2220/20 ,  H01M2220/30 ,  Y02E60/122 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

Abstract: A power storage device with high capacity or high energy density is provided. A highly reliable power storage device is provided. A long-life power storage device is provided. An electrode includes an active material, a first binder, and a second binder. The specific surface area of the active material is S [m2/g]. The weight of the active material, the weight of the first binder, and the weight of the second binder are a, b, and c, respectively. The solution of {(b+c)/(a+b+c)}×100÷S is 0.3 or more. The electrode includes a first film in contact with the active material. The first film preferably includes a region in contact with the active material. The first film preferably includes a region with a thickness of 2 nm or more and 20 nm or less. The first film contains a water-soluble polymer.

公开(公告)号：US11735736B2

公开(公告)日：2023-08-22

申请号：US17501462

申请日：2021-10-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kai Kimura ,  Kazutaka Kuriki ,  Teppei Oguni ,  Aya Uchida

IPC: H01M4/62 ,  H01G11/28 ,  H01G11/24 ,  H01G11/26 ,  H01G11/38 ,  H01M4/13 ,  H01M4/133 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/44 ,  H01M4/02 ,  H01M10/42

CPC classification number: H01M4/622 ,  H01G11/24 ,  H01G11/26 ,  H01G11/28 ,  H01G11/38 ,  H01M4/13 ,  H01M4/133 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/446 ,  H01M2004/021 ,  H01M2010/4292 ,  H01M2220/20 ,  H01M2220/30 ,  Y02E60/10 ,  Y02E60/13 ,  Y02T10/70

Abstract: A power storage device with high capacity or high energy density is provided. A highly reliable power storage device is provided. A long-life power storage device is provided. An electrode includes an active material, a first binder, and a second binder. The specific surface area of the active material is S [m2/g]. The weight of the active material, the weight of the first binder, and the weight of the second binder are a, b, and c, respectively. The solution of {(b+c)/(a+b+c)}×100÷S is 0.3 or more. The electrode includes a first film in contact with the active material. The first film preferably includes a region in contact with the active material. The first film preferably includes a region with a thickness of 2 nm or more and 20 nm or less. The first film contains a water-soluble polymer.

公开(公告)号：US20220037666A1

公开(公告)日：2022-02-03

申请号：US17501462

申请日：2021-10-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kai Kimura ,  Kazutaka Kuriki ,  Teppei Oguni ,  Aya Uchida

IPC: H01M4/62 ,  H01G11/28 ,  H01G11/24 ,  H01G11/26 ,  H01G11/38 ,  H01M4/13 ,  H01M4/133 ,  H01M10/0525 ,  H01M10/0566

Abstract: A power storage device with high capacity or high energy density is provided. A highly reliable power storage device is provided. A long-life power storage device is provided. An electrode includes an active material, a first binder, and a second binder. The specific surface area of the active material is S [m2/g]. The weight of the active material, the weight of the first binder, and the weight of the second binder are a, b, and c, respectively. The solution of {(b+c)/(a+b+c)}×100÷S is 0.3 or more. The electrode includes a first film in contact with the active material. The first film preferably includes a region in contact with the active material. The first film preferably includes a region with a thickness of 2 nm or more and 20 nm or less. The first film contains a water-soluble polymer.

公开(公告)号：US09698412B2

公开(公告)日：2017-07-04

申请号：US15285725

申请日：2016-10-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro Inoue ,  Kai Kimura ,  Sachiko Kataniwa ,  Ryota Tajima

IPC: H01M10/05 ,  H01M4/131 ,  H01G11/68 ,  H01M4/62 ,  H01M4/1393 ,  H01M4/133 ,  H01M4/36 ,  H01G11/06 ,  H01G11/28 ,  H01G11/50 ,  H01G11/46 ,  H01G11/58 ,  H01M4/134 ,  H01M4/38 ,  H01M4/485 ,  H01G11/66 ,  H01M4/48 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/131 ,  H01G11/06 ,  H01G11/28 ,  H01G11/46 ,  H01G11/50 ,  H01G11/58 ,  H01G11/66 ,  H01G11/68 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/362 ,  H01M4/366 ,  H01M4/386 ,  H01M4/483 ,  H01M4/485 ,  H01M4/62 ,  H01M4/628 ,  H01M10/0525 ,  H01M2004/027 ,  Y02E60/122 ,  Y02E60/13 ,  Y02P70/54 ,  Y02T10/7022

Abstract: A decomposition reaction of an electrolyte solution and the like caused as a side reaction of charge and discharge is minimized in repeated charge and discharge of a lithium ion battery or a lithium ion capacitor, and thus the lithium ion battery or the lithium ion capacitor can have long-term cycle performance. A negative electrode for a power storage device includes a negative electrode current collector and a negative electrode active material layer which includes a plurality of particles of a negative electrode active material. Each of the particles of the negative electrode active material has an inorganic compound film containing a first inorganic compound on part of its surface. The negative electrode active material layer has a film in contact with an exposed part of the negative electrode active material and part of the inorganic compound film. The film contains an organic compound and a second inorganic compound.

公开(公告)号：US09490080B2

公开(公告)日：2016-11-08

申请号：US14859703

申请日：2015-09-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro Inoue ,  Kai Kimura ,  Sachiko Kataniwa ,  Ryota Tajima

IPC: H01M2/00 ,  H01G11/46 ,  H01G11/68 ,  H01M4/62 ,  H01M4/1393 ,  H01M4/133 ,  H01M4/36 ,  H01G11/06 ,  H01G11/28 ,  H01G11/50 ,  H01G11/58 ,  H01M4/131 ,  H01M4/134 ,  H01M4/38 ,  H01M4/485 ,  H01M4/02

CPC classification number: H01M4/131 ,  H01G11/06 ,  H01G11/28 ,  H01G11/46 ,  H01G11/50 ,  H01G11/58 ,  H01G11/66 ,  H01G11/68 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/362 ,  H01M4/366 ,  H01M4/386 ,  H01M4/483 ,  H01M4/485 ,  H01M4/62 ,  H01M4/628 ,  H01M10/0525 ,  H01M2004/027 ,  Y02E60/122 ,  Y02E60/13 ,  Y02P70/54 ,  Y02T10/7022

Abstract: A decomposition reaction of an electrolyte solution and the like caused as a side reaction of charge and discharge is minimized in repeated charge and discharge of a lithium ion battery or a lithium ion capacitor, and thus the lithium ion battery or the lithium ion capacitor can have long-term cycle performance. A negative electrode for a power storage device includes a negative electrode current collector and a negative electrode active material layer which includes a plurality of particles of a negative electrode active material. Each of the particles of the negative electrode active material has an inorganic compound film containing a first inorganic compound on part of its surface. The negative electrode active material layer has a film in contact with an exposed part of the negative electrode active material and part of the inorganic compound film. The film contains an organic compound and a second inorganic compound.

公开(公告)号：US20140127566A1

公开(公告)日：2014-05-08

申请号：US14060674

申请日：2013-10-23

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazutaka Kuriki ,  Kai Kimura ,  Nobuhiro Inoue ,  Ryota Tajima ,  Tamae Moriwaka ,  Kiyofumi Ogino

IPC: H01G9/048 ,  H01M4/04 ,  H01G9/00 ,  H01M4/36

CPC classification number: H01M4/366 ,  H01G11/06 ,  H01G11/28 ,  H01M4/667 ,  H01M10/4235 ,  Y02E60/13 ,  Y02P70/54 ,  Y02T10/7022

Abstract: Irreversible capacity which causes a decrease in the charge and discharge capacity of a power storage device is reduced, and electrochemical decomposition of an electrolyte solution and the like on a surface of an electrode is inhibited. Further, the cycle characteristics of the power storage device is improved by reducing or inhibiting a decomposition reaction of the electrolyte solution and the like occurring as a side reaction in repeated charging and discharging of the power storage device. A power storage device electrode includes a current collector and an active material layer that is over the current collector and includes a binder and an active material. A coating film is provided on at least part of a surface of the active material. The coating film is spongy.

Abstract translation: 导致蓄电装置的充放电能力下降的不可逆容量降低，电极表面的电解液等的电化学分解受到抑制。 此外，通过减少或抑制在蓄电装置的重复充放电中作为副反应而发生的电解液等的分解反应，能够提高蓄电装置的循环特性。 蓄电装置电极包括集电体和活性物质层，该活性物质层在集电体上方并且包括粘合剂和活性物质。 在活性物质表面的至少一部分上设置涂膜。 涂膜是海绵状的。

公开(公告)号：US20140099554A1

公开(公告)日：2014-04-10

申请号：US14032214

申请日：2013-09-20

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 ,  H01M4/36

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.

Abstract translation: 提高蓄电装置的可靠性。 使用包括碳的颗粒状活性材料，并且在颗粒活性材料的表面的一部分上形成网状结构。 在网状结构中，包含在粒状活性物质中的碳原子通过氧原子键合到硅原子或金属原子。 网状结构的形成抑制电解质溶液的还原分解，导致不可逆容量的降低。 使用上述活性物质的蓄电装置具有高循环性能和高可靠性。