公开(公告)号：US09852850B2

公开(公告)日：2017-12-26

申请号：US14802326

申请日：2015-07-17

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Nobuhiro Inoue ,  Ryota Tajima ,  Kazutaka Kuriki ,  Mitsuhiro Ichijo ,  Yoshikazu Hiura ,  Mai Sugikawa

IPC: H01M4/136 ,  H01M4/131 ,  H01M4/134 ,  H01M10/0525 ,  H01G11/30 ,  H01M4/13 ,  H01M4/36 ,  H01M4/38 ,  H01M10/052 ,  H01M4/04 ,  H01M4/133 ,  H01M4/139 ,  H01M4/58 ,  H01M4/587 ,  H01M10/04 ,  H01M10/058 ,  H01M10/0585 ,  H01M10/42

CPC classification number: H01G11/30 ,  H01M4/0428 ,  H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/139 ,  H01M4/366 ,  H01M4/386 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0427 ,  H01M10/0431 ,  H01M10/0436 ,  H01M10/052 ,  H01M10/058 ,  H01M10/0585 ,  H01M10/425 ,  H01M2220/20 ,  H01M2220/30 ,  Y02E60/122 ,  Y02E60/13 ,  Y02P70/54 ,  Y02T10/7011 ,  Y02T10/7022

Abstract: A power storage device with high capacity is provided. Alternatively, a power storage device with excellent cycle characteristics is provided. Alternatively, a power storage device with high charge and discharge efficiency is provided. Alternatively, a power storage device with a long lifetime is provided. A negative electrode active material is provided over a negative electrode current collector, and the negative electrode active material layer is formed in such a manner that first layers and second layers are alternately stacked. The first layer includes at least an element selected from Si, Mg, Ca, Ga, Al, Ge, Sn, Pb, Sb, Bi, Ag, Zn, Cd, As, Hg, and In. The second layer includes oxygen and the same element as the one included in the first layer.

公开(公告)号：US09685653B2

公开(公告)日：2017-06-20

申请号：US15200015

申请日：2016-07-01

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

IPC: H01M10/04 ,  H01M4/04 ,  H01G11/28 ,  H01M4/62 ,  H01G11/50 ,  H01G11/84 ,  H01M4/133 ,  H01M4/583 ,  H01M10/0525 ,  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：US09685277B2

公开(公告)日：2017-06-20

申请号：US15011857

申请日：2016-02-01

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoshi Murakami ,  Kazutaka Kuriki ,  Mikio Yukawa

IPC: H01M4/58 ,  H01G11/24 ,  C23C16/24 ,  H01G11/30 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/66 ,  H01G11/46 ,  H01M4/48 ,  H01M4/52 ,  H01M10/0525

CPC classification number: H01G11/24 ,  C23C16/24 ,  H01G11/30 ,  H01G11/46 ,  H01M4/0428 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/48 ,  H01M4/52 ,  H01M4/661 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2220/30 ,  Y02E60/122 ,  Y02E60/13 ,  Y02P70/54 ,  Y02T10/7022 ,  Y10T29/417 ,  Y10T29/49115

Abstract: An electrode which can have an improved performance such as higher discharge capacity and in which deterioration due to peeling of an active material layer or the like is difficult to occur are provided. The electrode includes an active material layer including a first protrusion, a second protrusion and a continuous active material film, a metal oxide layer, and a continuous mixed layer. The first protrusion, the second protrusion and the continuous active material film includes silicon. The metal oxide layer includes oxygen and a metal element which is capable of forming silicide by reacting with silicon. The continuous mixed layer includes silicon and the metal element.

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。

公开(公告)号：US11152622B2

公开(公告)日：2021-10-19

申请号：US16728135

申请日：2019-12-27

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

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：US10862177B2

公开(公告)日：2020-12-08

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: H01M2/26 ,  H01M10/46 ,  H02J50/20 ,  H01M10/0562 ,  H01M10/613 ,  H01L21/822 ,  H01L27/06 ,  H01M10/052 ,  H01M10/42 ,  H01M10/623 ,  A61N1/378 ,  G06F1/16 ,  H01L27/12 ,  H01L29/786 ,  H01M10/0525 ,  H01M10/0585 ,  H02J7/02

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：US10483044B2

公开(公告)日：2019-11-19

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

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：US10354810B2

公开(公告)日：2019-07-16

申请号：US14645090

申请日：2015-03-11

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tatsuya Ikenuma ,  Kazutaka Kuriki ,  Ai Nakagawa

IPC: H01G11/30 ,  H01G11/38 ,  H01G11/40 ,  H01G11/86 ,  H01M4/13 ,  H01M4/1393 ,  H01M4/133 ,  H01M4/36 ,  H01M4/58 ,  H01M4/587 ,  H01M4/62 ,  H01M4/04 ,  G06F1/16 ,  H01M4/02

Abstract: The cycle performance of a lithium-ion secondary battery or a lithium-ion capacitor can be obtained by minimizing the decomposition reaction of an electrolytic solution, etc. in the repeated charge and discharge cycles of the lithium-ion secondary battery or the lithium-ion capacitor. An electrode includes a current collector and an active material layer over the current collector. The active material layer includes active material particles, a conductive additive, a binder, and a film containing silicon oxide as its main component. The surface of one of the active material particles includes at least one of a region in contact with the surface of another active material particle, a region in contact with the conductive additive, and a region in contact with the binder. The surface of the active material particle except these regions is at least partly in contact with the film containing silicon oxide as its main component.

公开(公告)号：US10263243B2

公开(公告)日：2019-04-16

申请号：US15932208

申请日：2018-02-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01M2/02 ,  H01M4/04 ,  H01G11/28 ,  H01M4/62 ,  H01G11/50 ,  H01G11/84 ,  H01M4/133 ,  H01M4/583 ,  H01M10/0525 ,  H01M4/02

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.