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：US11276685B2

公开(公告)日：2022-03-15

申请号：US17009823

申请日：2020-09-02

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Junpei Momo ,  Kazutaka Kuriki ,  Hiromichi Godo

IPC: H01L27/00 ,  H01L29/00 ,  H01L27/06 ,  H01G11/14 ,  H01L29/786 ,  H01L27/12 ,  H01L29/66 ,  H01G11/08 ,  H01L21/8258

Abstract: A semiconductor device in which a circuit and a power storage element are efficiently placed is provided. The semiconductor device includes a first transistor, a second transistor, and an electric double-layer capacitor. The first transistor, the second transistor, and the electric double-layer capacitor are provided over one substrate. A band gap of a semiconductor constituting a channel region of the second transistor is wider than a band gap of a semiconductor constituting a channel region of the first transistor. The electric double-layer capacitor includes a solid electrolyte.

公开(公告)号：US11075533B2

公开(公告)日：2021-07-27

申请号：US16658194

申请日：2019-10-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru Takahashi ,  Junpei Momo ,  Hiroyuki Miyake ,  Kei Takahashi

IPC: H02J7/04 ,  H02J7/16 ,  H02J7/00 ,  H01M10/44 ,  B60L50/15 ,  B60L53/10 ,  B60L58/25 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525

Abstract: A lithium ion secondary battery includes a positive electrode including a positive electrode active material layer containing lithium iron phosphate, a negative electrode including a negative electrode active material layer containing graphite, and an electrolyte including a lithium salt and a solvent including ethylene carbonate and diethyl carbonate between the positive electrode and the negative electrode. When the battery temperature of the lithium ion secondary battery or the temperature of an environment in which the lithium ion secondary battery is used is T and given temperatures are T1 and T2 (T1

公开(公告)号：US10770729B2

公开(公告)日：2020-09-08

申请号：US14988159

申请日：2016-01-05

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Ryota Tajima ,  Junpei Momo ,  Masaki Yamakaji

IPC: H01M2/02 ,  H01M4/62 ,  H01M10/04 ,  H01M4/13

Abstract: A flexible power storage device or a power storage device of which the capacity and cycle characteristics do not easily deteriorate even when the power storage device is curved is provided. An electrode in which an active material layer, a current collector, and a friction layer are stacked in this order is provided. Furthermore, a power storage device that includes the electrode as at least one of a positive electrode and a negative electrode is provided.

公开(公告)号：US10608290B2

公开(公告)日：2020-03-31

申请号：US14943070

申请日：2015-11-17

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Masaki Yamakaji ,  Junpei Momo ,  Ryota Tajima ,  Takahiro Kasahara

IPC: H01M10/42 ,  H01M10/48 ,  H01M2/02 ,  H01M10/0525

Abstract: To provide a lithium-ion storage battery or electronic device that is flexible and highly safe. One embodiment of the present invention is a flexible storage battery including a positive electrode, a negative electrode, a separator between the positive electrode and the negative electrode, an exterior body that surrounds the positive electrode, the negative electrode, and the separator, and a wiring provided along the exterior body. At least part of the wiring is more easily breakable by deformation than the exterior body. The wiring is more vulnerable to deformation than the exterior body and thus damaged earlier than the exterior body. Damage to the wiring is detected and an alert is sent to a user; thus, the use of the storage battery can be stopped before the exterior body is damaged.

公开(公告)号：US10446881B2

公开(公告)日：2019-10-15

申请号：US15432337

申请日：2017-02-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Junpei Momo

IPC: H01M10/00 ,  H01M10/44 ,  H01M2/16 ,  H01M10/0525 ,  H01M10/46 ,  H02J7/00 ,  H01M2/40 ,  H01M10/052 ,  H01M10/058 ,  H01M10/42 ,  H01M2/12 ,  H01M10/0583 ,  H01M10/0585

Abstract: A power storage system or a power storage device that can restore reduced capacity is provided. The power storage device includes a first exterior body, a first electrode, a second electrode, a first electrolyte solution, and a carrier ion permeable film. The first electrode, the second electrode, and the first electrolyte solution are covered with the first exterior body. The first electrode and the second electrode are in contact with the first electrolyte solution. The first electrolyte solution includes carrier ions. A first opening is provided in the first exterior body. The carrier ion permeable film is provided to be in contact with the first electrolyte solution and so as to block the first opening without any space. The carrier ion permeable film is configured to be impermeable to water and air but permeable to the carrier ions.

公开(公告)号：US10204898B2

公开(公告)日：2019-02-12

申请号：US14817242

申请日：2015-08-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Junpei Momo ,  Kazutaka Kuriki ,  Hiromichi Godo

IPC: H01L29/94 ,  H01L27/06 ,  H01L29/66 ,  H01L29/786 ,  H01G11/14 ,  H01L21/8258 ,  H01G11/08

Abstract: A semiconductor device in which a circuit and a power storage element are efficiently placed is provided. The semiconductor device includes a first transistor, a second transistor, and an electric double-layer capacitor. The first transistor, the second transistor, and the electric double-layer capacitor are provided over one substrate. A band gap of a semiconductor constituting a channel region of the second transistor is wider than a band gap of a semiconductor constituting a channel region of the first transistor. The electric double-layer capacitor includes a solid electrolyte.

公开(公告)号：US10153479B2

公开(公告)日：2018-12-11

申请号：US14886298

申请日：2015-10-19

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Junpei Momo ,  Yohei Momma

IPC: H01M4/04 ,  H01M10/04

Abstract: A fabricating method and a fabricating apparatus for a lithium-ion secondary battery having stable charge characteristics and lifetime characteristics are provided. A positive electrode is subjected to an electrochemical reaction in a large amount of electrolyte solution in advance before a secondary battery is completed. In this manner, the positive electrode can have stability. In a manner similar to that of the positive electrode, a negative electrode is also subjected to the electrochemical reaction in a large amount of the electrolyte solution in advance, whereby a high reliable secondary battery can be manufactured.

公开(公告)号：US09991575B2

公开(公告)日：2018-06-05

申请号：US15343769

申请日：2016-11-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru Takahashi ,  Shunpei Yamazaki ,  Masaaki Hiroki ,  Kei Takahashi ,  Junpei Momo

IPC: H01M10/6571 ,  H01M10/44 ,  H01M10/63 ,  H01M10/637 ,  H01M10/46 ,  H01M10/48 ,  H02J7/35 ,  H02S10/20 ,  H01M10/615 ,  H01M10/0525 ,  H02J7/00 ,  H01M10/052

CPC classification number: H01M10/6571 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/443 ,  H01M10/465 ,  H01M10/486 ,  H01M10/615 ,  H01M10/63 ,  H01M10/637 ,  H02J7/007 ,  H02J7/35 ,  H02S10/20 ,  Y02E60/122

Abstract: Disclosed is a power storage unit which can safely operate over a wide temperature range. The power storage unit includes: a power storage device; a heater for heating the power storage device; a temperature sensor for sensing the temperature of the power storage device; and a control circuit configured to inhibit charge of the power storage device when its temperature is lower than a first temperature or higher than a second temperature. The first temperature is exemplified by a temperature which allows the formation of a dendrite over a negative electrode of the power storage device, whereas the second temperature is exemplified by a temperature which causes decomposition of a passivating film formed over a surface of a negative electrode active material.

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.