公开(公告)号：US20200259183A1

公开(公告)日：2020-08-13

申请号：US16861306

申请日：2020-04-29

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tatsuya IKENUMA ,  Takahiro KAWAKAMI ,  Yohei MOMMA ,  Teruaki OCHIAI

IPC: H01M4/62 ,  H01M10/052 ,  H01M4/139 ,  H01M4/04

Abstract: In manufacture of a storage battery electrode containing graphene as a conductive additive, the efficiency of reduction of graphene oxide under mild conditions is increased, and cycle characteristics and rate characteristics of a storage battery are improved. Provided is a manufacturing method of a storage battery electrode. In the manufacturing method, a first mixture containing an active material, graphene oxide, and a solvent is formed; a reducing agent is added to the first mixture and the graphene oxide is reduced to form a second mixture; a binder is mixed with the second mixture to form a third mixture; and the third mixture is applied to a current collector and the solvent is evaporated to form an active material layer.

公开(公告)号：US20180175386A1

公开(公告)日：2018-06-21

申请号：US15874123

申请日：2018-01-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takahiro KAWAKAMI ,  Tatsuya IKENUMA ,  Teruaki OCHIAI ,  Shuhei YOSHITOMI ,  Mako MOTOYOSHI ,  Hiroyuki MIYAKE ,  Yohei MOMMA ,  Takuya HIROHASHI ,  Satoshi SEO

IPC: H01M4/485 ,  H01M4/48 ,  G06F1/16 ,  H01M4/62 ,  H01M4/583 ,  H01M4/505 ,  G04G21/00 ,  H01M4/525 ,  H01M4/36 ,  H01M10/052

CPC classification number: H01M4/485 ,  G04C10/00 ,  G04G21/00 ,  G06F1/16 ,  G06F1/1626 ,  G06F1/163 ,  G06F1/1635 ,  G06F1/1652 ,  H01M4/366 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/623 ,  H01M4/625 ,  H01M10/052 ,  H01M2220/30

Abstract: A lithium-ion secondary battery with high capacity is provided. Alternatively, a lithium-ion secondary battery with unproved cycle characteristics is provided. To achieve this, an active material including a particle having a cleavage plane and a layer containing carbon covering at least part of the cleavage plane is provided. The particle having the cleavage plane contains lithium, manganese, nickel, and oxygen. The layer containing carbon preferably contains graphene. When a lithium-ion secondary battery is fabricated using an electrode including the particle having the cleavage plane at least part of which is covered with the layer containing carbon as an active material, the discharge capacity can be increased and the cycle characteristics can be improved.

公开(公告)号：US20160118666A1

公开(公告)日：2016-04-28

申请号：US14885583

申请日：2015-10-16

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Tatsuya IKENUMA ,  Takahiro KAWAKAMI ,  Yohei MOMMA ,  Teruaki OCHIAI

IPC: H01M4/62 ,  H01M4/04 ,  H01M10/0525

CPC classification number: H01M4/625 ,  H01M4/0404 ,  H01M4/139 ,  H01M4/621 ,  H01M4/623 ,  H01M10/052 ,  H01M2220/30 ,  Y02E60/122 ,  Y02P70/54

Abstract: In manufacture of a storage battery electrode containing graphene as a conductive additive, the efficiency of reduction of graphene oxide under mild conditions is increased, and cycle characteristics and rate characteristics of a storage battery are improved. Provided is a manufacturing method of a storage battery electrode. In the manufacturing method, a first mixture containing an active material, graphene oxide, and a solvent is formed; a reducing agent is added to the first mixture and the graphene oxide is reduced to form a second mixture; a binder is mixed with the second mixture to form a third mixture; and the third mixture is applied to a current collector and the solvent is evaporated to form an active material layer.

Abstract translation: 在制造含有石墨烯作为导电添加剂的蓄电池电极的情况下，在温和条件下氧化石墨烯的还原效率提高，蓄电池的循环特性和速率特性提高。 提供一种蓄电池电极的制造方法。 在制造方法中，形成含有活性物质，石墨烯氧化物和溶剂的第一混合物， 向第一混合物中加入还原剂，还原氧化石墨烯以形成第二混合物; 将粘合剂与第二混合物混合以形成第三混合物; 并将第三混合物施加到集电器上，并蒸发溶剂以形成活性物质层。

公开(公告)号：US20160111700A1

公开(公告)日：2016-04-21

申请号：US14879330

申请日：2015-10-09

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tatsuya IKENUMA ,  Kazutaka KURIKI ,  Ai NAKAGAWA

IPC: H01M2/16 ,  H01M2/14

Abstract: Provided is an electrode including a current collector and an active material layer. The active material layer includes an active material, a film including silicone, a conductive additive, and a binder. The active material is in the form of a particle. The film including silicone covers at least part of the active material.

Abstract translation: 提供了包括集电体和活性物质层的电极。 活性物质层包括活性物质，包括硅氧烷，导电添加剂和粘合剂的膜。 活性物质是颗粒的形式。 包括硅酮的薄膜覆盖至少部分活性材料。

公开(公告)号：US20240413342A1

公开(公告)日：2024-12-12

申请号：US18810764

申请日：2024-08-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tatsuya IKENUMA ,  Takahiro KAWAKAMI ,  Yohei MOMMA ,  Teruaki OCHIAI

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/139 ,  H01M10/052

Abstract: In manufacture of a storage battery electrode containing graphene as a conductive additive, the efficiency of reduction of graphene oxide under mild conditions is increased, and cycle characteristics and rate characteristics of a storage battery are improved. Provided is a manufacturing method of a storage battery electrode. In the manufacturing method, a first mixture containing an active material, graphene oxide, and a solvent is formed; a reducing agent is added to the first mixture and the graphene oxide is reduced to form a second mixture; a binder is mixed with the second mixture to form a third mixture; and the third mixture is applied to a current collector and the solvent is evaporated to form an active material layer.

公开(公告)号：US20240250237A1

公开(公告)日：2024-07-25

申请号：US18625418

申请日：2024-04-03

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tatsuya IKENUMA ,  Yumiko YONEDA

IPC: H01M4/133 ,  C01B32/184 ,  H01M4/04 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/62

CPC classification number: H01M4/133 ,  C01B32/184 ,  H01M4/0416 ,  H01M4/049 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/625 ,  Y02E60/10 ,  Y02E60/13

Abstract: To provide graphene oxide that has high dispersibility and is easily reduced. To provide graphene with high electron conductivity. To provide a storage battery electrode including an active material layer with high electric conductivity and a manufacturing method thereof. To provide a storage battery with increased discharge capacity. A method for manufacturing a storage battery electrode that is to be provided includes a step of dispersing graphene oxide into a solution containing alcohol or acid, a step of heating the graphene oxide dispersed into the solution, and a step or reducing the graphene oxide.

公开(公告)号：US20170352864A1

公开(公告)日：2017-12-07

申请号：US15538049

申请日：2015-12-25

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takahiro KAWAKAMI ,  Yohei MOMMA ,  Teruaki OCHIAI ,  Tatsuya IKENUMA

IPC: H01M4/04 ,  H01M4/139 ,  H01M4/62

CPC classification number: H01M4/0404 ,  H01M4/0471 ,  H01M4/13 ,  H01M4/139 ,  H01M4/625 ,  H01M2220/30

Abstract: In manufacturing a storage battery electrode, a method for manufacturing a storage battery electrode with high capacity and stability is provided.As a method for preventing a mixture for forming an active material layer from becoming strongly basic, a first aqueous solution is formed by mixing an active material exhibiting basicity with an aqueous solution exhibiting acidity and including an oxidized derivative of a first conductive additive; a first mixture is formed by reducing the oxidized derivative of the first conductive additive by drying the first aqueous solution; a second mixture is formed by mixing a second conductive additive and a binder; a third mixture is formed by mixing the first mixture and the second mixture; and a current collector is coated with the third mixture. The strong basicity of the mixture for forming an active material layer is lowered; thus, the binder can be prevented from becoming gelled.

公开(公告)号：US20160118646A1

公开(公告)日：2016-04-28

申请号：US14887370

申请日：2015-10-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tatsuya IKENUMA

IPC: H01M4/1393 ,  H01M4/583 ,  H01M4/04

CPC classification number: H01M4/0438 ,  H01M4/0416 ,  H01M4/0471 ,  H01M4/625 ,  H01M10/052 ,  Y02E60/122 ,  Y02P70/54

Abstract: In manufacture of a storage battery electrode containing graphene as a conductive additive, the efficiency of reduction of graphene oxide is reduced with high efficiency under mild conditions, and cycle characteristics and rate characteristics of a storage battery are improved. Provided is a manufacturing method of a storage battery electrode. In the manufacturing method, a paste containing an active material, a binder, graphene oxide, and a solvent is formed; the paste is applied to a current collector and the solvent contained in the paste is evaporated to form an active material layer; the active material layer is immersed in a liquid containing alcohol; and the active material layer is taken out from the liquid and heated so that the graphene oxide is reduced.

Abstract translation: 在制造含有石墨烯作为导电添加剂的蓄电池电极的情况下，在温和条件下，氧化石墨烯的还原效率高效率降低，蓄电池的循环特性和速率特性得到改善。 提供一种蓄电池电极的制造方法。 在制造方法中，形成含有活性物质，粘合剂，氧化石墨烯和溶剂的糊剂。 将糊状物施加到集电体上，并将包含在糊料中的溶剂蒸发以形成活性物质层; 将活性物质层浸入含有醇的液体中; 将活性物质层从液体中取出并加热，使氧化石墨烯被还原。

公开(公告)号：US20160064726A1

公开(公告)日：2016-03-03

申请号：US14836420

申请日：2015-08-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tatsuya IKENUMA ,  Yumiko YONEDA (Former SAITO)

IPC: H01M4/133 ,  C01B31/04 ,  H01M4/04 ,  H01M4/587

Abstract: To provide graphene oxide that has high dispersibility and is easily reduced. To provide graphene with high electron conductivity. To provide a storage battery electrode including an active material layer with high electric conductivity and a manufacturing method thereof. To provide a storage battery with increased discharge capacity. A method for manufacturing a storage battery electrode that is to be provided includes a step of dispersing graphene oxide into a solution containing alcohol or acid, a step of heating the graphene oxide dispersed into the solution, and a step or reducing the graphene oxide.

Abstract translation: 提供具有高分散性且容易降低的氧化石墨烯。 提供具有高电子导电性的石墨烯。 提供一种具有高导电性的活性物质层的蓄电池电极及其制造方法。 提供具有增加放电容量的蓄电池。 要提供的蓄电池电极的制造方法包括将氧化石墨烯分散在含有醇或酸的溶液中的步骤，加热分散在溶液中的氧化石墨烯的步骤，或者还原氧化石墨烯。

公开(公告)号：US20150325855A1

公开(公告)日：2015-11-12

申请号：US14704508

申请日：2015-05-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takahiro KAWAKAMI ,  Tatsuya IKENUMA ,  Teruaki OCHIAI ,  Shunhei YOSHITOMI ,  Mako MOTOYOSHI ,  Hiroyuki MIYAKE ,  Yohei MOMMA ,  Takuya HIROHASHI ,  Satoshi SEO

IPC: H01M4/485 ,  H01M4/48 ,  G06F1/16 ,  H01M4/62 ,  H01M4/583 ,  H01M10/052 ,  H01M4/36

CPC classification number: H01M4/485 ,  G04C10/00 ,  G04G21/00 ,  G06F1/16 ,  G06F1/1626 ,  G06F1/163 ,  G06F1/1635 ,  G06F1/1652 ,  H01M4/366 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/623 ,  H01M4/625 ,  H01M10/052 ,  H01M2220/30

Abstract: A lithium-ion secondary battery with high capacity is provided. Alternatively, a lithium-ion secondary battery with improved cycle characteristics is provided. To achieve this, an active material including a particle having a cleavage plane and a layer containing carbon covering at least part of the cleavage plane is provided. The particle having the cleavage plane contains lithium, manganese, nickel, and oxygen. The layer containing carbon preferably contains graphene. When a lithium-ion secondary battery is fabricated using an electrode including the particle having the cleavage plane at least part of which is covered with the layer containing carbon as an active material, the discharge capacity can be increased and the cycle characteristics can be improved.

Abstract translation: 提供高容量的锂离子二次电池。 或者，提供具有改善的循环特性的锂离子二次电池。 为了实现这一点，提供了包括具有解理面的粒子和包含至少部分解理面的碳的活性物质。 具有解理面的粒子含有锂，锰，镍和氧。 含碳层优选含有石墨烯。 当使用包括具有解理面的电极的电极制造锂离子二次电池时，其中至少一部分被包含碳作为活性材料的层被覆盖，可以提高放电容量并提高循环特性。