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：US09556536B2

公开(公告)日：2017-01-31

申请号：US14923798

申请日：2015-10-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya Miwa ,  Nobuhiro Inoue ,  Kuniharu Nomoto ,  Junpei Momo

IPC: H01M4/485 ,  C30B29/14 ,  H01M4/04 ,  H01M4/583 ,  C01B25/30 ,  C01B25/45 ,  C01B31/04 ,  H01M4/1397 ,  H01M4/02

CPC classification number: H01M4/366 ,  C01B25/306 ,  C01B25/45 ,  C01B32/23 ,  C01P2006/40 ,  C30B7/10 ,  C30B29/14 ,  H01M4/04 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/1397 ,  H01M4/485 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525 ,  H01M2004/028 ,  Y02P70/54

Abstract: Occlusion and release of lithium ion are likely to one-dimensionally occur in the b-axis direction of a crystal in a lithium-containing composite oxide having an olivine structure. Thus, a positive electrode in which the b-axes of lithium-containing composite oxide single crystals are oriented vertically to a surface of a positive electrode current collector is provided. The lithium-containing composite oxide particles are mixed with graphene oxide and then pressure is applied thereto, whereby the rectangular parallelepiped or substantially rectangular parallelepiped particles are likely to slip. In addition, in the case where the rectangular parallelepiped or substantially rectangular parallelepiped particles whose length in the b-axis direction is shorter than those in the a-axis direction and the c-axis direction are used, when pressure is applied in one direction, the b-axes can be oriented in the one direction.

Abstract translation: 具有橄榄石结构的含锂复合氧化物中的结晶的b轴方向的锂离子的闭塞和释放容易发生一维的变化。 因此，提供了含锂复合氧化物单晶的b轴与正极集电体的表面垂直取向的正极。 将含锂复合氧化物颗粒与氧化石墨烯混合，然后施加压力，由此长方体或大致长方体的颗粒容易滑动。 此外，在使用长度方向的长轴方向的长方体或长方形的长方体的长度比a轴方向和c轴方向短的情况下，在一个方向施加压力的情况下， b轴可以在一个方向上定向。

公开(公告)号：US09461341B2

公开(公告)日：2016-10-04

申请号：US14107237

申请日：2013-12-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Junpei Momo ,  Hiroyuki Miyake ,  Kei Takahashi

IPC: H02J7/00 ,  H01M10/46 ,  H01M10/42 ,  H01M10/0525 ,  H01M10/0583 ,  H01M10/0585 ,  H01M4/96 ,  H01M10/44 ,  H02J7/02 ,  H02J7/35 ,  H01M2/16 ,  H01M10/02 ,  H01M10/04 ,  H01M4/02

CPC classification number: H02J7/0068 ,  H01M2/1673 ,  H01M4/96 ,  H01M10/02 ,  H01M10/045 ,  H01M10/0525 ,  H01M10/0583 ,  H01M10/0585 ,  H01M10/4242 ,  H01M10/425 ,  H01M10/44 ,  H01M10/46 ,  H01M2004/025 ,  H01M2010/4271 ,  H02J7/007 ,  H02J7/025 ,  H02J7/35 ,  H02J50/12 ,  H02J50/20 ,  H02J50/80 ,  Y02E60/122 ,  Y02E60/50 ,  Y02T10/7011

Abstract: A decrease in the capacity of a power storage device is inhibited by adjusting or reducing imbalance in the amount of inserted and extracted carrier ions between positive and negative electrodes, which is caused by decomposition of an electrolyte solution of the negative electrode. Further, the capacity of the power storage device can be restored. Furthermore, impurities in the electrolyte solution can be decomposed with the use of the third electrode. A power storage device including positive and negative electrodes, an electrolyte, and a third electrode is provided. The third electrode has an adequate electrostatic capacitance. The third electrode can include a material with a large surface area. In addition, a method for charging the power storage device including the steps of performing charging by applying a current between the positive and negative electrodes, and performing additional applying a current between the third electrode and the negative electrode is provided.

Abstract translation: 通过调节或减少由负极的电解液的分解引起的正极和负极之间的插入和提取的载流子的量的不平衡，可以抑制蓄电装置的容量的下降。 此外，可以恢复蓄电装置的容量。 此外，电解质溶液中的杂质可以通过使用第三电极而分解。 提供了包括正极和负极，电解质和第三电极的蓄电装置。 第三电极具有足够的静电电容。 第三电极可以包括具有大表面积的材料。 另外，提供了一种蓄电装置的充电方法，包括以下步骤：通过在正极和负极之间施加电流并且在第三电极和负极之间执行附加的电流来进行充电。

公开(公告)号：US20160233031A1

公开(公告)日：2016-08-11

申请号：US15097565

申请日：2016-04-13

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Junpei Momo ,  Hiroatsu Todoriki ,  Kuniharu Nomoto

IPC: H01G11/32 ,  H01G11/42 ,  H01G11/40 ,  H01G11/38 ,  H01G11/06 ,  H01G11/52 ,  H01G11/66 ,  H01G11/56 ,  H01G11/74 ,  H01G11/78 ,  H01G11/86 ,  H01M4/04 ,  H01M4/587 ,  H01M4/62 ,  H01M4/133 ,  H01M4/1393 ,  H01M10/0525 ,  H01M10/058 ,  H01G11/34

Abstract: A power storage device with high output is provided, in which the specific surface area is increased while keeping the easy-to-handle particle size of its active material. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte. The negative electrode active material layer includes a negative electrode active material which is a particle in which a plurality of slices of graphite is overlapped with each other with a gap therebetween. It is preferable that the grain diameter of the particle be 1 μm to 50 μm. Further, it is preferable that the electrolyte be in contact with the gap between the slices of graphite.

Abstract translation: 提供了具有高输出功率的蓄电装置，其中比表面积增加同时保持其活性材料的易于处理的粒度。 蓄电装置具备包括正极集电体和正极活性物质层的正极，负极集电体和负极活性物质层的负极以及电解质。 负极活性物质层包括负极活性物质，该负极活性物质是多个石墨片彼此重叠并具有间隙的粒子。 粒子的粒径优选为1μm〜50μm。 此外，优选电解质与石墨片之间的间隙接触。

公开(公告)号：US20140184165A1

公开(公告)日：2014-07-03

申请号：US14107347

申请日：2013-12-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru TAKAHASHI ,  Kei Takahashi ,  Jun Koyama ,  Junpei Momo ,  Tamae Moriwaka

IPC: H01M10/48

CPC classification number: H01M10/48 ,  G01R31/3606 ,  H01M10/486

Abstract: To provide a power storage device, an operation condition of which is easily analyzed. A secondary battery includes a sensor that is a measurement unit, a microcontroller unit that is a determination unit, and a memory that is a memory unit. With the sensor, conditions of the secondary battery such as the remaining battery power, the voltage, the current, and the temperature are measured. The microcontroller unit performs arithmetic processing of the measurement results and determines the operation condition of the secondary battery. Further, the microcontroller unit stores the measurement result in the memory in accordance with the operation condition of the secondary battery.

Abstract translation: 为了提供蓄电装置，其操作条件容易分析。 二次电池包括作为测量单元的传感器，作为确定单元的微控制器单元和作为存储单元的存储器。 使用传感器，测量二次电池的状况，例如剩余电池功率，电压，电流和温度。 微控制器单元执行测量结果的算术处理并确定二次电池的操作状态。 此外，微控制器单元根据二次电池的操作条件将测量结果存储在存储器中。

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。