公开(公告)号：US20170133673A1

公开(公告)日：2017-05-11

申请号：US15409566

申请日：2017-01-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya MIWA ,  Nobuhiro INOUE ,  Kuniharu NOMOTO ,  Junpei MOMO

IPC: H01M4/36 ,  H01M4/62 ,  C01B25/30 ,  C30B29/14 ,  C30B7/10 ,  C01B25/45 ,  H01M4/485 ,  H01M10/0525

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.

公开(公告)号：US20160268598A1

公开(公告)日：2016-09-15

申请号：US15165147

申请日：2016-05-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazutake KURIKI ,  Nobuhiro INOUE ,  Kiyofumi OGINO

IPC: H01M4/36 ,  H01G11/68 ,  H01M10/0525 ,  H01G11/72 ,  H01M4/38 ,  H01M10/0562

CPC classification number: H01M4/366 ,  H01G11/06 ,  H01G11/50 ,  H01G11/68 ,  H01G11/72 ,  H01M4/382 ,  H01M4/386 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2004/027 ,  Y02E60/122 ,  Y02E60/13 ,  Y02T10/7022

Abstract: A power storage device which has improved performance such as higher discharge capacity and in which deterioration due to peeling or the like of an active material layer is less likely to be caused is provided. In an electrode for the power storage device, phosphorus-doped amorphous silicon is used for the active material layer over a current collector as a material that can be alloyed with lithium, and niobium oxide is deposited over the active material layer as a layer containing niobium. Accordingly, the capacity of the power storage device can be increased and the cycle characteristics and the charge-discharge efficiency can be improved.

Abstract translation: 提供了一种具有改善的性能的蓄电装置，例如较高的放电容量，并且由于活性材料层的剥离等而导致的劣化不大可能。 在蓄电装置的电极中，作为可与锂合金化的材料，在集电体上使用磷掺杂非晶硅作为活性物质层，在活性物质层上沉积氧化铌作为含有铌的层 。 因此，能够提高蓄电装置的容量，能够提高循环特性和充放电效率。

公开(公告)号：US20160047060A1

公开(公告)日：2016-02-18

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: C30B29/14 ,  H01M4/1397 ,  H01M4/04

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.

公开(公告)号：US20150340691A1

公开(公告)日：2015-11-26

申请号：US14714479

申请日：2015-05-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro INOUE ,  Kiyofumi OGINO

IPC: H01M4/38 ,  H01M10/0525 ,  H01M4/48

CPC classification number: H01M4/386 ,  H01G11/06 ,  H01G11/24 ,  H01G11/50 ,  H01M4/13 ,  H01M4/134 ,  H01M4/366 ,  H01M4/38 ,  H01M4/48 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027 ,  Y02E60/13

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 includes a first region and a second region. The first region includes at least one element selected from Si, Mg, Ca, Ga, Al, Ge, Sn, Pb, Sb, Bi, Ag, Zn, Cd, As, Hg, and In. The second region includes oxygen and the same element as the one included in the first region. The crystallite size of the element included in the first region is larger than or equal to 1 nm and smaller than or equal to 10 nm.

Abstract translation: 提供高容量的蓄电装置。 或者，提供具有优异的循环特性的蓄电装置。 或者，提供具有高充放电效率的蓄电装置。 或者，提供寿命长的蓄电装置。 负极活性物质包括第一区域和第二区域。 第一区域包括选自Si，Mg，Ca，Ga，Al，Ge，Sn，Pb，Sb，Bi，Ag，Zn，Cd，As，Hg和In中的至少一种元素。 第二区域包括氧并且与包括在第一区域中的元件相同的元件。 包含在第一区域中的元素的微晶尺寸大于或等于1nm且小于或等于10nm。

公开(公告)号：US20150132649A1

公开(公告)日：2015-05-14

申请号：US14534275

申请日：2014-11-06

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kiyofumi OGINO ,  Yumiko YONEDA ,  Rika YATABE ,  Nobuhiro INOUE

IPC: H01M4/38 ,  H01M4/62

CPC classification number: H01M4/386 ,  H01M4/134 ,  H01M4/38 ,  H01M4/625

Abstract: A power storage device having high capacitance is provided. A power storage device with excellent cycle characteristics is provided. A power storage device with high charge and discharge efficiency is provided. A power storage device including a negative electrode with low resistance is provided. A negative electrode for the power storage device includes a current collector and an active material layer including a plurality of active material particles over the current collector. The active material particle is silicon, and the size of the silicon particle is greater than or equal to 0.001 μm and less than or equal to 7 μm.

Abstract translation: 提供具有高电容的蓄电装置。 提供了具有优异循环特性的蓄电装置。 提供具有高充放电效率的蓄电装置。 提供了包括具有低电阻的负极的蓄电装置。 蓄电装置的负极包括集电体和在集电体上包含多个活性物质粒子的活性物质层。 活性物质颗粒是硅，硅颗粒的尺寸大于或等于0.001μm且小于或等于7μm。

公开(公告)号：US20150086868A1

公开(公告)日：2015-03-26

申请号：US14494898

申请日：2014-09-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro INOUE ,  Ryota TAJIMA ,  Naoki KURIHARA ,  Junpei MOMO

IPC: H01M4/134 ,  H01M4/36 ,  H01M4/62

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.

Abstract translation: 本发明的一个实施方案的目的是提供一种其中抑制充放电循环特性恶化的二次电池，以抑制由负极中的活性物质的膨胀和收缩引起的缺陷的产生，或防止劣化 由二次电池的变形造成的。 为了防止劣化，可以使用能够与锂合金化并容易流动的材料用于负极。 为了将负极活性物质保持在集电体的表面上，设置覆盖负极活性物质的覆盖层。 此外，集电体和负极活性物质彼此接触的部分合金化。 换句话说，在负极中设置与集电体和负极活性物质两者接触的合金。

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。