公开(公告)号：US09735430B2

公开(公告)日：2017-08-15

申请号：US14598344

申请日：2015-01-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kai Kimura ,  Kazutaka Kuriki ,  Teppei Oguni ,  Aya Uchida

IPC: H01M4/13 ,  H01M4/62 ,  H01G11/28 ,  H01G11/24 ,  H01G11/26 ,  H01G11/38 ,  H01M4/133 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/44 ,  H01M4/02 ,  H01M10/42

CPC classification number: H01M4/622 ,  H01G11/24 ,  H01G11/26 ,  H01G11/28 ,  H01G11/38 ,  H01M4/13 ,  H01M4/133 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/446 ,  H01M2004/021 ,  H01M2010/4292 ,  H01M2220/20 ,  H01M2220/30 ,  Y02E60/122 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

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：US08945772B2

公开(公告)日：2015-02-03

申请号：US13644263

申请日：2012-10-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takahiro Kawakami ,  Hiroatsu Todoriki ,  Teppei Oguni ,  Takeshi Osada ,  Shunpei Yamazaki

IPC: H01M4/131 ,  H01M4/62

CPC classification number: H01M4/366 ,  H01M4/131 ,  H01M4/483 ,  H01M4/505 ,  H01M4/523 ,  H01M4/525 ,  H01M4/625 ,  H01M10/0525 ,  Y02E60/122

Abstract: A power storage device a positive electrode including a positive electrode active material layer and a negative electrode including a negative electrode active material layer. The positive electrode active material layer includes a plurality of particles of x[Li2MnO3]-(1−x)[LiCo1/3Mn1/3Ni1/3O2] (obtained by assigning 0.5 to x, for example) which is a positive electrode active material, and multilayer graphene with which the plurality of particles of the positive electrode active material are at least partly connected to each other. In the multilayer graphene, a plurality of graphenes are stacked in a layered manner. The graphene contains a six-membered ring composed of carbon atoms, a poly-membered ring which is a seven or more-membered ring composed of carbon atoms, and an oxygen atom bonded to one or more of the carbon atoms in the six-membered ring and the poly-membered ring, which is a seven or more-membered ring.

Abstract translation: 蓄电装置，包括正极活性物质层和含有负极活性物质层的负极的正极。 正极活性物质层包含多个x [Li 2 MnO 3] - （1-x）[LiCo1 / 3Mn1 / 3Ni1 / 3O2]（通过分配例如0.5〜x的x）作为正极活性物质的粒子， 以及所述多个正极活性物质的所述粒子至少部分地彼此连接的多层石墨烯。 在多层石墨烯中，以分层的方式层叠多个石墨烯。 石墨烯含有由碳原子组成的六元环，由碳原子构成的七元或更多元环的多元环，和与六元环中的一个或多个碳原子键合的氧原子 环和多元环，其为七元或多元环。

公开(公告)号：US20140023920A1

公开(公告)日：2014-01-23

申请号：US13940287

申请日：2013-07-12

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Teppei Oguni ,  Tamae Moriwaka ,  Junpei Momo ,  Ryota Tajima ,  Nobuhiro Inoue

IPC: H01M4/133

CPC classification number: H01M4/133 ,  H01M4/587

Abstract: A secondary battery in which graphite that is an active material can occlude and release lithium efficiently is provided. Further, a highly reliable secondary battery in which the amount of lithium inserted and extracted into/from graphite that is an active material is prevented from varying is provided. The secondary battery includes a negative electrode including a current collector and graphite provided over the current collector, and a positive electrode. The graphite includes a plurality of graphene layers. Surfaces of the plurality of graphene layers are provided substantially along the direction of an electric field generated between the positive electrode and the negative electrode.

Abstract translation: 提供了作为活性物质的石墨能够有效地吸留和释放锂的二次电池。 此外，提供了一种高可靠性的二次电池，其中防止插入和从石墨中提取的作为活性材料的锂的量变化。 二次电池包括设置在集电体上方的集电体和石墨的负极和正极。 石墨包括多个石墨烯层。 基本上沿着在正极和负极之间产生的电场的方向设置多个石墨烯层的表面。

公开(公告)号：US20130164611A1

公开(公告)日：2013-06-27

申请号：US13717750

申请日：2012-12-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kenryo NANBA ,  Minoru Takahashi ,  Ryota Tajima ,  Teppei Oguni ,  Junpei Momo

IPC: H01M4/70

CPC classification number: H01M4/70 ,  H01M4/134

Abstract: Disclosed is a power storage device including a negative electrode and a positive electrode. The negative electrode includes a negative electrode current collector including a common portion and a plurality of protrusions protruding from the common portion, and a negative electrode active material layer which covers a side surface of the protrusion. The positive electrode faces the negative electrode with an electrolyte provided therebetween. In the plurality of protrusions, a distance between adjacent protrusions is a distance with which adjacent negative electrode active material layers are in contact with each other before the capacity of the negative electrode active material layer reaches the theoretical capacity of the negative electrode active material layer by insertion of carrier ions from the positive electrode.

Abstract translation: 公开了一种包括负极和正极的蓄电装置。 负极包括负极集电体，该负极集电体包括公共部分和从公共部分突出的多个突起;以及负极活性物质层，其覆盖突起的侧面。 正电极面对负极，其间设置有电解质。 在多个突起中，相邻的突起之间的距离是在负极活性物质层的电容达到负极活性物质层的理论容量之前，相邻的负极活性物质层彼此接触的距离， 从正极插入载体离子。