公开(公告)号：US20150280283A1

公开(公告)日：2015-10-01

申请号：US14661249

申请日：2015-03-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yutaka OYAMA

IPC: H01M10/0568 ,  H01M10/052

CPC classification number: H01M10/0568 ,  H01M4/583 ,  H01M10/052 ,  H01M2010/4292 ,  H01M2300/0025 ,  H01M2300/0045 ,  Y02T10/7011

Abstract: A nonaqueous electrolyte secondary battery proposed herein is configured such that a positive-electrode active material layer includes graphite particles and a gas generant. Further, an electrolyte solution includes an α solute. Here, a relationship between an upper limit electric potential X of a positive electrode in a predetermined normal use area, an electric potential Y at which an amount of the α solute in the electrolyte solution begins to decrease due to the graphite particles, and an electric potential Z at which the gas generant begins to generate gas is X

Abstract translation: 这里提出的非水电解质二次电池被构造成使得正极活性物质层包括石墨颗粒和气体发生剂。 此外，电解质溶液包括α溶质。 这里，预定正常使用区域中的正极的上限电位X与电解质溶液中的α溶质的量由于石墨颗粒而开始降低的电位Y之间的关系，以及电 气体发生剂开始产生气体的电位Z为X

公开(公告)号：US20160308185A1

公开(公告)日：2016-10-20

申请号：US15095592

申请日：2016-04-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinpei KONDO ,  Yutaka OYAMA ,  Akihiro OCHIAI

IPC: H01M2/16 ,  H01M10/0525 ,  H01M2/14

CPC classification number: H01M2/1686 ,  H01M2/145 ,  H01M2/1653 ,  H01M10/05 ,  H01M10/4235 ,  H01M2220/20

Abstract: A separator includes a substrate layer made of a resin and a heat resistance layer. The heat resistance layer contains heat-resistant fine particles and a binder. An amount of the binder contained per unit volume in the heat resistance layer positioned at an end portion in a width direction perpendicular to a longitudinal direction of the separator is higher than the amount of the binder contained per unit volume in the heat resistance layer (84) positioned at a center portion which includes the center in the width direction of the separator. In the heat resistance layer at the end portion, the amount of the binder contained per unit volume in a substrate layer side region is higher than the amount of the binder contained per unit volume in a surface region which includes a surface of the heat resistance layer.

Abstract translation: 隔板包括由树脂制成的基板层和耐热层。 耐热层含有耐热细颗粒和粘合剂。 位于与隔板的长度方向垂直的宽度方向的端部的耐热层中的每单位体积含有的粘合剂的量比耐热层（84）中每单位体积含有的粘合剂的量高 ）定位在包括隔板宽度方向中心的中心部分。 在端部的耐热层中，基材层侧区域中每单位体积含有的粘合剂的量比包含耐热层的表面的表面区域中每单位体积含有的粘合剂的量高 。

公开(公告)号：US20200251738A1

公开(公告)日：2020-08-06

申请号：US16749729

申请日：2020-01-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yutaka OYAMA ,  Yuji YOKOYAMA ,  Naoto ONODERA

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/36 ,  H01M10/0565

Abstract: According to the present disclosure, there is provided a technique capable of suitably reducing the battery resistance of a lithium ion secondary battery. In an aspect of a negative electrode disclosed herein, a negative electrode active material layer contains a negative electrode active material, a binder which includes a water-soluble polymer lithium salt, and a sub-material particle including a metal compound which has a hydroxyl group. With this, hopping conduction in which a Li ion moves in such a manner as to slide on hydroxyl groups on the surface of the sub-material particle can occur, and hence it is possible to accelerate supply of the Li ion to the negative electrode active material and achieve a significant reduction in the battery resistance of the lithium secondary battery.

公开(公告)号：US20180159117A1

公开(公告)日：2018-06-07

申请号：US15890248

申请日：2018-02-06

Applicant: SUMITOMO METAL MINING CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Syuhei ODA ,  Hiroyuki TOYA ,  Katsuya KASE ,  Yutaka OYAMA

IPC: H01M4/131 ,  C01G53/00 ,  H01M4/485 ,  H01M4/505 ,  H01M4/139 ,  H01M4/525 ,  H01B1/08

CPC classification number: H01M4/131 ,  C01G53/006 ,  C01G53/42 ,  C01P2004/53 ,  C01P2004/61 ,  C01P2006/40 ,  H01B1/08 ,  H01M4/139 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525

Abstract: A non-aqueous electrolyte secondary battery is provided that has both good safety and durability characteristics while at the same time has high charge/discharge capacity. The cathode active material for a non-aqueous electrolyte secondary battery of the present invention is a lithium nickel composite oxide to which at least two or more kinds of metal elements including aluminum are added, and comprises secondary particles that are composed of fine secondary particles having an average particle size of 2 μm to 4 μm, and rough secondary particles having an average particle size of 6 μm to 15 μm, with an overall average particle size of 5 μm to 15 μm; where the aluminum content of fine secondary particles (metal mole ratio: SA) is greater than the aluminum content of rough secondary particles (metal mole ratio: LA), and preferably the aluminum concentration ratio (SA/LA) is within the range 1.2 to 2.6.

公开(公告)号：US20150108398A1

公开(公告)日：2015-04-23

申请号：US14564261

申请日：2014-12-09

Applicant: SUMITOMO METAL MINING CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Katsuya KASE ,  Syuhei ODA ,  Ryuichi KUZUO ,  Yutaka OYAMA

IPC: H01M4/52 ,  C01G53/00

CPC classification number: H01M4/523 ,  C01G53/42 ,  C01G53/50 ,  C01G53/66 ,  C01P2002/52 ,  C01P2002/70 ,  C01P2002/72 ,  C01P2006/40 ,  H01M4/485 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54

Abstract: Provided is a cathode active material for a non-aqueous electrolyte secondary battery capable of obtaining high initial discharge capacity and good output characteristics at low temperature. In order to achieve this, a cathode active material that is a lithium nickel composite oxide composed of secondary particles that are an aggregate of primary particles is expressed by the general expression: Liw(Ni1-x-yCoxAly)1-zMzO2 (where 0.98≦w≦1.10, 0.05≦x≦0.3, 0.01≦y≦0.1, 0≦z≦0.05, and M is at least one metal element selected from a group consisting of Mg, Fe, Cu, Zn and Ga), and where the crystallite diameter at (003) plane of that lithium nickel composite oxide that is found by X-ray diffraction and the Scherrer equation is within the range of 1200 Å to 1600 Å is used as the cathode material.

Abstract translation: 本发明提供一种能够在低温下获得高的初始放电容量和良好的输出特性的非水电解质二次电池用正极活性物质。 为了实现这一点，由作为一次粒子的集合体的二次粒子构成的锂镍复合氧化物的正极活性物质由以下通式表示：Liw（Ni1-x-yCoxAly）1-zMzO2（其中0.98＆nlE ; w＆nlE; 1.10,0.05＆nlE; x和nlE; 0.3,0.01＆nlE; y＆nlE; 0.1,0＆amp; nlE; z＆nlE; 0.05，M是选自Mg，Fe，Cu，Zn和Ga中的至少一种金属元素） 并且其中通过X射线衍射和Scherrer方程发现的该锂镍复合氧化物的（003）平面处的微晶直径在1200埃至1600埃的范围内被用作阴极材料。