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1. 发明申请

US20210151758A1 POSITIVE ELECTRODE ACTIVE MATERIAL OF POWER STORAGE DEVICE, POWER STORAGE DEVICE, ELECTRICALLY PROPELLED VEHICLE, AND METHOD FOR MANUFACTURING POWER STORAGE 有权
公开(公告)号：US20210151758A1
公开(公告)日：2021-05-20
申请号：US17160735
申请日：2021-01-28
申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
发明人： Takahiro KAWAKAMI , Masaki YAMAKAJI
IPC分类号： H01M4/58 , B82Y30/00 , H01M4/136 , H01M4/1397 , H01M10/0525 , B60L50/64 , H01M10/04
摘要： An object is to improve the characteristics of a power storage device such as a charging and discharging rate or a charge and discharge capacity. The grain size of particles of a positive electrode active material is nano-sized so that a surface area per unit mass of the active material is increased. Specifically, the grain size is set to greater than or equal to 10 nm and less than or equal to 100 nm, preferably greater than or equal to 20 nm and less than or equal to 60 nm. Alternatively, the surface area per unit mass is set to 10 m2/g or more, preferably 20 m2/g or more, further, the crystallinity of the active material is increased by setting an XRD half width to greater than or equal to 0.12° and less than 0.17°, preferably greater than or equal to 0.13° and less than 0.16°.

2. 发明申请

US20200259183A1 STORAGE BATTERY ELECTRODE, MANUFACTURING METHOD THEREOF, STORAGE BATTERY, AND ELECTRONIC DEVICE 审中-公开
公开(公告)号：US20200259183A1
公开(公告)日：2020-08-13
申请号：US16861306
申请日：2020-04-29
申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
发明人： Tatsuya IKENUMA , Takahiro KAWAKAMI , Yohei MOMMA , Teruaki OCHIAI
IPC分类号： H01M4/62 , H01M10/052 , H01M4/139 , H01M4/04
摘要： 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.

3. 发明申请

US20190229340A1 ELECTRODE, POWER STORAGE DEVICE, ELECTRONIC DEVICE, AND MANUFACTURING METHOD OF ELECTRODE 审中-公开
公开(公告)号：US20190229340A1
公开(公告)日：2019-07-25
申请号：US16374785
申请日：2019-04-04
申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
发明人： Teruaki OCHIAI , Takahiro KAWAKAMI
IPC分类号： H01M4/62 , H01G11/46 , H01M4/36 , H01G11/50 , H01G11/30 , H01M4/505
摘要： A power storage device with excellent charge and discharge characteristics. A power storage device in which a decrease in capacity in charge and discharge cycles is inhibited. An electrode which includes a current collector and an active material layer and in which the active material layer includes an active material and a binder and the binder includes polybenzoxazine. An electrode that includes polybenzoxazine and another material as a binder. A basic material may be used as the active material. The electrode may be formed under high temperatures.

4. 发明申请

US20180175386A1 LITHIUM-ION SECONDARY BATTERY AND ELECTRONIC DEVICE 审中-公开
公开(公告)号：US20180175386A1
公开(公告)日：2018-06-21
申请号：US15874123
申请日：2018-01-18
申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
发明人： Takahiro KAWAKAMI , Tatsuya IKENUMA , Teruaki OCHIAI , Shuhei YOSHITOMI , Mako MOTOYOSHI , Hiroyuki MIYAKE , Yohei MOMMA , Takuya HIROHASHI , Satoshi SEO
IPC分类号： H01M4/485 , H01M4/48 , G06F1/16 , H01M4/62 , H01M4/583 , H01M4/505 , G04G21/00 , H01M4/525 , H01M4/36 , H01M10/052
CPC分类号： 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
摘要： 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.

5. 发明申请

US20180102536A1 POSITIVE ELECTRODE ACTIVE MATERIAL PARTICLE AND MANUFACTURING METHOD OF POSITIVE ELECTRODE ACTIVE MATERIAL PARTICLE 审中-公开
公开(公告)号：US20180102536A1
公开(公告)日：2018-04-12
申请号：US15726520
申请日：2017-10-06
申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
发明人： Takahiro KAWAKAMI , Teruaki OCHIAI , Yohei MOMMA , Ayae TSURUTA , Masahiro TAKAHASHI , Mayumi MIKAMI
IPC分类号： H01M4/36 , H01M4/525 , H01M10/0525 , H01M4/505 , H01M4/62 , H01G11/60 , H01G11/50
CPC分类号： H01M4/366 , H01G11/24 , H01G11/50 , H01G11/60 , H01G11/86 , H01M4/0471 , H01M4/505 , H01M4/525 , H01M4/62 , H01M4/628 , H01M10/0525 , H01M2004/028
摘要： Provided is a positive electrode active material which suppresses a reduction in capacity due to charge and discharge cycles when used in a lithium ion secondary battery. A covering layer is formed by segregation on a superficial portion of the positive electrode active material. The positive electrode active material includes a first region and a second region. The first region exists in an inner portion of the positive electrode active material. The second region exists in a superficial portion of the positive electrode active material and part of the inner portion thereof. The first region includes lithium, a transition metal, and oxygen. The second region includes magnesium, fluorine, and oxygen.

6. 发明申请

US20160218367A1 POSITIVE ELECTRODE ACTIVE MATERIAL OF POWER STORAGE DEVICE, POWER STORAGE DEVICE, ELECTRICALLY PROPELLED VEHICLE, AND METHOD FOR MANUFACTURING POWER STORAGE DEVICE 审中-公开
标题翻译：蓄电装置的蓄电极活性物质，电力储存装置，电动车辆及制造蓄电装置的方法
公开(公告)号：US20160218367A1
公开(公告)日：2016-07-28
申请号：US15091770
申请日：2016-04-06
申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
发明人： Takahiro KAWAKAMI , Masaki YAMAKAJI
IPC分类号： H01M4/58 , H01M10/04 , B60L11/18 , H01M4/136 , H01M10/0525
CPC分类号： H01M4/5825 , B60L11/18 , B82Y30/00 , H01M4/136 , H01M4/1397 , H01M10/0436 , H01M10/0525 , H01M2004/021 , H01M2004/028 , H01M2220/20 , Y02E60/122 , Y02P70/54 , Y02T10/7011
摘要： An object is to improve the characteristics of a power storage device such as a charging and discharging rate or a charge and discharge capacity. The grain size of particles of a positive electrode active material is nano-sized so that a surface area per unit mass of the active material is increased. Specifically, the grain size is set to greater than or equal to 10 nm and less than or equal to 100 nm, preferably greater than or equal to 20 nm and less than or equal to 60 nm. Alternatively, the surface area per unit mass is set to 10 m2/g or more, preferably 20 m2/g or more. Further, the crystallinity of the active material is increased by setting an XRD half width to greater than or equal to 0.12° and less than 0.17°, preferably greater than or equal to 0.13° and less than 0.16°.
摘要翻译：目的在于提高蓄电装置的特性，例如充放电率或充放电容量。正极活性物质的粒子的粒径为纳米尺寸，使得每单位质量的活性物质的表面积增加。具体地，将晶粒尺寸设定为大于或等于10nm且小于或等于100nm，优选大于或等于20nm且小于或等于60nm。或者，每单位质量的表面积设定为10m 2 / g以上，优选为20m 2 / g以上。此外，通过将XRD半值宽度设定为大于或等于0.12°并小于0.17°，优选大于或等于0.13°且小于0.16°，来提高活性材料的结晶度。

7. 发明申请

US20160190578A1 Storage battery 审中-公开
标题翻译：蓄电池
公开(公告)号：US20160190578A1
公开(公告)日：2016-06-30
申请号：US14757444
申请日：2015-12-23
申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
发明人： Junpei MOMO , Takahiro KAWAKAMI , Yohei MOMMA
IPC分类号： H01M4/505 , H01M10/0525
CPC分类号： H01M4/505 , C01G45/1228 , C01G53/56 , C01P2002/32 , H01M4/131 , H01M4/364 , H01M10/0525 , Y02E60/122
摘要： An object is to provide a storage battery using materials for an electrode active material without waste. Another object is to provide an electrode active material with an appropriate compounding ratio. A lithium-ion storage battery includes a positive electrode, a negative electrode, and an electrolytic solution therebetween. The positive electrode includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer includes a first positive electrode active material and a second positive electrode active material. The charge capacity of the first positive electrode active material is higher than the discharge capacity thereof. The discharge capacity of the second positive electrode active material is higher than the charge capacity thereof. The first positive electrode active material may be a lithium-manganese composite oxide, and the second positive electrode active material may be a lithium-manganese oxide with a spinel crystal structure.
摘要翻译：本发明的目的是提供一种使用不含废物的电极活性材料的材料的蓄电池。另一个目的是提供一种具有合适配合比例的电极活性材料。锂离子蓄电池包括正极，负极和它们之间的电解液。正极包括正极集电体和正极活性物质层。正极活性物质层包括第一正极活性物质和第二正极活性物质。第一正极活性物质的充电容量高于其放电容量。第二正极活性物质的放电容量高于其充电容量。第一正极活性物质可以是锂锰复合氧化物，第二正极活性物质可以是具有尖晶石晶体结构的锂锰氧化物。

8. 发明申请

US20160164089A1 LITHIUM-MANGANESE COMPOSITE OXIDE, SECONDARY BATTERY, AND ELECTRIC DEVICE 审中-公开
公开(公告)号：US20160164089A1
公开(公告)日：2016-06-09
申请号：US15040051
申请日：2016-02-10
申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
发明人： Takahiro KAWAKAMI , Shuhei YOSHITOMI , Teruaki OCHIAI , Yumiko SAITO , Yohei MOMMA , Satoshi SEO , Mayumi MIKAMI , Shunsuke ADACHI
IPC分类号： H01M4/505 , H01M4/525 , H01M10/0525
CPC分类号： H01M4/505 , H01B1/08 , H01M4/362 , H01M4/525 , H01M10/052 , H01M10/0525 , H01M2004/028 , H01M2220/20 , H01M2220/30 , Y02E60/122
摘要： The amount of lithium ions that can be received and released in and from a positive electrode active material is increased, and high capacity and high energy density of a secondary battery are achieved. Provided is a lithium-manganese composite oxide represented by LixMnyMzOw, where M is a metal element other than Li and Mn, or Si or P, and y, z, and w satisfy 0≦x/(y+z) 0, z>0, 0.26≦(y+z)/w

9. 发明申请

US20160118666A1 STORAGE BATTERY ELECTRODE, MANUFACTURING METHOD THEREOF, STORAGE BATTERY, AND ELECTRONIC DEVICE 审中-公开
标题翻译：存储电池电极，其制造方法，储存电池和电子设备
公开(公告)号：US20160118666A1
公开(公告)日：2016-04-28
申请号：US14885583
申请日：2015-10-16
申请人： Semiconductor Energy Laboratory Co., LTD.
发明人： Tatsuya IKENUMA , Takahiro KAWAKAMI , Yohei MOMMA , Teruaki OCHIAI
IPC分类号： H01M4/62 , H01M4/04 , H01M10/0525
CPC分类号： H01M4/625 , H01M4/0404 , H01M4/139 , H01M4/621 , H01M4/623 , H01M10/052 , H01M2220/30 , Y02E60/122 , Y02P70/54
摘要： 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.
摘要翻译：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。

10. 发明申请

US20160118658A1 PARTICLE, ELECTRODE, POWER STORAGE DEVICE, ELECTRONIC DEVICE, AND METHOD FOR MANUFACTURING ELECTRODE 审中-公开
标题翻译：电极，电极，电力储存装置，电子装置及制造电极的方法
公开(公告)号：US20160118658A1
公开(公告)日：2016-04-28
申请号：US14920650
申请日：2015-10-22
申请人： Semiconductor Energy Laboratory Co., LTD.
发明人： Takahiro KAWAKAMI , Teruaki OCHIAI , Shuhei YOSHITOMI , Takuya HIROHASHI , Mako MOTOYOSHI , Yohei MOMMA , Junya GOTO
IPC分类号： H01M4/505 , H01M4/36
CPC分类号： H01M4/505 , H01M4/131 , H01M4/1391 , H01M4/366 , H01M2220/30
摘要： To increase capacity per weight of a power storage device, a particle includes a first region, a second region in contact with at least part of a surface of the first region and located on the outside of the first region, and a third region in contact with at least part of a surface of the second region and located on the outside of the second region. The first and the second regions contain lithium and oxygen. At least one of the first region and the second region contains manganese. At least one of the first and the second regions contains an element M. The first region contains a first crystal having a layered rock-salt structure. The second region contains a second crystal having a layered rock-salt structure. An orientation of the first crystal is different from an orientation of the second crystal.
摘要翻译：为了增加蓄电装置的重量，颗粒包括第一区域，与第一区域的表面的至少一部分接触并位于第一区域的外部的第二区域和接触的第三区域具有第二区域的表面的至少一部分并且位于第二区域的外侧。第一和第二区域包含锂和氧。第一区域和第二区域中的至少一个含有锰。第一区域和第二区域中的至少一个包含元素M.第一区域包含具有层状岩盐结构的第一晶体。第二区域包含具有层状岩盐结构的第二晶体。第一晶体的取向与第二晶体的取向不同。

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