公开(公告)号：US20180287155A1

公开(公告)日：2018-10-04

申请号：US15997910

申请日：2018-06-05

申请人： Hydro-Quebec ,  SEI Corporation

发明人： Karim ZAGHIB ,  Abdelbast GUERFI ,  Pierre HOVINGTON ,  Takehiko SAWAI ,  Shinji SAITO ,  Kazunori URAO

IPC分类号： H01M4/58 ,  H01M4/04 ,  H01M4/587 ,  H01M4/36 ,  H01M4/66

摘要： A positive-electrode material for a lithium secondary battery. The material includes a lithium oxide compound or a complex oxide as reactive substance. The material also includes at least one type of carbon material, and optionally a binder. A first type of carbon material is provided as a coating on the reactive substance particles surface. A second type of carbon material is carbon black. And a third type of carbon material is a fibrous carbon material provided as a mixture of at least two types of fibrous carbon material different in fiber diameter and/or fiber length. Also, a method for preparing the material as well as lithium secondary batteries including the material.

公开(公告)号：US20170125813A1

公开(公告)日：2017-05-04

申请号：US15405662

申请日：2017-01-13

申请人： Hydro-Quebec ,  SEI Corporation

发明人： Karim ZAGHIB ,  Abdelbast GUERFI ,  Pierre HOVINGTON ,  Takehiko SAWAI ,  Shinji SAITO ,  Kazunori URAO

IPC分类号： H01M4/58 ,  H01M4/66 ,  H01M4/04 ,  H01M4/62

CPC分类号： H01M4/5825 ,  H01M4/0402 ,  H01M4/0428 ,  H01M4/043 ,  H01M4/0471 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1397 ,  H01M4/366 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/052 ,  H01M2004/028 ,  H01M2220/20 ,  Y02E60/122

摘要： A positive-electrode material for a lithium secondary battery. The material includes a lithium oxide compound or a complex oxide as reactive substance. The material also includes at least one type of carbon material, and optionally a binder. A first type of carbon material is provided as a coating on the reactive substance particles surface. A second type of carbon material is carbon black. And a third type of carbon material is a fibrous carbon material provided as a mixture of at least two types of fibrous carbon material different in fiber diameter and/or fiber length. Also, a method for preparing the material as well as lithium secondary batteries including the material.

公开(公告)号：US20210066718A1

公开(公告)日：2021-03-04

申请号：US17096403

申请日：2020-11-12

申请人： HYDRO-QUÉBEC ,  SEI Corporation

发明人： Karim ZAGHIB ,  Abdelbast GUERFI ,  Pierre HOVINGTON ,  Takehiko SAWAI ,  Shinji SAITO ,  Kazunori URAO

IPC分类号： H01M4/58 ,  H01M4/62 ,  H01M4/136 ,  H01M4/04 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M4/485 ,  H01M4/66

摘要： A positive-electrode material for a lithium secondary battery is provided. The material includes a lithium oxide compound or a complex oxide as reactive substance. The material also includes at least one type of carbon material, and optionally a binder. A first type of carbon material is provided as a coating on the reactive substance particles surface. A second type of carbon material is carbon black. And a third type of carbon material is a fibrous carbon material provided as a mixture of at least two types of fibrous carbon material different in fiber diameter and/or fiber length. Also, a method for preparing the material as well as lithium secondary batteries including the material is provided.

公开(公告)号：US20170214098A1

公开(公告)日：2017-07-27

申请号：US15346476

申请日：2015-07-07

申请人： SEI Corporation

发明人： Takehiko SAWAI ,  Shinji SAITO ,  Kazunori URAO

IPC分类号： H01M10/42 ,  H01M10/0568 ,  H01M2/16 ,  H01M4/587 ,  H01M10/0569 ,  H01M10/0587 ,  H01M10/0525 ,  H01M4/58

CPC分类号： H01M10/4235 ,  H01M2/16 ,  H01M2/1626 ,  H01M4/13 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/58 ,  H01M4/5825 ,  H01M4/583 ,  H01M4/587 ,  H01M4/62 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0585 ,  H01M10/0587 ,  H01M2004/021 ,  H01M2220/20 ,  H01M2300/004 ,  Y02E60/122 ,  Y02T10/7011

摘要： The present invention provides a lithium secondary battery for an ISS which can be discharged at not less than 20 ItA when temperature is −30 degrees centigrade and can be charged at not less than 50 ItA. The positive electrode material consists of a mixture of lithium-containing metal phosphate compound particles whose surfaces are coated with an amorphous carbon material and a conductive carbon material, in which atoms of the surface carbon materials are chemically bonded to one another. The negative electrode material contains at least one kind of particles selected from among graphite particles whose surfaces are coated with an amorphous carbon material, having a specific surface area of not less than 6 m2/g and soft carbon particles. A mixed electrolyte contains lithium hexafluorophosphate and lithium bis fluorosulfonyl imide.

公开(公告)号：US20170084920A1

公开(公告)日：2017-03-23

申请号：US15365474

申请日：2016-11-30

申请人： SEI Corporation

发明人： Takehiko SAWAI ,  Shinji SAITO ,  Kazunori URAO ,  Jun NAKAGAWA ,  Kazuma HANAI

IPC分类号： H01M4/525 ,  H01G11/46 ,  H01G11/86 ,  H01G11/42 ,  H01G11/40 ,  H01M10/0568 ,  H01M10/0525 ,  H01M4/62 ,  H01M10/0587 ,  H01M4/505 ,  H01M4/587 ,  H01M10/0569 ,  H01G11/36 ,  H01G11/06

CPC分类号： H01M4/525 ,  H01G11/06 ,  H01G11/36 ,  H01G11/40 ,  H01G11/42 ,  H01G11/46 ,  H01G11/86 ,  H01M4/36 ,  H01M4/48 ,  H01M4/505 ,  H01M4/58 ,  H01M4/5825 ,  H01M4/587 ,  H01M4/62 ,  H01M4/623 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0585 ,  H01M10/0587 ,  H01M2220/20 ,  H01M2300/004 ,  Y02E60/122 ,  Y02P70/54

摘要： The present invention provides an electrode material, for a lithium battery, which is capable of achieving a high-energy density and a high output and continuing its properties for many years, a method of producing the electrode material, and the lithium battery. The electrode material for use in positive and negative electrodes of a lithium battery is formed as a complex by combining a carbon-based conductive material and an electrode active material with each other. The carbon-based conductive material of the electrode material is subjected to hydrophilic treatment by using a gas containing fluorine gas. The electrode material is formed as the complex by calcining a mixture of the carbon-based conductive material subjected to the hydrophilic treatment and the electrode active material in the presence of fluororesin.

公开(公告)号：US20210280922A1

公开(公告)日：2021-09-09

申请号：US17324049

申请日：2021-05-18

申请人： SEI Corporation

发明人： Takehiko SAWAI ,  Shinji SAITO ,  Kazunori URAO

IPC分类号： H01M10/42 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0587 ,  H01M4/36 ,  H01M4/13 ,  H01M4/70 ,  H01M4/58 ,  H01M10/0585 ,  H01M4/1397 ,  H01M4/136 ,  H01M4/583 ,  H01M4/62 ,  H01M50/44 ,  H01M50/409 ,  H01M50/429 ,  H01M4/587

摘要： The present invention provides a lithium secondary battery for an ISS which can be discharged at not less than 20 ItA when temperature is −30 degrees centigrade and can be charged at not less than 50 ItA. The positive electrode material consists of a mixture of lithium-containing metal phosphate compound particles whose surfaces are coated with an amorphous carbon material and a conductive carbon material, in which atoms of the surface carbon materials are chemically bonded to one another. The negative electrode material contains at least one kind of particles selected from among graphite particles whose surfaces are coated with an amorphous carbon material, having a specific surface area of not less than 6 m2/g and soft carbon particles. A mixed electrolyte contains lithium hexafluorophosphate and lithium bis fluorosulfonyl imide.

公开(公告)号：US20170324089A9

公开(公告)日：2017-11-09

申请号：US15365474

申请日：2016-11-30

申请人： SEI Corporation

发明人： Takehiko SAWAI ,  Shinji SAITO ,  Kazunori URAO ,  Jun NAKAGAWA ,  Kazuma HANAI

IPC分类号： H01M4/525 ,  H01G11/06 ,  H01G11/36 ,  H01G11/40 ,  H01M10/0587 ,  H01M10/0585 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0566 ,  H01M10/0525 ,  H01M10/052 ,  H01M4/62 ,  H01M4/587 ,  H01M4/58 ,  H01M4/505 ,  H01M4/48 ,  H01M4/36 ,  H01G11/86 ,  H01G11/46 ,  H01G11/42

CPC分类号： H01M4/525 ,  H01G11/06 ,  H01G11/36 ,  H01G11/40 ,  H01G11/42 ,  H01G11/46 ,  H01G11/86 ,  H01M4/36 ,  H01M4/48 ,  H01M4/505 ,  H01M4/58 ,  H01M4/5825 ,  H01M4/587 ,  H01M4/62 ,  H01M4/623 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0585 ,  H01M10/0587 ,  H01M2220/20 ,  H01M2300/004 ,  Y02E60/122 ,  Y02P70/54

摘要： The present invention provides an electrode material, for a lithium battery, which is capable of achieving a high-energy density and a high output and continuing its properties for many years, a method of producing the electrode material, and the lithium battery. The electrode material for use in positive and negative electrodes of a lithium battery is formed as a complex by combining a carbon-based conductive material and an electrode active material with each other. The carbon-based conductive material of the electrode material is subjected to hydrophilic treatment by using a gas containing fluorine gas. The electrode material is formed as the complex by calcining a mixture of the carbon-based conductive material subjected to the hydrophilic treatment and the electrode active material in the presence of fluororesin.

公开(公告)号：US20170025704A1

公开(公告)日：2017-01-26

申请号：US15286433

申请日：2016-10-05

申请人： SEI Corporation

发明人： Takehiko SAWAI ,  Shinji SAITO ,  Kazunori URAO

IPC分类号： H01M10/058 ,  H01M4/66 ,  H01M4/70 ,  H01M10/0525

CPC分类号： H01M10/058 ,  H01M4/0404 ,  H01M4/139 ,  H01M4/661 ,  H01M4/70 ,  H01M4/74 ,  H01M4/742 ,  H01M10/0431 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/0585 ,  H01M10/0587 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T29/302

摘要： The present invention provides a method for producing a lithium secondary battery in which peeling of an active substance can be prevented and the generation of metal powder can be prevented when a power collection foil is processed at an electrode production step. The method for producing the lithium secondary battery includes an electrode-producing step of producing a positive electrode and a negative electrode; a step of forming a group of electrodes by layering the positive electrode and the negative electrode on each other through a separator, or winding the positive electrode and the negative electrode through a separator; and a step of immersing the group of the electrodes in an electrolyte. The electrode-producing step has a boring step of forming a plurality of through-holes penetrating a power collection foil and having projected parts projected from at least a rear surface of the power collection foil.

摘要翻译： 本发明提供了一种锂二次电池的制造方法，其中可以防止活性物质的剥离，并且在电极制备步骤处理电力收集箔时可以防止金属粉末的产生。 锂二次电池的制造方法包括：制造正极和负极的电极制造工序; 通过隔板将正极和负极层叠形成一组电极的步骤，或者通过隔板卷绕正极和负极; 以及将电极组浸入电解质中的步骤。 电极制造工序具有形成穿过集电箔的多个贯通孔并具有从集电箔的至少后表面突出的突出部的钻孔工序。