公开(公告)号：US20160204424A1

公开(公告)日：2016-07-14

申请号：US14913234

申请日：2014-08-21

申请人： HYDRO-QUÉBEC ,  SEI CORP.

发明人： Takehiko SAWAI ,  Shinji SAITO ,  Kazunori URAO ,  Kazuma HANAI ,  Karim ZAGHIB ,  Abdelbast GUERFI ,  Martin DONTIGNY

IPC分类号： H01M4/36 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/525 ,  H01M4/505 ,  H01M4/58 ,  H01M4/62 ,  H01M4/66 ,  H01M4/04 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/0568 ,  H01M4/587 ,  H01M4/131

CPC分类号： H01M4/5825 ,  B60L50/64 ,  C01B25/45 ,  C01P2004/61 ,  C01P2004/80 ,  H01M4/0402 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M4/62 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028 ,  H01M2220/10 ,  H01M2220/20 ,  Y02T10/7011 ,  Y02T10/705

摘要： A positive electrode material is used to produce a positive electrode of a lithium secondary battery, the positive electrode material being a composite lithium material that includes a first lithium compound and a second lithium compound. For instance, the first lithium compound is in the form of particles and comprises at least one compound selected from a layered lithium compound and a spinel-type lithium compound. Preferably, the second lithium compound comprises at least one compound selected from a lithium-containing phosphate compound and a lithium-containing silicate compound. An amorphous carbon material layer and/or graphene-structured carbon material layer is present on the entire surface of the first lithium compound and the second lithium compound. The second lithium compound forms a thin-film layer on part or the entirety of the carbon material layer present on the surface of the first lithium compound particles.

摘要翻译： 使用正极材料来制造锂二次电池的正极，正极材料是包含第一锂化合物和第二锂化合物的复合锂材料。 例如，第一锂化合物为颗粒形式，并且包含至少一种选自层状锂化合物和尖晶石型锂化合物的化合物。 优选地，第二锂化合物包含至少一种选自含锂磷酸盐化合物和含锂硅酸盐化合物的化合物。 在第一锂化合物和第二锂化合物的整个表面上存在无定形碳材料层和/或石墨烯结构的碳材料层。 第二锂化合物在第一锂化合物颗粒表面上存在的部分或全部碳材料层上形成薄膜层。

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.