- 专利标题: COMPOSITE CATHODE ACTIVE MATERIAL, CATHODE AND LITHIUM BATTERY INCLUDING THE COMPOSITE CATHODE ACTIVE MATERIAL, AND METHOD OF PREPARING THE COMPOSITE CATHODE ACTIVE MATERIAL
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申请号: US15181838申请日: 2016-06-14
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公开(公告)号: US20170194637A1公开(公告)日: 2017-07-06
- 发明人: Sungjin Ahn , Byongyong Yu , Jayhyok Song , Andrei KAPYLOU , Jinhwan Park
- 申请人: Samsung Electronics Co., Ltd. , Samsung SDI Co., Ltd.
- 优先权: KR10-2015-0191026 20151231
- 主分类号: H01M4/36
- IPC分类号: H01M4/36 ; H01M4/525 ; H01M4/505 ; H01M10/0525
摘要:
A composite cathode active material includes: a first metal oxide including a plurality of layered crystalline phases comprising a first layered crystalline phase and a second layered crystalline phase, wherein the first and second layered crystalline phases have a different compositions than each other, and a second metal oxide different from the first metal oxide and including a composite crystalline phase, that is different from the first metal oxide, wherein the second metal oxide is represented by Formula 1, wherein at least a portion of the second metal oxide is disposed on a first layered crystalline phase of the plurality of layered crystalline phases of the first metal oxide, and wherein the first layer crystalline phase is in a space group of R-3m: LixMyOz Formula 1 wherein, in Formula 1, 0≦x≦3, 1≦y≦3, and 2≦z≦8, and M is at least one selected from a Group 4 element to a Group 13 element.