- Patent Title: Composite positive active material, method of preparing the same, positive electrode including the composite positive active material, and lithium battery including the positive electrode
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Application No.: US15161759Application Date: 2016-05-23
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Publication No.: US10290861B2Publication Date: 2019-05-14
- Inventor: Byungjin Choi , Andrei Kapylou , Donghan Kim , Jinhwan Park , Jayhyok Song , Sungjin Ahn , Donghee Yeon , Byongyong Yu
- Applicant: Samsung Electronics Co., Ltd. , Samsung SDI Co., Ltd.
- Applicant Address: KR Gyeonggi-Do KR Gyeonggi-Do
- Assignee: SAMSUNG ELECTRONICS CO., LTD.,SAMSUNG SDI CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.,SAMSUNG SDI CO., LTD.
- Current Assignee Address: KR Gyeonggi-Do KR Gyeonggi-Do
- Agency: Cantor Colburn LLP
- Priority: KR10-2015-0181856 20151218
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M4/00 ; H01M4/04 ; H01M4/505 ; H01M4/525 ; H01M4/62 ; H01M10/0525 ; H01M4/02

Abstract:
A composite positive active material includes: a composite including a first metal oxide represented by Formula 1 and having a layered structure, and a second metal oxide having at least one crystal structure selected from a layer structure, a perovskite structure, a rock salt structure, and a spinel structure, wherein a content of the second metal oxide is greater than 0 and equal to or less than 0.2 moles, per mole of the composite, LiNixM11-xO2-eM2e Formula 1 wherein, in Formula 1, M1 is at least one element selected from Group 4 to Group 14 of the Periodic Table of the Elements; Ma is at least one element selected from F, S, Cl, and Br; 0.7≤x
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