Invention Grant
- Patent Title: Positive active material, positive electrode, and lithium battery containing the positive active material
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Application No.: US15367443Application Date: 2016-12-02
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Publication No.: US10236508B2Publication Date: 2019-03-19
- Inventor: Sungjin Ahn , Jinhwan Park , Jayhyok Song , Andrei Kapylou , 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: KR10-2015-0191324 20151231
- Main IPC: H01M4/505
- IPC: H01M4/505 ; H01M4/525 ; H01M4/02
Abstract:
A positive active material includes an overlithiated lithium transition metal oxide including: a metal cation and a Li2MO3 phase, wherein M is at least one metal selected from a Period 4 transition metal having an average oxidation number of +4 and a Period 5 transition metal having an average oxidation number of +4, and wherein an amount of the Li2MO3 phase is less than or equal to about 20 mole percent, based on 1 mole of the overlithiated lithium transition metal oxide.
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