- Patent Title: Cathode active material precursor, cathode active material formed therefrom, method of preparing the cathode active material, and cathode and lithium battery each including the cathode active material
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Application No.: US16119170Application Date: 2018-08-31
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Publication No.: US10741840B2Publication Date: 2020-08-11
- Inventor: Dongjin Ham , Jayhyok Song , Andrei Kapylou , Jinhwan Park , Youhwan Son , San Moon , Sungjin Ahn , Donghee Yeon , Jinsu Ha , Kwangjin Park , Byungjin Choi
- 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: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@1af4d7d5 com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@1e2ff8f7
- Main IPC: H01M4/13
- IPC: H01M4/13 ; H01M4/525 ; H01M10/052 ; H01M4/131 ; H01M4/36 ; H01M4/505 ; H01M10/0525 ; H01M4/02

Abstract:
A cathode active material includes a secondary particle including an aggregate of a plurality of primary particles, wherein the secondary particle includes a nickel-containing lithium transition metal oxide having a layered crystal structure, wherein the plurality of primary particles includes a first primary particle having a size greater than about 400 nanometers, a second primary particle having a size less than about 150 nanometers, and a third primary particle having a size of about 150 nanometers to about 400 nanometers, wherein the third primary particle has a area of greater than or equal to about 80% of a total area of the plurality of primary particles, and wherein the secondary particle has a porosity of less than or equal to about 10% of a total area of the cathode active material.
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