The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 2019
Filed:
Feb. 17, 2012
Dong-hwan Yu, Yongin-si, KR;
Gun-ho Kwak, Yongin-si, KR;
Sung-hoon Kim, Yongin-si, KR;
SAMSUNG SDI CO., LTD., Yongin-si, Gyeonggi-do, KR;
ROBERT BOSCH GmbH, Stuttgart, DE;
Abstract
A positive active material for a rechargeable lithium battery is a secondary particle formed of an assembly of primary particles of a nickel-based compound. The positive active material has an average particle diameter ranging from 5.5 μm to 7.5 μm and a specific surface area ranging from 0.40 m/g to 2.0 m/g. When the positive active material has an average particle diameter ranging from 11 μm to 13 μm, the positive active material has a specific surface area ranging from 0.15 m/g to 1.0 m/g. A rechargeable lithium battery includes the positive active material.