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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.:

US 9825294 B1

PDFFull Text
Date of Patent:
Nov. 21, 2017

Filed:

Sep. 08, 2011

Positive electrode active material for lithium secondary battery and method for preparing the same

Applicants:

Sung Woo OH, Daejeon, KR;

Hee Young Sun, Yongin-si, KR;

Yu Rim DO, Seoul, KR;

Hyung Bok Lee, Seoul, KR;

Inventors:

Sung Woo Oh, Daejeon, KR;

Hee Young Sun, Yongin-si, KR;

Yu Rim Do, Seoul, KR;

Hyung Bok Lee, Seoul, KR;

Assignee:

SK Innovation Co., Ltd., Seoul, KR;

Attorney:

The Webb Law Firm

Primary Examiner:

Milton I Cano

Assistant Examiner:

Jennifer A Moss

Int. Cl.
CPC ...
H01M 4/525 (2010.01); C01G 53/10 (2006.01); C01G 53/00 (2006.01); H01M 4/62 (2006.01); H01M 4/1391 (2010.01); C01G 51/00 (2006.01); H01M 4/26 (2006.01); H01M 4/52 (2010.01); C01D 15/02 (2006.01); H01M 4/02 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/525 (2013.01); C01G 53/10 (2013.01); C01G 53/40 (2013.01); H01M 4/625 (2013.01); C01D 15/02 (2013.01); C01G 51/40 (2013.01); C01G 51/42 (2013.01); C01P 2006/10 (2013.01); C01P 2006/11 (2013.01); C01P 2006/12 (2013.01); C01P 2006/40 (2013.01); H01M 4/1391 (2013.01); H01M 4/26 (2013.01); H01M 4/52 (2013.01); H01M 10/052 (2013.01); H01M 2004/028 (2013.01);
Abstract

Provided is a method for preparing a positive electrode active material for a lithium secondary battery, the method comprising: mixing and reacting a nickel source, a cobalt source, and an aluminum source, ammonia water, sucrose, and a pH adjusting agent to prepare a mixed solution; drying and oxidizing the mixed solution to prepare a positive electrode active material precursor; and adding a lithium source to the positive electrode active material precursor and firing them to prepare a positive electrode active material for a lithium secondary battery.

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