logo

For the Inventor, By the Inventor

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 10439216 B1

PDFFull Text
Date of Patent:
Oct. 08, 2019

Filed:

Nov. 30, 2016

Positive electrode active material for secondary battery, and secondary battery including the same

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Ju Kyung Shin, Daejeon, KR;

Wang Mo Jung, Daejeon, KR;

Byung Chun Park, Daejeon, KR;

Ji Hoon Ryu, Daejeon, KR;

Sang Min Park, Daejeon, KR;

Sang Wook Lee, Daejeon, KR;

Assignee:

LG Chem, Ltd., , KR;

Attorney:

Lerner, David, Littenberg, Krumholz & Mentlik, LLP

Primary Examiner:

Raymond Alejandro

Int. Cl.
CPC ...
H01M 4/00 (2006.01); H01M 4/36 (2006.01); H01M 4/525 (2010.01); H01M 4/485 (2010.01); H01M 4/58 (2010.01); H01M 10/0525 (2010.01); C01G 41/00 (2006.01); C01G 39/00 (2006.01); C01G 37/00 (2006.01); C01G 53/00 (2006.01); H01M 4/131 (2010.01); H01M 4/505 (2010.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); C01G 37/006 (2013.01); C01G 39/006 (2013.01); C01G 41/006 (2013.01); C01G 53/006 (2013.01); C01G 53/50 (2013.01); H01M 4/131 (2013.01); H01M 4/485 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/582 (2013.01); H01M 4/5825 (2013.01); H01M 4/62 (2013.01); H01M 10/0525 (2013.01); C01P 2004/50 (2013.01); C01P 2004/84 (2013.01); C01P 2004/86 (2013.01); C01P 2006/40 (2013.01); H01M 10/052 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01);
Abstract

The present invention provides a positive electrode active material for secondary battery and a secondary battery including the same. The positive electrode active material includes a core including a lithium composite metal oxide of Formula 1 below, a first surface-treated layer positioned on the surface of the core and including a lithium oxide of Formula 2 below, and a second surface treated layer positioned on the core or the first surface-treated layer and including a lithium compound of Formula 3. Thus, the present invention can improve capacity characteristics and output characteristics of a battery and also reduce the generation of gas,LiNiCoM1M3M2O  [Formula 1]LiM4O  [Formula 2]LiM5A  [Formula 3] (in formulae 1 to 3, A, M1 to M5, a, x, y, z, w, m, n, p, and q are the same as those defined in the specification).

Find Patent Forward Citations

Loading…