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:
Mar. 21, 2017
Filed:
Jun. 03, 2016
Applicant:
Gs Yuasa International Ltd., Kyoto-shi, Kyoto, JP;
Inventors:
Daisuke Endo, Kyoto, JP;
Hiromasa Muramatsu, Kyoto, JP;
Assignee:
GS YUASA INTERNATIONAL LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/00 (2006.01); H01M 4/131 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/48 (2010.01); C01G 53/00 (2006.01); H01M 10/0525 (2010.01); H01M 10/052 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/131 (2013.01); C01G 53/50 (2013.01); H01M 4/48 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); C01P 2002/76 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01); H01M 10/052 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01); Y02E 60/122 (2013.01); Y02P 70/54 (2015.11); Y02T 10/7011 (2013.01);
Abstract
Provided is a positive active material for a lithium secondary battery includes a lithium transition metal composite oxide having an α-NaFeO-type crystal structure and represented by the composition formula of LiMeO(Me is a transition metal including Co, Ni and Mn and α>0). The positive active material contains Na in an amount of 900 ppm or more and 16000 ppm or less, or K in an amount of 1200 ppm or more and 18000 ppm or less.