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:
Aug. 05, 2025
Filed:
Jun. 19, 2019
Applicant:
Gs Yuasa International Ltd., Kyoto, JP;
Inventors:
Assignee:
GS Yuasa International Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/131 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 10/058 (2010.01); H01M 10/44 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/131 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/058 (2013.01); H01M 10/44 (2013.01); H01M 2004/028 (2013.01);
Abstract
A positive active material for a nonaqueous electrolyte secondary battery, containing a lithium-transition metal composite oxide, in which the lithium-transition metal composite oxide has an α-NaFeOstructure, with the molar ratio Li/Me of Li to the transition metal (Me) being 1.05≤Li/Me<1.4, and contains Ni and Mn, or contains Ni, Co, and Mn as the transition metal (Me), with the molar ratio Mn/Me of Mn to Me being 0.4≤Mn/Me<0.6, and the molar ratio Ni/Me of Ni to Me being 0.2≤Ni/Me≤0.6.