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:
Jun. 24, 2014
Filed:
Jan. 29, 2010
Applicants:
Hiroaki Konishi, Hitachi, JP;
Toyotaka Yuasa, Hitachi, JP;
Inventors:
Hiroaki Konishi, Hitachi, JP;
Toyotaka Yuasa, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/13 (2010.01); H01M 4/525 (2010.01); H01M 4/131 (2010.01); H01M 4/36 (2006.01); H01M 4/52 (2010.01); H01M 10/052 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/525 (2013.01); H01M 4/131 (2013.01); H01M 4/364 (2013.01); H01M 4/52 (2013.01); H01M 10/052 (2013.01); H01M 2004/028 (2013.01); H01M 2004/027 (2013.01);
Abstract
This invention provides a positive electrode material having high capacity and safety, and a lithium ion secondary battery using the positive electrode material, the lithium ion secondary battery using a positive electrode active substance comprising a first transition metal oxide represented by the compositional formula: LiNiMnCoMO; a second transition metal oxide represented by the compositional formula: LiNiMnCoMO; and a third transition metal oxide represented by the compositional formula: LiNiMnCoMO; in which a3<a2<a1.