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:
Jul. 07, 2015
Filed:
Mar. 16, 2007
Applicants:
Fusaji Kita, Ibaraki, JP;
Hideki Tsubata, Ibaraki, JP;
Hiroyasu Inoue, Ibaraki, JP;
Inventors:
Assignee:
HITACHI MAXELL, LTD., Ibaraki-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/52 (2010.01); H01M 4/36 (2006.01); H01M 6/16 (2006.01); H01M 10/0567 (2010.01); H01M 4/131 (2010.01); H01M 4/485 (2010.01); H01M 10/0569 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/52 (2013.01); H01M 4/364 (2013.01); H01M 6/164 (2013.01); H01M 6/168 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0034 (2013.01); H01M 10/0567 (2013.01); H01M 4/02 (2013.01); H01M 4/131 (2013.01); H01M 4/485 (2013.01); H01M 10/0569 (2013.01); H01M 2004/021 (2013.01); Y02E 60/122 (2013.01);
Abstract
A nonaqueous secondary battery containing a positive electrode having a positive electrode mixture layer, a negative electrode, and a nonaqueous electrolyte, wherein the positive electrode comprises, as active materials, two or more lithium-containing transition metal oxides having different average particle sizes, and the lithium-containing transition metal oxide having the smallest average particle size contains one or more of Mg, Ti, Zr, Ge, Nb, Al and Sn.