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:
Jan. 24, 2017
Filed:
Apr. 19, 2011
Applicants:
Mitsuru Sakano, Toyota, JP;
Hisao Yamashige, Toyota, JP;
Inventors:
Mitsuru Sakano, Toyota, JP;
Hisao Yamashige, Toyota, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/485 (2010.01); H01M 4/62 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); H01M 4/485 (2013.01); H01M 4/626 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 2220/20 (2013.01); Y02E 60/122 (2013.01);
Abstract
The present invention provides a lithium secondary battery having reduced internal resistance. The lithium secondary battery comprises a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode comprises, as a positive electrode active material, a lithium transition metal composite oxide having a layered structure. In a surface regionA of a positive electrode active material particle, at least one species among elements belonging to groups 3 to 7 of the periodic table is supplemented by ion implantation.