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. 28, 2018
Filed:
Mar. 18, 2013
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Atsushi Sano, Tokyo, JP;
Keitaro Otsuki, Tokyo, JP;
Masahiro Oishi, Tokyo, JP;
Keiichi Fukuda, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 10/05 (2010.01); H01M 10/0567 (2010.01); H01M 10/0563 (2010.01); H01M 4/58 (2010.01); H01M 10/0525 (2010.01); H01M 10/42 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0567 (2013.01); H01M 4/5825 (2013.01); H01M 10/0525 (2013.01); H01M 10/0563 (2013.01); H01M 10/4235 (2013.01);
Abstract
The lithium-ion secondary battery includes a positive electrode containing an active material made of a compound including lithium and a transition metal; an electrolyte containing 5 to 30 ppm of hydrofluoric acid; and a negative electrode containing 1 to 100 ppm of vanadium.