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:
Apr. 26, 2022
Filed:
May. 22, 2018
Applicant:
Namics Corporation, Niigata, JP;
Inventor:
Takayuki Fujita, Niigata, JP;
Assignee:
NAMICS CORPORATION, Niigata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 10/0569 (2010.01); H01M 4/38 (2006.01); H01M 4/42 (2006.01); H01M 4/505 (2010.01); H01M 10/0567 (2010.01); H01M 10/42 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0569 (2013.01); H01M 4/387 (2013.01); H01M 4/42 (2013.01); H01M 4/505 (2013.01); H01M 10/0567 (2013.01); H01M 2010/4271 (2013.01);
Abstract
A secondary battery having high electromotive force and including less lead or being free of lead is provided. The secondary battery includes a positive electrode including a positive electrode active material containing manganese oxide, a negative electrode including a negative electrode active material containing at least one selected from zinc, gallium, and tin, and an electrolytic solution containing at least one selected from phosphoric acid and organic oxoacid and having a pH of less than 7 at 25° C. This secondary battery has an open circuit voltage of more than 1.6 V in a fully charged state.