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:
Dec. 20, 2011
Filed:
Jun. 27, 2007
Hidekatsu Izumi, Osaka, JP;
Susumu Kato, Osaka, JP;
Kenji Yamamoto, Osaka, JP;
Shinichi Sumiyama, Osaka, JP;
Hirofumi Iwaki, Osaka, JP;
Hidekatsu Izumi, Osaka, JP;
Susumu Kato, Osaka, JP;
Kenji Yamamoto, Osaka, JP;
Shinichi Sumiyama, Osaka, JP;
Hirofumi Iwaki, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An alkaline dry battery of this invention includes: a positive electrode including at least one of a manganese dioxide powder and a nickel oxyhydroxide powder; a negative electrode including a zinc alloy powder; a separator interposed between the positive electrode and the negative electrode; an alkaline electrolyte; and a battery case for housing the positive electrode, negative electrode, the separator, and the alkaline electrolyte. The negative electrode further includes a surfactant that adsorbs to a surface of the zinc alloy powder during a non-discharge period and promptly desorbs from the surface of the zinc alloy powder upon start of discharge without impeding ion transfer in the alkaline electrolyte.