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:
Nov. 10, 2009
Filed:
Nov. 14, 2005
Nobuharu Koshiba, Ikoma-gun, JP;
Youko Sano, Neyagawa, JP;
Shinichi Kawaguchi, Kishiwada, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An organic electrolyte battery of this invention includes: a positive electrode comprising a positive electrode active material; a negative electrode comprising a negative electrode active material; an organic electrolyte comprising at least an organic solvent and a solute dissolved in the organic solvent; and an additive that suppresses an increase in internal resistance. The additive includes at least one of phthalazone and a phthalazone derivative. The addition of the additive to the battery suppresses an increase in internal resistance upon storage and upon charge/discharge cycling, thereby making it possible to improve the storage characteristics and charge/discharge cycle characteristic of the battery.