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:
Jun. 26, 2007
Filed:
Dec. 21, 2001
Toshihiro Zushi, Itami, JP;
Seiji Okada, Itami, JP;
Itaru Gosho, Itami, JP;
Shogo Tanno, Itami, JP;
Mitsuhiro Marumoto, Itami, JP;
Toshihiro Zushi, Itami, JP;
Seiji Okada, Itami, JP;
Itaru Gosho, Itami, JP;
Shogo Tanno, Itami, JP;
Mitsuhiro Marumoto, Itami, JP;
Mitsubishi Cable Industries, Ltd., Tokyo, JP;
Abstract
A porous element containing a fluoropolymer comprising vinylidene fluoride as a main unit and having a density of 0.55–1.30 g/cmand a Gurley value of not more than 150 sec/100 cc is used as a polymer substrate of a solid electrolyte to be placed between a positive electrode and a negative electrode. As a result, the solid electrolyte layer shows fine ion conductivity and an ion polymer secondary battery having strikingly improved low temperature characteristics, cycle characteristics and high-rate discharge characteristics as compared to conventional batteries can be obtained.