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. 04, 2007
Filed:
May. 16, 2006
Kiyonori Hinoki, Tokyo, JP;
Tsuyoshi Ichiki, Tokyo, JP;
Kazutoshi Emoto, Tokyo, JP;
Takehiko Sasaki, Tokyo, JP;
Kenichi Murakami, Wako, JP;
Shigeki Oyama, Wako, JP;
Manabu Iwaida, Wako, JP;
Kiyonori Hinoki, Tokyo, JP;
Tsuyoshi Ichiki, Tokyo, JP;
Kazutoshi Emoto, Tokyo, JP;
Takehiko Sasaki, Tokyo, JP;
Kenichi Murakami, Wako, JP;
Shigeki Oyama, Wako, JP;
Manabu Iwaida, Wako, JP;
Abstract
A method is provided for optimizing the physical characteristics of a coating solution for a polarizable electrode layer formed on a collector. A first step is carried out to prepare a coating solution that includes porous particles, a fluorine-based binder, a good solvent that dissolves said fluorine-based binder, and a poor solvent that does not dissolve said fluorine-based binder. A second step is carried out to coat a collector with said coating solution to form the polarizable electrode layer on the collector. The viscosity of said coating solution for the polarizable electrode layer is set to between 0.5 to 3.5 Pa·s and a weight ratio (GS/PS) of said good solvent (GS) and said poor solvent (PS) is set to between 60/40 to 80/20. The occurrence of cracks in the polarizable electrode layer and large nonuniformities in the thickness of the polarizable electrode layer can thus be prevented.