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:
Aug. 07, 2018
Filed:
Oct. 25, 2013
Wako Pure Chemical Industries, Ltd., Osaka-shi, Osaka, JP;
Tokyo University of Science Foundation, Tokyo, JP;
Shinichi Komaba, Tokyo, JP;
Naoaki Yabuuchi, Tokyo, JP;
Zhen-Ji Han, Tokyo, JP;
Takeo Sasaki, Tokyo, JP;
Shota Hashimoto, Tokyo, JP;
Kuniaki Okamoto, Kawagoe, JP;
Tsuneaki Maesawa, Kawagoe, JP;
TOKYO UNIVERSITY OF SCIENCE FOUNDATION, Tokyo, JP;
WAKO PURE CHEMICAL INDUSTRIES, LTD., Osaka-shi, JP;
Abstract
It is an object of the present invention to provide an electrode capable of maintaining superior capacity retention without destruction of an electrode structure, even in the case of using an active material including silicon. The present invention relates to 'a binder for a lithium cell, the binder comprising polyacrylic acid cross-liked by a cross-linking agent selected from the compounds described in the general formulae [1] to [13] and the polymer described in the general formula [14] (provided that the one which includes a functional group-containing vinylidene fluoride-based polymer is excluded)'; a 'composition for producing an electrode of a lithium cell, the composition comprising 1) an active material containing silicon, 2) a conductive assistant and 3) a cross-linked-type polyacrylic acid (provided that the one containing a functional group-containing vinylidene fluoride-based polymer is excluded)'; and an “electrode for a lithium cell, the electrode comprising 1) an active material containing silicon, 2) a conductive assistant, 3) a cross-linked-type polyacrylic acid, and 4) a current collector (provided that the one containing a functional group-containing vinylidene fluoride-based polymer is excluded)”.