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. 22, 2023
Filed:
Aug. 28, 2020
Fujifilm Wako Pure Chemical Corporation, Osaka, JP;
Kaho Mori, Kawagoe, JP;
Tomoyuki Mori, Kawagoe, JP;
Kazuki Takimoto, Kawagoe, JP;
Masahiro Takano, Kawagoe, JP;
Kei Kawano, Kawagoe, JP;
FUJIFILM WAKO PURE CHEMICAL CORPORATION, Osaka, JP;
Abstract
An object of the present invention is to provide a binder which exhibits excellent dispersibility of a conductive assistant; a slurry composition and an electrode, each of which uses this binder; and an electricity storage device which is provided with this electrode. The present invention relates to a binder for an electricity storage device, in which a loss tangent tan δ in a linear region of an aqueous dispersion liquid of 0.5% by mass of the binder and 4.6% by mass of a conductive assistant satisfies tan δ>1 in a strain dispersion measurement under measurement conditions of a measurement temperature of 25° C. and a frequency of 1 Hz, and the conductive assistant is an acetylene black having an average particle diameter of 30 nm or more and 40 nm or less and a specific surface area of 65 m/g or more and 70 m/g or less; a slurry composition and an electrode, each of which uses this binder; an electricity storage device which is provided with this electrode; and the like.