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:
May. 31, 2016
Filed:
Nov. 08, 2012
Nec Energy Devices, Ltd., Sagamihara-shi, Kanagawa, JP;
Yuka Chikugo, Kanagawa, JP;
Hitoshi Ishikawa, Kanagawa, JP;
Yasutaka Kono, Kanagawa, JP;
Ippei Waki, Kanagawa, JP;
Koh Ishiguchi, Kanagawa, JP;
NEC ENERGY DEVICES, LTD., Kanagawa, JP;
Abstract
A lithium ion secondary battery electrode according to the present invention includes (A) a non-fluorinated polymer; (B) an active material; (C) a thickener; and (D) a conductive auxiliary agent. An elution ratio of (A) the non-fluorinated polymer in an electrolytic solution solvent at 60° C. is equal to or less than 1.0 mass %, and a swelling ratio of (A) the non-fluorinated polymer in the electrolytic solution solvent at 60° C. is equal to or more than 10 mass % and equal to or less than 50 mass %.