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:
Feb. 29, 2000
Filed:
Mar. 27, 1998
NEC Corporation, Tokyo, JP;
Abstract
An aqueous electric double layer capacitor having excellent wettability with aqueous electrolytic solution, low internal resistance, excellent easiness of forming uniform, thin and wide films and mechanical strength. Activated carbon powder, a polymeric binder having a hydrophilic group and a plasticizer are fully mixed to form a film which is then dried to form an electrode. By using a polymer having a hydrophilic group as a binder, wettability between an aqueous electrolytic solution and the electrode is improved and contact resistance between an electrolysis solution and the electrode can be reduced. In addition, by adding a plasticizer, the amount of polymer binder required to form a thin type electrode can be reduced, thus providing an aqueous solution electric double layer capacitor with low internal resistance.