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. 18, 2010
Filed:
Aug. 03, 2005
Hans-georg Degen, Mannheim, DE;
Klaus Ebel, Lampertheim, DE;
Andree Schwake, Heidenheim, DE;
Kristin Tiefensee, Bad Dürkheim/Leistadt, DE;
Hans-Georg Degen, Mannheim, DE;
Klaus Ebel, Lampertheim, DE;
Andree Schwake, Heidenheim, DE;
Kristin Tiefensee, Bad Dürkheim/Leistadt, DE;
BASF Aktiengesellschaft, , DE;
Abstract
An electrolyte solution proposed for double layer capacitors contains at least one conducting salt comprising a cation having a maximum diameter<9.20 Á which additionally comprises substituents on the central atom which are not all the same and further contains at least one solvent comprising a functional group selected from lactones and nitrites. Such electrolyte solutions are superior to conventional electrolyte solutions at low temperatures when acetonitrile is the solvent, so that double layer capacitors provided with electrolyte solutions according to the invention have improved electrical properties at low temperatures.