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:
Jul. 17, 2007
Filed:
Jun. 10, 2002
Gunther Hambitzer, Pfinztal, DE;
Christiane Ripp, Pfinztal, DE;
Ingo Stassen, Dresden, DE;
Laurent Zinck, Mothern, FR;
Franziska Jager, Pfinztal, DE;
Gunther Hambitzer, Pfinztal, DE;
Christiane Ripp, Pfinztal, DE;
Ingo Stassen, Dresden, DE;
Laurent Zinck, Mothern, FR;
Franziska Jager, Pfinztal, DE;
Other;
Abstract
Rechargeable battery cell operable at normal temperature, with an SO.sub.based electrolyte system, a negative electrode and a positive electrode, wherein one of the electrodes has an electronically conductive discharge element. An improved cycle stability and consequently a longer useful lifetime is achieved in that, as a reaction protection material to protect the discharge element against unwanted reactions with constituents of the SO.sub.based electrolyte system, at least a surface layer of the electronically conductive discharge element contains an alloy of chrome with another metal and/or a protective metal, selected from rhodium, tungsten, rhenium, tantalum, platinum, iridium, osmium or technetium in pure form, as an alloy or as a constituent of a compound and/or a carbide, nitride or phosphide of titanium, nickel, cobalt, molybdenum, iron, vanadium, zirconium or manganese.