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:
Mar. 25, 2008
Filed:
Aug. 23, 2004
Sergei Vladimirovich Ivanov, Schnecksville, PA (US);
William Jack Casteel, Jr., Emmaus, PA (US);
Guido Peter Pez, Allentown, PA (US);
Michael Ulman, Alburtis, PA (US);
Sergei Vladimirovich Ivanov, Schnecksville, PA (US);
William Jack Casteel, Jr., Emmaus, PA (US);
Guido Peter Pez, Allentown, PA (US);
Michael Ulman, Alburtis, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
The present invention relates to an improvement in lithium secondary batteries comprised of a negative electrode, a positive electrode, a separator, and a lithium-based electrolyte carried in an aprotic solvent and to the electrolyte compositions. The improvement resides in the use of a lithium salt of the formula:LiBFZwherein x greater than or equal to 4 and Z represents H, Cl, and Br.