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. 13, 2012
Filed:
Apr. 05, 2007
Hong Gan, Williamsville, NY (US);
Joseph Lehnes, Williamsville, NY (US);
Robert S. Rubino, Williamsville, NY (US);
Esther S. Takeuchi, East Amherst, NY (US);
Hong Gan, Williamsville, NY (US);
Joseph Lehnes, Williamsville, NY (US);
Robert S. Rubino, Williamsville, NY (US);
Esther S. Takeuchi, East Amherst, NY (US);
Greatbatch Ltd., Clarence, NY (US);
Abstract
An electrochemical cell comprising a lithium anode, a cathode comprising a blank cut from a free-standing sheet of a silver vanadium oxide mixture contacted to a current collector. The active material has having a relatively lower surface area and an electrolyte activating the anode and the cathode is described. By optimizing the cathode active material surface area in a SVO-containing cell, the magnitude of the passivating film growth at the solid-electrolyte interphase (SEI) and its relative impermeability to lithium ion diffusion is reduced. Therefore, by using a cathode of an active material in a range of from about 0.2 m/gram to about 2.6 m/gram, and preferably from about 1.6 m/gram to about 2.4 m/gram, it is possible to eliminate or significantly reduce undesirable irreversible Rdc growth and voltage delay in the cell and to extend its useful life in an implantable medical device.