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:
Oct. 26, 2004
Filed:
Oct. 11, 2002
Grant M. Ehrlich, Stonington, CT (US);
Yardney Technical Products, Inc., Pawcatuck, CT (US);
Abstract
A negative electrode material is provided for a rechargeable lithium-ion electrochemical cell comprising an intimate mixture of finely-divided elemental nickel and tin particles characterized in that the total oxygen content of said material is less than about 6 percent by weight of the mixture. Preferably, the negative electrode material comprises from about 5 to 90 percent by weight nickel particles and from about 10 to 95 percent by weight tin particles, the nickel and tin particles being composed of discrete, non-spherical, smooth particles of a size ranging from about 1 to 10 micrometers and having a density which is greater than about 5 grams per milliter and a specific surface area of less than about 1 square meter per gram.