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. 09, 2006
Filed:
Apr. 03, 2003
Jeremy Barker, Shepton-Under-Wychwood, GB;
M. Yazid Saidi, Henderson, NV (US);
Tracy E. Kelley, Tuscon, AZ (US);
Jeremy Barker, Shepton-Under-Wychwood, GB;
M. Yazid Saidi, Henderson, NV (US);
Tracy E. Kelley, Tuscon, AZ (US);
Valence Technology, Inc., Las Vegas, NV (US);
Abstract
Electrode active materials comprising two or more groups of particles having differing chemical compositions, wherein each group of particles comprises a material selected from: (a) materials of the formula AM(XY)Z; and (b) materials of the formula AMO; and wherein (i) A, A, and Aare Li, Na, or K; (ii) Mand Mcomprise a transition metal; (iv) XYa phosphate or similar moiety; and (v) Z is OH, or halogen. In a preferred embodiment, AMOis AMnOhaving an inner and an outer region, wherein the inner region comprises a cubic spinel manganese oxide, and the outer region comprises a manganese oxide enriched in Mnrelative to the inner region. In a preferred embodiment, the compositions also comprise a basic compound.