Patent ID: 6777132
Filing Date: 2004-08-17
Classification: C01B,H01M,Y02E

Abstract:
An electrode active material represented by the general formula:AaMb(PO4)3âˆ’x(SiO4)xZd, wherein,(a) A is selected from the group consisting of Li, Na, K, and mixtures thereof, and 0(b) M comprises one or more metals, wherein at least one of the one or more metals is capable of undergoing oxidation to a higher valence state, and 1&lE;b&lE;3; (c) 0(d) Z is selected from the group consisting of a hydroxyl, a halogen, and mixtures thereof, and 0 6; wherein A, M, Z, a, b, x and d are selected so as to maintain electroneutrality of the electrode active material.