The present invention relates to novel electrode active materials represented
by the general formula AaMb(XY4)cZd, wherein:
- (a) A is one or more alkali metals, and 0a8;
- (b) M is at least one metal capable of undergoing oxidation to a higher
valence state, and 1b3;
- (c) XY4 is selected from the group consisting of XO4-xYx,
XO4-yY2y, X"S4, and a mixture
thereof, where X is P, As, Sb, Si, Ge, S, and mixtures thereof; X" is P,
As, Sb, Si, Ge, and mixtures thereof, Y is halogen, 0x3,
0y4, and 0c3; and
- (d) Z is OH, a halogen, mixtures thereof, and 0d6.
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