| http://www.w3.org/ns/prov#value | - Electrode active materials comprising lithium or other alkali metals, a transition metal, and a phosphate or similar moiety, of the formula: Aa+xMbP1???xSixO4 wherein (a) A is selected from the group consisting of Li, Na, K, and mixtures thereof, and 0<a<1.0 and 0???x???1; (b) M comprises one or more metals, comprising at least one metal which is capable of undergoing oxidation to a higher valence
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