| 摘要 |
The present invention relates to novel electrode active materials represented by the general formula A<SUB>a</SUB>M<SUB>b</SUB>(XY<SUB>4</SUB>)<SUB>2</SUB>Z<SUB>d</SUB>, wherein: (a) A is one or more alkali metals, and 0<a<=8; (b) M is at least one metal capable of undergoing oxidation to a higher valence state, and 1<=b<=3; (C) XY<SUB>4 </SUB>is selected from the group consisting of X'O<SUB>4-x</SUB>Y'<SUB>x</SUB>, X'O<SUB>4-y</SUB>Y'<SUB>2-y</SUB>, X''S<SUB>4</SUB>, 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, 0<=x<3, 0<y<4, and 0<c<=3; and (d) Z is OH, a halogen, or mixtures thereof, and 0<d<=6.
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