Patent ID: 7008726

Claim:
A battery, comprising: (A) a first electrode comprising a compound represented by the nominal general formula: A a [M m ,MI n ,MII o ](XY 4 ) d Z e , wherein: (i) A is selected from the group consisting of elements from Group I of the Periodic Table, and mixtures thereof, and 0<a≦9; (ii) at least one of M, MI and MII is a redox active element, 0<m, n, o≦4, and ½[V(MI)+V(MII)]=V(M), wherein V(M) is the valence state of M, V(MI) is the valence state of MI, and V(MII) is the valence state of MII, and wherein MI is selected from the group consisting of Li 1+ , K 1+ , Na 1+ , Ru 1+ , Cs 1+ , and mixtures thereof; (iii) XY 4 is selected from the group consisting of X′[O 4-x, Y′ x ], X′[O 4-y, Y′ 2y ], X″S 4 , [X z ′″,X′ 1-z ]O 4 , and mixtures thereof, wherein: (a) X′ and X′″ are each independently selected from the group consisting of P, As, Sb, Si, Ge, V, S, and mixtures thereof; (b) X″ is selected from the group consisting of P, As, Sb, Si, Ge, V, and mixtures thereof; (c) Y′ is selected from the group consisting of a halogen, S, N, and mixtures thereof; and (d) 0≦x≦3, 0≦y≦2, 0≦z≦1, and 1≦d≦3; and (iv) Z is selected from the group consisting of a hydroxyl (OH), a halogen, and mixtures thereof, and 0≦e≦4; wherein A, M, MI, MII X, Y, Z, a, m, n, o, d, and e are selected so as to maintain electroneutrality of the compound; (B) the battery further comprising a second electrode; and (C) an electrolyte.