Nickel-titanium-phosphate cathodes

An electrochemical device comprising:

• LixA0.5-yA′yB1-zB′zC1-wC′wO5-tD′t wherein A consists essentially of a metal transition ion, A′ is an alkaline ion or a metal transition ion, B is selected from the group consisting of Ti, Zr, Cr, V, Sn,Ge,Pb,Si, Mo, Hf and any other tetravalent ions, B′ is one or more suitable monovalent, divalent, trivalent, tetravalent, heptavalent or hexavalent ions, C is selected from the group consisting of P, As, Sb, V, Nb, Ta, Bi, and W, C′ is one or more suitable monovalent, divalent, trivalent, tetravalent, heptavalent or hexavalent ions, D′ is selected from the group consisting of F and S;
• and wherein 0≦x≦3, 0≦y≦0.5, 0≦z≦1, 0≦w≦1, 0≦t≦1;
• a negative electrode;
• and
• a non aqueous electrolyte.

A electrochemical device comprising:

• a positive active material comprising LixA0.5-yA′yB1-zB′zC1-wC′wO5-tD′t;
• wherein A is a metal transition ion, A′ is an alkaline ion or a metal transition ion, B is selected from the group consisting of Ti, Zr, Cr, V, Sn, Ge, Pb, Si, Mo, Hf and any other tetravalent ions, B′ is one or more suitable monovalent, divalent, trivalent, tetravalent, heptavalent or hexavalent ions, C is selected from the group consisting of P, As, Sb, V, Nb, Ta, Bi, and W, C′ is one or more suitable monovalent, divalent, trivalent, tetravalent, heptavalent or hexavalent ions, D′ is selected from the group consisting of F and S;
• and wherein 0≦x≦3, 0≦y≦0.5, 0≦z≦1, 0≦w≦1, 0≦t≦1;
• a negative electrode;
• and
• a non aqueous electrolyte.