| abstract |
(A) General formula A a M b (XY 4 ) c Z d A first electrode comprising: (Where: (i) A is an alkali metal, 0 <a ≦ 9; (ii) M is a transition metal, 1 ≦ b ≦ 3; (iii) XY 4 is X′O 4−x Y ' x , X'O 4 -y Y' 2y , X "S 4 and combinations thereof, where X 'is P, As, Sb, Si, Ge, V, S and combinations thereof X ″ is selected from the group consisting of P, As, Sb, Si, Ge, V and combinations thereof; Y ′ is selected from the group consisting of halogen, S, N and combinations thereof 0 ≦ x <3, 0 <y ≦ 2 and 0 <c ≦ 3; (iv) Z is OH, halogen or a combination thereof, and 0 ≦ d ≦ 6) (B) a second electrode which is a counter electrode of the first electrode; (C) electrolyte; Including lithium battery. Preferably, M additionally contains a non-transition metal element. Preferred embodiments include those having an olivine structure when c = 1 and a NASICON structure when c = 3. |