Patent ID: 8247113

Claim:
An electrode of an electrochemical device, comprising a material resulting from the reduction of a material chosen from those of formulae (I) M 1 x1 M 2 x2 (Ti (1−y−) M 3 y M 4 z )O (3−δ) (I) wherein M 1 represents an atom or a mixture of atoms chosen from alkaline-earth metals; M 2 represents La; M 3 represents an atom or a mixture of atoms chosen from the group of metals consisting of Ni, Co, Cu; M 4 represents an atom or a mixture of atoms chosen from: (i) metals from the first transition series, of atomic number from 21 to 30, apart from Ni, Co, Cu; (ii) the following poor metals: Al, Ga, In; and wherein 0.9≦x 1 +x 2 ≦1; 0<x 1 <1; 0<x 2 <1; 0.25≦y≦0.75; 0≦z<1; 0≦δ≦0.5; and (II) (M 1 x1 M 2 x2 )(Ti (1−y−) M 3 y M 4 z ) m O 3m+1−δ (II) wherein M 1 represents an atom or a mixture of atoms chosen from alkaline-earth metals; M 2 represents La; M 3 represents an atom or a mixture of atoms chosen from the group of metals consisting of Ni, Co, Cu; M 4 represents an atom or a mixture of atoms chosen from: (i) metals from the first transition series, of atomic number from 21 to 30, apart from Ni, Co, Cu; (ii) the following poor metals: Al, Ga, In; and wherein 0.9≦x 1 +x 2 ≦1; 0<x 1 <1; 0<x 2 <1; 0.25≦y≦0.75; 0≦z<1; 0≦δ≦0.5; m is an integer greater than or equal to 1.