US Patent 7682746 Negative electrode for non-aqueous secondary battery

Negative electrodes and non-aqueous secondary batteries that comprise the negative electrodes are disclosed. The electrode comprises a current collector; and a mixture on the current collector, the mixture comprising a negative electrode active material, a conductive material, and a binder. The active material has the overall composition: AM1qM21-qOy; in which (1) A is LiX or LiX-rGr, in which G is selected from Na, K, Cs, Be, Mg, Ca, Sr, Ba, and mixtures thereof, in which G and M1 are different; (2) 0≦x≦3; 0<y≦3; 0≦q≦1; and 0≦r≦3; and (3) either M1 is selected from Sn, Mg, and mixtures thereof, and M2 is selected from V, Ti, Nb, Mn, Cr, Sb, Mo, Zr, W, and mixtures thereof; or M1 is selected from Y, Co, and mixtures of two or more of Y, Co, Sn, and Mg, and M2 is selected from Ti, Nb, Mn, Cr, Sb, Mo, Zr, W, and mixtures thereof.