| abstract |
A new material that can be an active material is provided. The general formula of the layered rock salt structure is: Li a Ni b Co c Mn d De O f (0.2 ≦ a ≦ 2, b + c + d + e = 1, 0 ≦ e <1, D is W, Mo, Re, Pd, Ba, Cr, B, Sb, Sr, Pb, Ga, Al, Nb, Mg, Ta, Ti, La, Zr, Cu, Ca, Ir, Hf, Rh, Zr, Fe, Ge, Zn, Ru, A lithium composite metal oxide portion represented by at least one element selected from Sc, Sn, In, Y, Bi, S, Si, Na, K, P, and V, 1.7 ≦ f ≦ 3); An intermediate part containing Zr and / or Al on the surface of the lithium composite metal oxide part, A material having a conductive oxide portion on a surface of the intermediate portion. [Selection] Figure 2 |