Abstract:
A positive electrode active material includes a conductive matrix and a lithium metal compound of a polyanion structure provided on the surface of the conductive matrix. The lithium metal compound is expressed as LiαM0βXηO4-γZγ, in which: M0 is one or more selected from Mn, Co, Ni, Fe, Cu, Cr, Mg, Ca, Zn, and Ti; X is one or more selected from P, As, Si, Mo, and Ge; Z is one or more selected from Al, Mg, Ca, Zn, and Ti, being optionally includable; α satisfies 0≦α≦2.0; β satisfies 0≦β≦1.5; η satisfies 1≦η≦1.5; and γ satisfies 0≦γ≦1.5.
Abstract:
A cathode active material for a nonaqueous electrolyte secondary battery includes a core part and a shell part arranged to a surface of the core part. The core part includes an inorganic oxide having a polyanion structure. The inorganic oxide is LixMnyM1-yXO4, in which M is at least one of Co, Ni, Fe, Cu, Cr, Mg, Ca, Zn, and Ti, X is at least one of P, As, Si, and Mo, and 0≦x