POSITIVE ELECTRODE ACTIVE MATERIAL PRECURSOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL PRECURSOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

To provide a positive electrode active material precursor for a nonaqueous electrolyte secondary battery, capable of forming a positive electrode active material for a nonaqueous electrolyte secondary battery containing porous particles.SOLUTION: A positive electrode active material precursor for a nonaqueous electrolyte secondary battery includes a nickel-cobalt-manganese carbonate composite having a mass ratio of Ni:Mn:Co:M=x:y:z:t (where x+y+z+t=1, 0.5≤x1.0, 0y≤0.4, 0z≤0.4, and 0≤t≤0.1 are satisfied, and M represents one or more additive elements selected from among Mg, Al, Ca, Ti, V, Cr, Fe, Cu, Zn, Zr, Nb, Mo, and W.), and a functional group containing hydrogen, H/Me of a mass ratio of contained hydrogen H and a contained metal composition Me being 1.60 or more.SELECTED DRAWING: Figure 1