Preparation method of spherical nickel-cobalt-aluminum hydroxide precursor

The invention provides a preparation method of a spherical nickel-cobalt-aluminum hydroxide precursor. The spherical nickel-cobalt-aluminum hydroxide precursor is prepared with poly aluminium chloride as an aluminum source. The preparation method is simple in process, low in cost and suitable for large-scale industrial production. The prepared spherical nickel-cobalt-aluminum hydroxide precursor is good in sphericity, high in tap density and uniform in distribution of aluminum element.