Sumitomo Metal Mining Company, Ltd.

Kenji Tashiro

Kentaro Sogabe

Masanori Takagi

A positive electrode active material precursor for a non-aqueous electrolyte secondary battery, including a nickel composite hydroxide particle, is provided, wherein a cross section of the nickel composite hydroxide particle includes a void, a ratio of an area of the void to the cross section of the nickel composite hydroxide particle is less than or equal to 5.0%, a circular region having a radius of 1.78 μm is set at a position where a ratio of an area of the void to the circular region is maximum, on the cross section of the nickel composite hydroxide particle, and the ratio of the area of the void to the circular region is less than or equal to 20%.

Positive electrode active material precursor for non-aqueous electrolyte secondary battery, and method of manufacturing positive electrode active material precursor for non-aqueous electrolyte secondary battery

A positive electrode active material precursor for a non-aqueous electrolyte secondary battery, including-nickel composite hydroxide particles, is provided, wherein a cross section of each nickel composite hydroxide particle includes voids, and an average value of a ratio of an area of the voids in an area of each of the plurality of regions partitioned by predetermined boundary lines, is greater than or equal to 0.5% and less than or equal to 5.0%, and a standard deviation of the ratio of the area of the voids in the area of each of the plurality of regions partitioned by the predetermined boundary lines, is less than or equal to 1.0.

Positive electrode active material precursor for non-aqueous electrolyte secondary battery

There is provided a cathode active material precursor for a non-aqueous electrolyte secondary battery that is a complex metal hydroxide with a flow factor of 10 or greater to 20 or smaller.

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Niihama, Japan

Kenji Tashiro