Titanium dioxide powder as lithium ion secondary battery electrode active material production raw material, lithium titanate as lithium ion secondary battery electrode active material, and method for producing the same

摘要

PROBLEM TO BE SOLVED: To provide a lithium titanate ion secondary battery electrode active material, manufacturing method thereof, and material for manufacturing thereof, whose charge/discharge capacity is higher, with high coulomb efficiency, being excellent in cycle life. SOLUTION: A titanium oxide powder whose primary particle size is 1.0 m or less while rutilating coefficient is 15-100% is mixed with lithium compound, which is baked to collect a lithium titanate whose primary particle size is 1.0 m or less, thus providing a lithium titanate as a lithium ion secondary battery electrode active material.