US Patent Issued to SUMITOMO METAL MINING on Feb. 17 for "Positive electrode active material for lithium ion secondary battery, method for producing the same, and lithium ion secondary battery" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,555,786, issued on Feb. 17, was assigned to SUMITOMO METAL MINING Co. LTD. (Tokyo).

"Positive electrode active material for lithium ion secondary battery, method for producing the same, and lithium ion secondary battery" was invented by Yuki Koshika (Niihama, Japan) and Haruki Kaneda (Niihama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A positive electrode active material for a lithium ion secondary battery, in which the lithium-nickel-manganese composite oxide has a hexagonal layered structure, a mole number ratio of elements is represented as Li:Ni:Mn:M:Ti=a:(1-x-y-z):x:y:z, provided that 0.97less than equal toaless than equal to1.25, 0.035l...