The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 2017
Filed:
Dec. 09, 2014
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Katsuya Kase, Niihama, JP;
Syuhei Oda, Niihama, JP;
Ryuichi Kuzuo, Niihama, JP;
Yutaka Oyama, Aichi, JP;
SUMITOMO METAL MINING CO., LTD, Tokyo, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi, JP;
Abstract
Provided is a cathode active material for a non-aqueous electrolyte secondary battery capable of obtaining high initial discharge capacity and good output characteristics at low temperature. In order to achieve this, a cathode active material that is a lithium nickel composite oxide composed of secondary particles that are an aggregate of primary particles is expressed by the general expression: Li(NiCoAl)MO(where 0.98≦w≦1.10, 0.05≦x≦0.3, 0.01≦y≦0.1, 0≦z≦0.05, and M is at least one metal element selected from a group consisting of Mg, Fe, Cu, Zn and Ga), and where the crystallite diameter at (003) plane of that lithium nickel composite oxide that is found by X-ray diffraction and the Scherrer equation is within the range of 1200 Å to 1600 Å is used as the cathode material.