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:
May. 16, 2017
Filed:
Aug. 02, 2012
Hiroki Nagai, Nagoya, JP;
Yutaka Oyama, Toyota, JP;
Hiroki Nagai, Nagoya, JP;
Yutaka Oyama, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Abstract
The lithium rechargeable battery of the present invention is provided with a current collector and an active material layer containing active material particlessupported on this current collector. The active material particlesare secondary particlesin which a plurality of primary particlesof a lithium transition metal oxide are aggregated, and have a hollow structure that contains a hollow sectionformed inside the secondary particleand a shell sectionthat surrounds the hollow section. A through holethat penetrates from the outside to the hollow sectionis formed in the secondary particle. The ratio (A/B) in a powder x-ray diffraction pattern of the active material particles, where A is the full width at half maximum of the diffraction peak obtained for the (003) plane and B is the full width at half maximum of the diffraction peak obtained for the (104) plane, satisfies the equation (A/B)≦