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:
Nov. 27, 2018
Filed:
Dec. 04, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Hideyuki Saka, Toyota, JP;
Keiichi Takahashi, Nishinomiya, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi, JP;
Abstract
Provided is a non-aqueous electrolyte secondary battery combining high battery performance in normal use and endurance against overcharge. The non-aqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode comprises a positive electrode active material. Positive electrode active materialis formed of a particulate lithium composite oxidecomprising at least lithium, nickel, cobalt, manganese and tungsten; and a nickel oxide layerformed on the lithium composite oxide surface. With the non-lithium metals in lithium composite oxidebeing 100% by mole, tungsten accounts for 0.05% by mole or greater, but 2% by mole or less. With lithium composite oxidebeing 100 parts by mass, the nickel oxide content is 0.01 part by mass or greater, but 2 parts by mass or less.